Level 1 flows of the US market infrastructure: the key exchanges, clearing houses, depositories and payment systems, one diagram per service, grouped by the institution that runs them (ICE with NYSE, Nasdaq, Cboe, CME Group, OCC, the swap and bond venues, DTCC, Fedwire with CHIPS and the retail rails, CLS). Each diagram follows an illustrative trade or payment through the service’s own cycle with the infrastructure at the center in purple, its members on one side, the clients behind them, the infrastructures it hands off to on the other, and the overseer; the strip above it is the profile (owner, what it handles, members, links, overseer, the clock). Columns are the parties, rows the phases; numbered steps are messages, deliveries, payments or reports between them, with the channel or system in the pill. Hover a step for the detail, click it or use the walkthrough to be taken through the diagram step by step. The institutions are the subject; the products they handle are on the sell-side, buy-side and other pages of this set, and the foreign bank pages show the same infrastructures from the user’s side. US market conventions and USD throughout; all numbers illustrative. New to this? Begin with Start here.
Institution
Product
ICE and NYSE
Nasdaq
Cboe
CME Group
OCC
The Swap and Bond Venues
DTCC
Fedwire, CHIPS and the Retail Rails
CLS
How the diagrams work, the chain every service is a link of, a map of the services by institution, who owns and oversees each, and a glossary.
Intercontinental Exchange, the listed group that owns the New York Stock Exchange, the ICE futures exchanges and clearing houses, the CDS clearing house and a data business: three services on this page, each with its own mechanics. The NYSE equities day with its two auctions and a human DMM under Regulation NMS; ICE Futures US with ICE Clear US as a vertical silo for the softs and the dollar index, from the match to the warehouse delivery; and ICE Clear Credit, the clearing house of the credit default swap market, where a credit event turns protection into cash at an auction price.
OwnerIntercontinental Exchange, listed in New York; founded in 2000 as an energy platform, NYSE acquired in 2013; exchanges, clearing houses, data and mortgage technology.
What it runsThe NYSE Group’s five equity exchanges and two options exchanges; ICE Futures US and Europe; ICE Clear US, Europe, Credit and Netherlands; ICE Data Services.
How a trade movesAn equity trade matched on the NYSE goes to NSCC and DTC; a futures trade on ICE Futures US clears at ICE Clear US; a CDS executed on a SEF novates at ICE Clear Credit.
Overseen byThe SEC for the securities exchanges and ICE Clear Credit’s single names; the CFTC for the futures exchanges and the clearing houses; the Fed for the SIFMU.
Nasdaq, the first electronic market and the listing exchange of the technology companies, now a listed group with nine US exchanges, the Nordic and Baltic exchanges, a data and index business on the Nasdaq-100 and a technology business selling its matching engine and surveillance to other markets: one service on this page, the Nasdaq market day with its two algorithmic crosses in place of a DMM.
OwnerNasdaq, Inc., listed on its own exchange; the NASD’s quotation system of 1971, an exchange since 2006; OMX acquired in 2008.
What it runsThree US equity exchanges (Nasdaq, BX, PSX), six US options exchanges, the Nordic and Baltic exchanges and their clearing house, the UTP SIP, the indexes.
How a trade movesAn equity trade matched on INET goes to NSCC and DTC; an options trade on PHLX or ISE goes to OCC; the Nordic trades clear at Nasdaq Clearing.
Overseen byThe SEC as a self-regulatory organization for the US exchanges; the Nordic and Baltic authorities for the European markets.
Cboe Global Markets, the Chicago Board Options Exchange of 1973 that invented listed options, merged with the Bats equity exchanges in 2017: two services on this page. The options exchanges with the two proprietary products the market can trade nowhere else (SPX and VIX), the floor that survives for the large orders and OCC behind every contract; and the four equity exchanges with four fee models, competing for the lit flow without a listing franchise, beside the off-exchange market of the wholesalers and the dark pools.
OwnerCboe Global Markets, listed; the CBOE of 1973 and the Bats exchanges of 2005, merged in 2017; Cboe Europe, Cboe Canada, Cboe Australia and Japan beside the US.
What it runsFour US options exchanges, four US equity exchanges, the Cboe Futures Exchange for the VIX futures, Cboe Clear US, the European and Canadian equity venues, the data and the indexes.
How a trade movesAn SPX option matched on Cboe clears at OCC and settles in cash to the opening quotation; an equity trade on BZX goes to NSCC and DTC; a VIX future clears at OCC.
Overseen byThe SEC for the options and equity exchanges; the CFTC for the Cboe Futures Exchange.
CME Group, the four futures exchanges (the Chicago Mercantile Exchange, the Board of Trade, NYMEX and COMEX) on one electronic platform with their own clearing house, the largest derivatives marketplace in the world and the model of the vertical silo: three services on this page. Globex, from the order to the settlement price and the delivery; CME Clearing for the listed contracts, with SPAN 2 and the twice-daily cash cycle; and the cleared swaps service that gives the dollar swap its second price against LCH.
OwnerCME Group, listed; the CME demutualized in 2000, merged with the CBOT in 2007 and bought NYMEX and COMEX in 2008, then NEX (BrokerTec, EBS) in 2018.
What it runsGlobex and the four exchanges, CME Clearing with its listed and OTC services, BrokerTec for Treasuries and EBS for FX, the data business, the CME Term SOFR benchmark.
How a trade movesA futures trade matched on Globex clears at CME Clearing and nowhere else; a swap executed on a SEF can be sent to CME’s clearing service; a Treasury futures delivery settles through Fedwire Securities.
Overseen byThe CFTC for the four designated contract markets and the DCO; the Fed under Title VIII for CME Clearing as a SIFMU.
The Options Clearing Corporation, the single clearing house of the US listed options market since 1973, owned by the exchanges that use it: one service on this page, from the novation of every option matched on any of the sixteen exchanges to the margin on STANS, the random assignment of the exercises and the settlement of the stock through NSCC; the horizontal model the futures market never adopted.
OwnerThe options exchanges (Cboe, Nasdaq, NYSE, MIAX) as a user-owned utility; founded with the CBOE in 1973.
What it runsThe clearing of every US listed equity, index and ETF option, the securities futures and the stock loan programs; the largest equity derivatives clearing house in the world by contracts.
How a trade movesAn option matched on any exchange novates at OCC the same day; an exercise becomes a stock trade at NSCC and DTC or a cash settlement at OCC.
Overseen byThe SEC as a covered clearing agency; the CFTC as a DCO; the Fed under Title VIII as a SIFMU.
The electronic venues of the swap and bond markets, broker-dealers and alternative trading systems rather than exchanges: two services on this page. The swap execution facilities (Tradeweb and Bloomberg for the buy side, the interdealer brokers’ SEFs between the dealers) where the standardized swaps are executed by request for quote, confirmed, reported to the tape and sent to the clearing house within seconds; and the bond platforms (MarketAxess and Tradeweb for credit, BrokerTec for the Treasury order book) that feed FICC, DTC and TRACE.
What they runThe RFQ and order book venues for the swaps, the government bonds and the corporate bonds; the dealer-to-client and the dealer-to-dealer markets; the composite prices.
How a trade movesA swap executed on a SEF goes to LCH or CME and to the swap data repository; a Treasury trade on BrokerTec goes to FICC and Fedwire; a corporate bond trade settles at DTC and is reported to TRACE.
Overseen byThe CFTC for the SEFs under Part 37; the SEC for the security-based SEFs and the bond ATSs; FINRA as the SRO of the platforms.
The Depository Trust and Clearing Corporation, the user-owned utility that clears and settles the US securities market: five services on this page. NSCC, the equity CCP with its continuous net settlement and its clearing fund; DTC, the depository and its settlement day on T+1 with the cash in central bank money at the close; FICC’s Government Securities Division, the Treasury and repo CCP under the 2026 clearing mandate; FICC’s MBS Division, the CCP of the TBA market; and the data and processing services, the swap data repository and the trade matching on CTM.
OwnerThe users (the banks, the broker-dealers, the exchanges) through DTCC, formed in 1999 as the holding company of DTC (1973) and NSCC (1976), with FICC (2003) and the data subsidiaries.
What it runsNSCC, DTC and FICC as the three clearing agencies; DDR as the swap data repository; ITP for the institutional trade matching; the GTR, the LEI role and the Trade Information Warehouse.
How a trade movesAn equity trade is captured and netted at NSCC and settles at DTC on T+1; a Treasury trade nets at FICC and settles on Fedwire Securities; a TBA trade nets by class date; a swap is reported to DDR.
Overseen byThe SEC as covered clearing agencies and SDR; the Fed under Title VIII for the three SIFMUs; the NYDFS for DTC as a trust company; the CFTC for DDR.
The dollar’s payment systems: four services on this page. Fedwire Funds, the Fed’s real-time gross settlement system where every large payment and every FMI’s cash leg ends as a book entry on a master account; Fedwire Securities, the book-entry depository of the Treasuries where the market settles delivery versus payment and the government issues and pays; CHIPS, the banks’ own clearing house netting the cross-border dollars on prefunded balances; and the retail rails, the two instant systems settling in seconds around the clock and the ACH batch that moves the payroll.
OwnerThe Federal Reserve Banks for Fedwire Funds, Fedwire Securities, FedNow and FedACH; The Clearing House (the largest banks) for CHIPS, RTP and EPN; Nacha for the ACH rules.
What they runThe real-time gross settlement of dollars and the book-entry Treasuries in central bank money; the private large-value netting; the instant and the batch retail payments.
How a payment movesA wire settles on the master accounts at once; a Treasury delivers against payment on the same accounts; a cross-border dollar nets through CHIPS and settles at the Fed; an instant payment settles in seconds; a payroll settles in the ACH windows.
Overseen byThe Federal Reserve Board for all of them, as the operator’s own overseer for the Fed’s systems and as the overseer of The Clearing House’s; the Treasury for the book-entry securities; Nacha and the CFPB on the ACH and the consumer side.
CLS, the bank the banks built in 2002 to remove the Herstatt risk of the FX market: one service on this page, the settlement day in which seven trillion dollars of FX trades settle payment versus payment on CLS’s own books across accounts at 18 central banks, in the five-hour window of the European morning when every RTGS system is open, funded by net pay-ins of about one percent of the gross.
OwnerCLS Group Holdings, owned by about 70 settlement member banks; CLS Bank International, an Edge corporation under the Fed, operating since 2002.
What it runsThe payment-versus-payment settlement of FX spot, forwards and swaps in 18 currencies; CLSNet for the bilateral netting of the others; the same-day session; the FX data.
How a trade movesAn FX trade submitted on T is netted into the pay-in schedule, paid in through each currency’s RTGS in the window, settled on CLS’s books both legs at once and paid out the same morning.
Overseen byThe Federal Reserve as the primary supervisor; the CLS Oversight Committee of the 18 central banks; a SIFMU under Title VIII.
How to read a diagram
Columns are the partiesThe investors on the left, then the members (the broker-dealers, FCMs, banks and custodians that hold the membership), the infrastructure itself in the middle in purple (the service the diagram is about), the other participants (the market makers, the other side, the trade sources), the infrastructures it hands off to (the clearing house behind an exchange, the depository and the Fed behind a clearing house) and the overseer on the right.
Rows are the phasesTime runs down the page in the service’s own cycle: the opening auction to the close for an exchange, trade capture to netting to settlement for a clearing house, the night cycle to the end-of-day cash for a depository, the pay-ins to the pay-outs for CLS, the open to the close for an RTGS. The band label gives the timing.
Arrows are stepsNumbered in order. Solid arrows are messages, deliveries or payments; dashed ones are standing flows like reports and oversight; two-headed ones are exchanged or matched. Boxes on the infrastructure’s own lifeline are what it does internally: a novation, a netting run, a settlement batch.
Pills are the channelAmber for voice and chat, blue for electronic platforms and portals, rose for SWIFT messages, grey for infrastructure and regulatory systems (the matching engines, the clearing portals, the Fed’s services, the repositories), teal for market data, lavender for the members’ internal systems. Each pill shows a one-line definition on hover.
The strip is the profileAbove each diagram the worked example strip gives the institution’s profile: who owns it, what it handles with illustrative volumes, who its members are, what it links to, who oversees it, and the clock of its cycle. Hovering a step shows the full detail; clicking it opens the walkthrough.
The grouping is by institutionThe area tabs are the groups that run the services (ICE with NYSE, Nasdaq, Cboe, CME Group, OCC, the venues, DTCC, Fedwire with CHIPS and the retail rails, CLS) and the product tabs under each are the services with their own mechanics; the facts table below lists every service with the same five columns. The flags open the same chain for the other jurisdictions, where the institutions differ.
A flow can be read two ways: scroll the diagram and hover for detail, or press Walk through the steps above any diagram to follow it one step at a time, with the detail in a card. The arrow keys move forward and back.
The chain every diagram is a link of
BankThe infrastructureClientMarket infrastructuremessage or transferstanding flowexchanged and matchedoption, when needed1sequence, on the party that actsVoice, chatElectronic platform, APIInfrastructure system (payment, clearing, reporting)Market dataInternal systemhover an arrow or a badge for the full detail
Every diagram on this page is one link of this chain seen from inside: the venue that matches (an exchange, a SEF, a platform), the clearing house that novates and nets, the depository that settles against the cash, and the Fed where the cash becomes final; the broker-dealer carries the investor through the chain as the member the investor is not, and the regulators read the record at each link. What the US version shows is a market of many venues and one clearing house per asset class for the securities and the options, and of vertical silos for the futures, all settling in the end on the master accounts of the Fed.
The flows, 22 of them
Each card opens its diagram. The tabs at the top do the same; the search box finds a flow by name, rule, report or keyword.
Who owns each service, what it handles, who its members are, what it links to, who oversees it
The same five questions for every service. The answers are what distinguish the US infrastructure: user-owned utilities beside listed groups, one clearing house per asset class for the securities and the options beside the futures silos, and the Fed at the end of every chain as the operator of the dollar’s settlement layer and the overseer of the systemically important utilities.
CLS Group, owned by the member banks; an Edge corporation, a SIFMU
FX settlement in 18 currencies, payment versus payment; USD 7,000,000,000,000 a day
about 70 settlement members; the third parties through them
the accounts at 18 central banks; Fedwire, T2, CHAPS and the other RTGS systems
the Fed; the CLS Oversight Committee
Glossary
The terms that come back on every diagram. Every pill in the diagrams also shows its definition on hover.
Concepts, terms and rules
Self-regulatory organization: An exchange or association (the NYSE, Nasdaq, Cboe, FINRA) registered with the SEC that writes and enforces rules on its members under the SEC’s oversight, with its rule changes filed with the SEC; the exchanges contract most of their member regulation to FINRA.
Regulation NMS: The SEC’s 2005 rules that bind the US equity exchanges into one national market system: the order protection rule against trade-throughs of protected quotes, the access rule with the fee cap, the sub-penny rule and the market data rules; amended in 2024 on the tick sizes, the access fees and the execution quality disclosure.
Order protection rule: NI 23-101’s rule that a marketplace may not execute a trade at a price worse than a better-priced visible order on another protected marketplace; dealers meet it with smart order routers or directed action orders.
Designated market maker: The NYSE member firm assigned a list of stocks with the obligation to quote them, to facilitate the opening and closing auctions and to dampen the imbalances with its own capital; the successor of the specialist, today one of the large electronic market makers.
Opening and closing auctions: The single-price auctions that open and close the equity exchanges’ day: the on-open and on-close orders and the continuous book are matched at the price that maximizes the volume, with the imbalance published in advance; the closing auction sets the official close the funds are valued at and trades the index rebalances.
Maker-taker: The fee model of most US exchanges: a rebate to the order that rests on the book (the maker) and a fee to the order that takes it, within the SEC’s access fee cap; the inverted exchanges do the reverse.
Payment for order flow: Payments a wholesaler or market maker makes to a retail broker for routing its orders; disclosed in Rule 606 reports.
Wholesaler: A market maker that pays retail brokers for their order flow and executes it, usually inside the quoted spread (Citadel Securities, Virtu, Susquehanna and others).
Dark pool: An ATS that matches orders without displaying quotes, used by institutions to trade size with less information leakage.
LULD: Limit up-limit down: the single-stock price bands (5% for the large caps, 10% for the others, doubled at the open and close) outside which a stock pauses for five minutes, the mechanism that replaced the single-stock circuit breakers after the 2010 flash crash.
Market-wide circuit breaker: The halts of every US exchange at a 7%, 13% and 20% decline of the S&P 500 from the previous close (15 minutes for the first two, the rest of the day for the third), triggered in March 2020 four times.
Vertical silo: The US futures model in which the exchange owns the clearing house that clears its contracts and the open interest cannot move to another; the contracts of competing exchanges are not fungible; the opposite of the horizontal model of the equities and the options.
Horizontal clearing: One clearing house serving every venue in an asset class (NSCC for the equities, OCC for the options), so that a position opened on one exchange can be closed on another and the exchanges compete for the order flow alone.
Novation: The legal step by which one trade between two parties becomes two trades with the clearing house in the middle.
Netting: Offsetting all of a firm’s buys and sells of the same thing into one net delivery or payment.
Continuous net settlement: NSCC’s system that nets each member’s trades in each security into one position carried from day to day, with the fails rolled into the next day’s position, removing 98% or more of the gross value from settlement.
Clearing fund: The collateral each NSCC or OCC member posts to the clearing house against its unsettled positions; the first loss layer if a member defaults.
Guarantee fund: The prefunded contributions of a clearing house’s members (the clearing fund at NSCC, OCC and FICC, the guarantee fund at CME and ICE) that stand behind the margin in the default waterfall, sized to the default of the largest member or the two largest under stress.
Default waterfall: The order in which a clearing house absorbs a defaulting member’s losses: the defaulter’s margin and fund contribution, the clearing house’s own contribution, the surviving members’ fund, the assessments on the members, then the recovery tools.
Cover two: The standard for the systemically important clearing houses: prefunded resources sufficient to cover the default of the two members (with their affiliates) that would cause the largest losses under extreme but plausible stress; cover one for the others.
Skin in the game: The clearing house’s own capital placed in the default waterfall ahead of the surviving members’ contributions, the subject of the standing argument between the CCPs and their members on how much it should be.
SPAN 2: CME’s margin model since 2023, replacing SPAN’s scenario grid with a historical value-at-risk over the look-back period with stress, liquidity and concentration add-ons, computed on the portfolio with the offsets across the correlated contracts.
STANS: OCC’s margin model since 2006: a Monte Carlo simulation of the underlyings’ prices with the options repriced on each path and the expected shortfall of the worst 1% taken, with the add-ons and the offsets for the lodged hedges.
Jump-to-default risk: The margin component of a CDS clearing house for the loss if a reference entity defaults tomorrow, net of the recovery, charged on top of the spread risk; the risk the futures models do not have.
Price alignment: The interest paid or received on the cumulative variation margin of a cleared swap at the overnight rate, so that the daily settlement of the variation margin leaves the cleared swap priced like a collateralized bilateral one.
Settled-to-market: The treatment of a cleared swap’s daily variation margin as a settlement that resets the swap’s value to zero rather than as collateral, which changes its accounting and the leverage ratio treatment; the standard at CME and LCH.
LSOC: Legally segregated, operationally commingled: the CFTC’s model for the cleared swaps customers’ collateral, held in an omnibus account at the clearing house but attributed to each customer so that one customer’s collateral cannot cover another’s default, which supports the porting of a defaulting member’s clients.
Customer segregation: The Commodity Exchange Act’s section 4d requirement that an FCM hold its futures customers’ funds separately from its own and from the cleared swaps customers’, reported daily; the clearing houses hold the customer margin gross by customer since 2012.
Sponsored clearing: A clearing member bringing its clients’ trades into the clearing house under its own membership; at FICC, the netting member sponsors money funds, hedge funds and asset managers into the CCP, submits their Treasury and repo trades, guarantees their performance and margins them.
Done-away clearing: Clearing a trade executed with one dealer through another firm as the clearing member, which the Treasury clearing mandate requires the CCPs to allow on fair terms so that the clients are not tied to their executing dealers for clearing.
Treasury clearing mandate: The SEC’s December 2023 rule requiring the direct participants of a Treasury CCP to clear their eligible secondary cash trades by December 31, 2026 and their repo and reverse repo by June 30, 2027 (after the 2025 extension), with the segregation of the indirect participants’ margin and the done-away access.
Delivery versus payment: A settlement in which the securities are delivered only if the payment is made and the payment made only if the securities are delivered, removing the principal risk; model 1 settles both gross and simultaneously (Fedwire Securities), model 2 the securities gross and the cash net (DTC).
Payment versus payment: A settlement in which the two currency legs of an FX trade are settled together or not at all, removing the Herstatt risk; CLS’s mechanism across its accounts at the central banks.
Herstatt risk: The settlement risk of paying one currency of an FX trade before receiving the other, named for Bankhaus Herstatt, closed in June 1974 after receiving its Deutsche mark legs and before paying its dollar legs; the risk CLS was built to remove.
Immobilization: Holding the securities’ certificates in a depository’s vault (or dematerialized) so that ownership moves by book entry rather than by delivery of the paper; DTC’s purpose since 1973.
Cede & Co.: DTC’s nominee, in whose name nearly every US security is registered on the issuers’ books, with the participants’ positions on DTC’s books and the beneficial owners on the participants’; the street name chain.
Net debit cap: The limit on a depository institution’s daylight overdraft at the Fed under the payment system risk policy, a multiple of its capital; for a foreign branch the capital measure is a fraction of the parent’s worldwide capital.
Daylight overdraft: A negative balance a bank runs on its Fed master account during the day, allowed under the Fed’s payment system risk policy up to the net debit cap, free up to the collateralized amount and at a fee above it, to be repaid by the close.
Prefunding: Paying cash into a system’s account before the payments are released (CHIPS’s opening position, RTP’s joint account, CLS’s pay-ins), so that the system extends no credit and the finality rests on money already there.
Real-time gross settlement: A payment system that settles each payment individually and finally in central bank money as it arrives, with no netting and no settlement risk between the participants (Fedwire, T2, CHAPS, Lynx), at the cost of the liquidity each payment needs.
T+1: The settlement cycle of the US securities market since May 28, 2024 (Canada and Mexico the day before), one business day after the trade, which halved the margin NSCC holds and set the 21:00 ET affirmation deadline on the trade date; the UK and the EU follow in October 2027.
Affirmation: The client’s or custodian’s agreement with the trade details on trade date, required for next-day settlement in the US.
Exercise by exception: OCC’s automatic exercise at expiry of every option that is in the money by any amount unless the holder instructs otherwise, so that a holder must act to avoid being exercised.
Special opening quotation: The settlement value of the SPX monthly options and the VIX derivatives, computed from the opening prices of the component stocks or the SPX options on the settlement morning rather than from a closing level.
TBA: To be announced: the forward trade in agency MBS by agency, coupon, term, face and settlement month with the pools named two days before settlement, the way most agency MBS trade and the mortgage lenders hedge their pipelines.
Class dates: SIFMA’s monthly settlement dates for the TBA classes (A for the 30-year conventional, B for the 15-year, C for the 30-year Ginnie Mae, D for the others), with the 48-hour notification day before each.
Good delivery: SIFMA’s guidelines on what pools may be delivered against a TBA trade: the agency, the coupon, the term, the face within the variance of 0.01%, the number of pools per million.
Dollar roll: Selling the front-month TBA and buying the next month’s, by which the investors stay long the agency MBS without taking delivery and the dealers fund their pools; the roll’s implied financing rate is a market of its own.
Tri-party repo: A repo settled through a clearing bank (BNY, the single tri-party agent since 2019) that holds the collateral in its own books, allocates it to the lender against the cash, values and marks it, without the securities moving on Fedwire; the money funds’ and the Fed’s reverse repo market.
GCF repo: The general collateral finance repo among the dealers through the interdealer brokers, anonymous, netted by FICC as the counterparty and settled on the tri-party platform; a large part of the dealers’ overnight funding.
Block trade: A large futures or swap trade negotiated privately off the order book above the minimum size, reported to the exchange or the SEF within minutes and cleared like any other; the exchanges set the sizes and the reporting windows.
Exchange for physical: A transaction in which a futures position is exchanged for the cash security or the physical commodity between two parties off the book (the Treasury basis trade’s mechanism), reported to the exchange and cleared.
Made available to trade: The CFTC’s determination, on a SEF’s submission, that a swap subject to the clearing mandate must be executed on a SEF or a DCM; the benchmark interest rate swaps and the CDX and iTraxx indexes.
Void ab initio: The CFTC rule that a swap executed on a SEF and rejected by the clearing house is void from the start, so that neither party is left with a bilateral swap it did not intend; the pre-trade credit checks make the rejections rare.
Composite price: A reference price for a bond built from the recent trades (TRACE), the quotes and a model, published by the platforms (MarketAxess’s CP+) and the data vendors, which the request-for-quote responses are judged against.
Reports, tapes and data
SIP: The securities information processor: the consolidator of every exchange’s quotes and trades into the national best bid and offer and the last sale under the CTA plan (the NYSE-listed tapes A and B) and the UTP plan (the Nasdaq-listed tape C), with the revenue shared among the exchanges.
CAT: The Consolidated Audit Trail: every order, route, modification, cancel and execution in US equities and listed options, reported to FINRA by 08:00 ET the next day with customer identifiers.
OPRA: The Options Price Reporting Authority, the consolidated tape of the US options exchanges’ quotes and trades, whose message rate exceeds the equity tape’s by an order of magnitude.
TRACE: FINRA’s Trade Reporting and Compliance Engine: every US bond trade is reported to it and published to the market within minutes.
SDR: Swap data repository: where every swap is reported under Dodd-Frank so regulators can see the market (DTCC).
Rule 605 report: The monthly execution quality report of every market center (the exchanges, the wholesalers, the ATSs) under the SEC’s Rule 605, with the effective spreads, the price improvement and the speed, strengthened in 2024.
Rule 606 report: The quarterly report of a broker-dealer’s order routing under the SEC’s Rule 606, naming the venues it routes to and the payment for order flow and the rebates it receives.
Large trader report: The daily report by the clearing members and the FCMs of the positions above the CFTC’s reporting levels, by trader, from which the exchanges enforce the position limits and the CFTC publishes the Commitments of Traders.
Commitments of Traders: The CFTC’s weekly report of the aggregate futures and options positions by category of trader (commercial, non-commercial, the disaggregated categories), built from the large trader reports.
Form ATS-N: The SEC form on which an alternative trading system for equities discloses its operations, its order types, its subscribers and its conflicts, public since 2019.
UTI and UPI: The unique transaction identifier and the unique product identifier of the global derivatives reporting standards, adopted by the CFTC, the EU and the UK between 2022 and 2024 with the critical data elements, so that a swap is reported the same way to every repository.
LEI: The legal entity identifier, the 20-character code identifying the parties to the financial transactions under the Global LEI Foundation’s system, required on the derivatives reports and much else since 2012.
Infrastructure, agencies and authorities
SEC: The Securities and Exchange Commission: the US regulator of the securities markets, the broker-dealers, the exchanges and clearing agencies, the investment advisers and funds, and the public companies’ disclosure.
CFTC: The Commodity Futures Trading Commission: the US regulator of the futures and swaps markets, the swap dealers, the futures commission merchants and the derivatives clearing organizations, with the cross-border rules that reach the US banks’ foreign branches.
Federal Reserve: The US central bank and the consolidated supervisor of the bank holding companies (and of the foreign banks’ US operations): monetary policy, the discount window and the standing repo facility, CCAR, the resolution plans with the FDIC, Fedwire.
FINRA: The Financial Industry Regulatory Authority: the self-regulatory organization of the US broker-dealers under the SEC’s oversight, with the conduct rules, the examinations and the TRACE reporting.
NFA: The National Futures Association, the self-regulatory organization of the US futures and swaps industry, which registers the FCMs, the swap dealers and the others and performs the SEFs’ market surveillance under contract.
FSOC: The Financial Stability Oversight Council, the council of the US financial regulators created by the Dodd-Frank Act, which designated the eight systemically important financial market utilities in 2012.
SIFMU: A systemically important financial market utility designated by the FSOC under Title VIII of the Dodd-Frank Act (DTC, NSCC, FICC, CME Clearing, ICE Clear Credit, OCC, CLS, CHIPS), subject to the Fed’s risk management standards beside its primary regulator’s and eligible for a Fed account.
Title VIII: The Payment, Clearing and Settlement Supervision Act, the title of the Dodd-Frank Act that lets the FSOC designate the systemically important utilities and the Fed set standards for them and give them accounts and services.
Covered clearing agency: A clearing agency registered with the SEC that is a CCP or a CSD, subject to the SEC’s Rule 17Ad-22(e) standards (the margin at a 99% confidence, cover one or two, the liquidity, the recovery and wind-down plans, the operational risk).
DCO: A derivatives clearing organization registered with the CFTC under the Commodity Exchange Act and Part 39 of its regulations, with the core principles on margin, the default fund, the segregation and the reporting; CME Clearing, ICE Clear US and Credit, OCC and LCH among them.
DCM: A designated contract market, a futures exchange designated by the CFTC under the Commodity Exchange Act, self-certifying its contracts and rules and running its own surveillance and position limits.
SEF: Swap execution facility: a CFTC-registered platform where standard swaps must be traded (Tradeweb, Bloomberg SEF).
ATS: An alternative trading system: a matching venue run by a broker-dealer under Regulation ATS rather than as an exchange; dark pools are ATSs that do not display quotes.
NYSE: The New York Stock Exchange, the listing exchange of 1792 owned by ICE since 2013, with its opening and closing auctions facilitated by the designated market makers; the NYSE Group runs five equity exchanges and two options exchanges.
Nasdaq: The electronic market of 1971, an exchange since 2006 and a listed group running nine US exchanges, the Nordic and Baltic markets, the Nasdaq-100 index and data business and a technology business selling its systems to other markets.
Cboe: Chicago Board Options Exchange, the largest US listed options exchange (SPX, VIX).
CME Group: The listed group of the Chicago Mercantile Exchange, the Chicago Board of Trade, NYMEX and COMEX on the Globex platform with CME Clearing, the largest derivatives marketplace in the world, with BrokerTec and EBS since 2018.
ICE: Intercontinental Exchange, the listed group founded in 2000 that owns the NYSE, the ICE futures exchanges and clearing houses (ICE Clear US, Europe, Credit), ICE Data Services and the mortgage technology businesses.
OCC: Options Clearing Corporation: the clearing house for every listed option in the US.
DTCC: The Depository Trust and Clearing Corporation, the user-owned holding company of DTC, NSCC and FICC (the three systemically important clearing agencies of the US securities market) and of the data and processing subsidiaries (DDR, ITP, the GTR).
NSCC: National Securities Clearing Corporation: the clearing house for US stocks and corporate bonds; nets each firm to one position per security per day.
DTC: Depository Trust Company: holds nearly all US stocks, corporate bonds and money market instruments in book-entry form and moves them against payment.
FICC: Fixed Income Clearing Corporation: the clearing house that stands between dealers in Treasury and repo trades and nets their deliveries.
DDR: DTCC Data Repository, the largest swap data repository, registered with the CFTC and the SEC in the US and through its affiliates with the EU, UK, Japanese, Singaporean, Australian and Canadian regimes.
CTM: DTCC’s Central Trade Manager: matches the broker’s trade details with the client’s and its custodian’s so settlement can happen.
ALERT: DTCC’s database of standing settlement instructions: where the bank picks up a client’s custodian and account details instead of asking by email.
Fedwire: The Federal Reserve’s real-time payment system; the way large US dollar payments move between banks.
Fedwire Securities: The Federal Reserve’s book-entry system for Treasuries and agency securities; delivers a bond against its payment at the same moment (DVP).
NSS: The Fed’s National Settlement Service, through which a settlement agent (DTC, the ACH operators, the check clearing houses) submits one file of its participants’ net debits and credits and the Fed moves the balances between their settling banks’ reserve accounts at once.
CHIPS: Private large-value US dollar payment network run by The Clearing House, mostly for international payments.
FedNow: The Fed’s instant payment service, launched in July 2023, settling each credit transfer gross and final on the participants’ master accounts 24 hours a day, every day, with a transaction limit raised to USD 1,000,000 in 2025.
RTP: The Clearing House’s real-time payments network, launched in 2017, settling each payment by adjusting the participants’ balances in a prefunded joint account at the New York Fed, final on the adjustment, 24 hours a day.
ACH: The Automated Clearing House network for batch electronic payments between bank accounts; one to two days, low cost.
Nacha: The industry association that writes and enforces the operating rules of the ACH network on the participating banks and their customers; formerly the National Automated Clearing House Association.
CLS: CLS Bank settles both sides of a currency trade at the same moment (payment versus payment) so neither party pays without receiving.
CLSNet: CLS’s bilateral netting calculation service for the FX trades in the currencies and between the counterparties outside the CLS settlement, which standardizes the netting without the payment-versus-payment settlement.
ISDA determinations committee: The regional committees of dealers and buy-side firms under ISDA that rule on whether a credit event has occurred under the CDS definitions and whether an auction will settle the contracts.
Markitwire: Electronic confirmation and affirmation platform for swaps, also the route into clearing houses.
EPN: Electronic Pool Notification: how a TBA seller tells the buyer which mortgage pools it will deliver, 48 hours before settlement.
BrokerTec: The main interdealer order book for US Treasuries and repo, owned by CME.
Tradeweb: Electronic marketplace for bonds, swaps and ETFs, mainly request-for-quote to several dealers.
MarketAxess: Electronic marketplace for corporate bonds, request-for-quote and all-to-all trading.
Bloomberg: Terminal, chat and trading platform used across the market; also a SEF and a bond and FX venue.
SIFMA: The Securities Industry and Financial Markets Association, the US trade association of the dealers, banks and asset managers, which sets the market conventions (the TBA class dates and good delivery guidelines, the holiday calendar, the recommended practices) and speaks for the industry.
Inside the infrastructure: systems and documents
Pillar: The NYSE Group’s trading platform, the matching engine of its equity and options exchanges, with the Pillar gateway as the members’ order entry protocol.
INET: Nasdaq’s matching engine, inherited from the Instinet and Island ECNs acquired in 2005, with the OUCH order entry protocol and the sub-100-microsecond latency; licensed to other exchanges as Nasdaq’s technology.
Globex: CME’s electronic trading system for futures and options.
ENCORE: OCC’s clearing system, through which the clearing members see their positions, submit the exercises and receive the assignments and the margin.
Order imbalance feed: The NYSE’s data feed publishing the indicative auction price, the matched volume and the imbalance of the opening and closing auctions every second in the minutes before them.
Net order imbalance: Nasdaq’s indicator publishing the indicative price and the imbalance of the opening and closing crosses every second from 09:28 and 15:55.
Settlement price: The daily price per contract month the futures exchange computes at the close of its settlement window (the volume-weighted average, the book midpoint or the spread relationships) and the clearing house marks every position to for the variation margin.
Margin call: The clearing house’s demand to its members (and the members’ to their clients) for the initial margin on the new positions and the variation margin on the day’s moves, to be met by the morning deadline through the settlement banks.
Clearing portal: The clearing firm’s site for its introducing brokers: accounts, orders, cashiering, margin, reports, exception queues.
Default management: The clearing house’s process when a member fails: the declaration, the porting of the clients, the hedging of the house portfolio with the default management committee of member traders, the auction to the surviving members, the waterfall.
Auction: The clearing house’s sale of a defaulting member’s portfolio to the surviving members, who are obliged to bid; also the ISDA auction that sets the recovery price after a credit event and the settlement auctions of the exchanges.
Night cycle: DTC’s batch processing of the next day’s deliveries from 20:30 ET on the trade date, settling most of them before the day cycle begins against the participants’ collateral and net debit caps.
Pay-in schedule: CLS’s notice to each settlement member, issued the evening before the value date, of the net amounts it must pay into CLS’s account at each central bank by the hourly deadlines of the settlement window.
FedLine: The Fed’s access channels (FedLine Direct, Advantage, Web) through which the participants send and receive the Fedwire, FedACH and FedNow messages and reach the Fed’s other services.
ISO 20022: The international standard for the financial messages (the pacs.008 customer credit transfer, the pacs.009 bank transfer, the camt statements) with the structured data the old formats lacked, adopted by T2 in 2023, CHAPS in 2023, CHIPS in 2024 and Fedwire in 2025.
Trade capture: The front-office system where every trade is booked and positions, risk and P&L are kept, one per desk family in most banks (Murex MX.3, Calypso, Summit, Bloomberg TOMS, Fidessa, in-house).
Reporting hub: The engine that turns bookings into regulatory reports (TRACE, CAT, SDR, SBSDR, RTRS, FR 2052a) and tracks acknowledgments and rejects (DTCC Report Hub, AxiomSL, in-house).
Stress test engine: The models and data that project the balance sheet, capital and liquidity under the supervisory and internal scenarios.
Risk engine: Computes end-of-day and intraday sensitivities, VaR and stress results from the trade population and market data; in-house, or the risk module of the trade capture system.
SWIFT message types used in the diagrams
MT300: SWIFT confirmation of an FX trade.
MT305: SWIFT confirmation of an FX option.
MT320: SWIFT confirmation of a fixed-term loan or deposit.
MT950: SWIFT account statement from a correspondent bank.
camt.053: ISO 20022 end-of-day bank account statement, the successor to MT950.
MT535: SWIFT statement of securities holdings from a custodian.
MT541: SWIFT instruction to receive securities against payment.
MT543: SWIFT instruction to deliver securities against payment.
camt.057: ISO 20022 notice to the account holding bank or custodian to expect an incoming payment, the successor of the MT210.
MT900: SWIFT debit confirmation from a bank.
MT304: SWIFT advice of an FX trade from a manager to its custodian, so the custodian can settle it.
MT545: SWIFT confirmation from the custodian that securities were received against payment.
MT547: SWIFT confirmation from the custodian that securities were delivered against payment.
MT548: SWIFT settlement status from the custodian: pending, matched, failed, with the reason.
MT566: SWIFT corporate action confirmation: the cash or securities credited for an event.
MT540-543: SWIFT instructions to receive or deliver securities, with or without payment; used to move collateral.
MT515: SWIFT client confirmation of a securities trade.
MT527: SWIFT triparty collateral instruction.
MT600: SWIFT confirmation of a precious metals trade.
MT604: SWIFT precious metals transfer or allocation instruction.
MT670: SWIFT standing settlement instruction update: how a counterparty notifies its SSIs by authenticated message.
MT340: SWIFT confirmation of a forward rate agreement.
MT564: SWIFT corporate action notification from a custodian or depository: the event, the options and the deadline.
MT502: SWIFT order to buy or sell securities, sent by a client to its broker or manager.
MT509: SWIFT trade status message from a broker or custodian.
MT101: The SWIFT request for transfer a corporate sends its bank, or a bank sends another, to move funds from the customer’s account.
MT700: The SWIFT message by which a bank issues a documentary credit to the advising bank.
MT710: The SWIFT advice of a documentary credit issued by a third bank, sent by the advising bank onward.
MT742: The SWIFT reimbursement claim a paying or negotiating bank sends the reimbursing bank under a documentary credit.
MT754: The SWIFT advice of payment, acceptance or negotiation sent by the paying bank to the issuing bank under a documentary credit.
MT799: The SWIFT free-format message between banks, used for trade finance correspondence and bank-to-bank undertakings.
MT940: The SWIFT customer statement message a bank sends an account holder (or its other bank) with the day’s entries and balances.
MT540: The SWIFT instruction to receive securities free of payment, used for the stock loans and the collateral deliveries.
MT306: The Swift confirmation of the FX options the MT305 cannot describe: average rate (Asian) options and forwards, barriers, digitals and other exotic structures, with their averaging or observation dates.
MT380: The Swift FX order: an investment manager instructs its custodian to buy or sell a currency for a fund; the custodian confirms the execution with an MT381.
MT606: The Swift precious metal debit advice: the account keeper tells the account owner its metal account was debited, with the bar list when the metal moves into allocated bars.
MT607: The Swift precious metal credit advice: the account keeper tells the account owner its metal account was credited, in fine troy ounces.
MT608: The Swift statement of a metal account: the opening and closing balances in ounces and the movements of the period, or the bars held in an allocated account.
ICE and NYSE›NYSE
NYSE: the Equities Day From the Opening Auction to the Close, the DMM, Reg NMS and the Tape
The New York Stock Exchange’s day: the auction book building before the open, the opening auction at 09:30 facilitated by the designated market maker, continuous trading on the Pillar book under Regulation NMS with the routing to protected quotes elsewhere, the tape through the SIP and the proprietary feeds, the LULD and market-wide halts, the closing auction at 16:00 where the index funds trade and the official close is set, the locked-in trades to NSCC and the events to the CAT, and the SEC’s oversight of a self-regulatory organization owned by ICE.
Worked example, illustrative:owner Intercontinental Exchange, since 2013; NYSE Group runs NYSE, NYSE Arca, NYSE American, NYSE National, NYSE Chicagohandles listing and trading of US equities; 1,500,000,000 shares a day on the group’s venues of 11,000,000,000 across the market, illustrativemembers the member broker-dealers, the DMMs (Citadel Securities, GTS, Virtu among them), the floor brokerslinks the SIP for the tape; NSCC for clearing; the CAT for the audit trail; the other fifteen exchanges under Reg NMSoverseen by the SEC, as a self-regulatory organization; FINRA under the regulatory services agreementthe day 04:00 early session on Arca; 09:30 opening auction; 16:00 closing auction; the trades to NSCC the same evening
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The NYSE is a listing franchise and two auctions: the opening and the closing prices a human DMM facilitates are what distinguish it among sixteen exchanges, and the closing auction is where the index money trades. Between them it is one order book among many under Reg NMS, and the trades leave for NSCC at night.
The sixteen exchanges: the US equity market trades on sixteen registered exchanges owned by four groups (ICE’s NYSE Group, Nasdaq, Cboe and the smaller IEX, MEMX, MIAX and LTSE) plus some forty ATSs and the wholesalers who execute the retail flow off-exchange (about 45% of the volume trades off-exchange, illustrative); Regulation NMS binds them into one market with the order protection rule, the access rule and the consolidated tape.
The DMM: the designated market maker is the NYSE’s successor to the specialist, a member firm assigned a list of stocks with the obligation to quote at the national best bid or offer a share of the time, to facilitate the opening and closing auctions and to dampen the imbalances with its own capital; the DMMs are the large electronic market makers (Citadel Securities, GTS, Virtu) rather than the old floor firms, and the floor brokers work beside them.
The tape and the data: the SIPs consolidate every exchange’s quotes and trades into the NBBO under the CTA and UTP plans, governed by the exchanges and FINRA, and distribute the revenue by the plans’ formula; the exchanges sell their own faster depth-of-book feeds and connectivity, which is a large part of their revenue; the SEC’s 2020 market data infrastructure rule to add competing consolidators and expand the core data has been slow to take effect.
The CAT: the consolidated audit trail, built after the 2010 flash crash and operating since 2020, records every order, route, modification and execution in the US equity and options markets with the customer identifiers, reported by the exchanges and the broker-dealers by 08:00 the next day; funded by the industry under a fee plan the SEC approved and the courts reviewed; the SEC and the SROs use it for surveillance.
ICE Futures US and ICE Clear US: Softs, the Dollar Index and MSCI From the Match to the Delivery
A coffee merchant’s hedge through ICE Futures US and its clearing house: the order through the FCM and the match on the ICE platform, the novation to ICE Clear US with the initial margin on the ICE Risk Model, the daily settlement price and the variation margin through the settlement banks, the position limits and the large trader reports, the expiry with the delivery of certified coffee from a licensed warehouse or the cash settlement of the index contracts, and the CFTC’s oversight of the designated contract market and the derivatives clearing organization.
Worked example, illustrative:owner Intercontinental Exchange; the former New York Board of Trade, acquired in 2007handles sugar No. 11, coffee C, cocoa, cotton No. 2, orange juice, the US dollar index, MSCI and Russell index futures; 1,200,000 contracts a day, illustrativemembers the FCMs and the clearing members of ICE Clear US; the clients through the FCMs’ segregated accountslinks the settlement banks for the margin; the licensed warehouses and graders for delivery; the CFTC’s large trader systemoverseen by the CFTC as a DCM and a DCOthe cycle the match in the session; the settlement price at the close; the variation margin by the morning cycle; delivery after the first notice day
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A vertical silo in miniature: the exchange matches, its own clearing house novates and margins twice a day, and the warehouses it licenses deliver the coffee. The contracts are small beside CME’s, but the world prices sugar, coffee and cotton on them.
ICE: Intercontinental Exchange, founded in 2000 as an energy trading platform, bought the International Petroleum Exchange (now ICE Futures Europe), the New York Board of Trade (ICE Futures US), the Creditex CDS business (ICE Clear Credit), NYSE Euronext in 2013 (keeping NYSE, selling Euronext), and the mortgage technology businesses (Ellie Mae, Black Knight); a listed company whose exchanges, clearing houses and data each have their own regulators.
A vertical silo: in the US the futures exchanges own their clearing houses (CME Clearing for the CME exchanges, ICE Clear US for ICE Futures US), so a contract traded on one exchange clears at its clearing house and nowhere else, and the open interest cannot move; the equities and options markets are the opposite, with one CCP (NSCC, OCC) serving every exchange; the EU pushed for the choice of CCP in listed derivatives without much effect.
The DCO core principles: the Commodity Exchange Act and the CFTC’s Part 39 require a derivatives clearing organization to hold margin covering its exposures over the close-out period, a default fund covering the default of its largest member (cover one for the ordinary DCOs, cover two for the systemically important ones), daily stress tests, a recovery and wind-down plan and the segregation of the customers’ funds; ICE Clear US is a DCO, ICE Clear Credit a systemically important one.
Delivery: the physically delivered softs settle by the transfer of warehouse receipts for exchange-graded product in the licensed warehouses, the price differentials for the growths and the ports set by the exchange; the deliverable supply and the certified stocks are the figures the market watches into the delivery months; the dollar index and the equity index contracts settle in cash to the final index value.
ICE Clear Credit: the CDS Clearing House From the SEF Trade to the Credit Event Auction
A hedge fund’s CDX index trade through ICE Clear Credit: the execution on a SEF and the submission by the trade source, the acceptance and novation within seconds, the initial margin on the credit portfolio with the jump-to-default risk and the segregated client model, the daily cycle of end-of-day prices from the members’ firm quotes, variation margin and the coupons, the credit event settled at the ISDA auction price, a member default through the waterfall and the portfolio auction, and the oversight by the CFTC and the SEC of a systemically important utility.
Worked example, illustrative:owner Intercontinental Exchange; launched in 2009 from the Creditex business with the dealershandles index CDS (CDX, iTraxx) and single-name CDS in USD and EUR; USD 1,500,000,000,000 of notional a month, illustrativemembers the dealers as clearing members; the asset managers and hedge funds as clients under the LSOC modellinks the SEFs and the affirmation platforms as trade sources; the ISDA determinations committee and the Creditex auctions; the settlement banksoverseen by the CFTC (DCO) and the SEC (clearing agency); a systemically important FMU under the Fed’s standardsthe cycle acceptance in seconds; end-of-day prices from firm quotes; margin in the morning cycle; coupons quarterly
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A credit default swap clears the way a futures contract does, with two things of its own: a jump-to-default charge in the margin for the name that might fail tomorrow, and a credit event that turns protection into cash at an auction price the clearing house did not set. The members’ quotes price the book every night, and they must stand behind them.
CDS clearing: the Dodd-Frank Act requires the standardized swaps to be cleared and the ones made available to trade to be executed on a SEF; the index CDS (the CDX and iTraxx families) are cleared under the CFTC’s mandate, the single-name CDS (security-based swaps under the SEC) are cleared voluntarily by the dealers and the clients who want the netting and the capital treatment; ICE Clear Credit clears most of the US-cleared volume, LCH SA’s CDSClear and Japan’s JSCC the rest.
The credit event: the ISDA determinations committee (dealers and buy-side members by region) rules on whether a failure to pay, a bankruptcy or a restructuring has occurred and whether an auction will settle the contracts; the auction (run by Creditex and Markit) sets the recovery price from the dealers’ bids and the physical settlement requests; the cleared and the bilateral contracts settle at the same price, so the clearing house’s role is the cash settlement and the index re-versioning.
The margin model: a CDS clearing house margins the spread risk (the daily moves of the credit spread curve), the jump-to-default risk (the loss if a name defaults tomorrow, net of the recovery), the basis between the index and its constituents, the liquidity and concentration of the portfolio and the wrong-way risk of a member selling protection on itself; the close-out period is five days, longer than the futures clearing houses’ one or two, because the market is thinner.
Systemically important FMUs: the Financial Stability Oversight Council designated eight utilities in 2012 (DTC, NSCC, FICC, CME Clearing, ICE Clear Credit, OCC, CLS and CHIPS) under Title VIII of the Dodd-Frank Act, which subjects them to the Fed’s risk management standards beside their primary regulators’ and lets the Fed give them accounts and services; the designations have not changed since.
Nasdaq›Nasdaq
Nasdaq: the Opening and Closing Crosses, the INET Book, the Market Makers and the Data
The Nasdaq market’s day: the pre-market and the cross book from 04:00, the opening cross at 09:30 run by algorithm with the registered market makers in place of a DMM, continuous trading on INET with the electronic order types and the maker-taker fees under Regulation NMS, the tape C SIP and the TotalView and index businesses, the closing cross at 16:00 that sets the official close and trades the rebalances, the locked-in trades to NSCC and the events to the CAT, and the SEC’s oversight of a self-regulatory organization running nine exchanges.
Worked example, illustrative:owner Nasdaq, Inc., listed; the Nordic and Baltic exchanges, the technology and the data businesses beside the US exchangeshandles listing and trading of US equities, the options on six exchanges; 2,000,000,000 shares a day on the equity exchanges, illustrativemembers the member broker-dealers and the registered market makers with quoting obligationslinks the UTP SIP it runs for tape C; NSCC for clearing; the CAT; the other exchanges under Reg NMSoverseen by the SEC, as a self-regulatory organization; FINRA under contractthe day 04:00 pre-market; 09:30 opening cross; 16:00 closing cross; the rebalance days
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Nasdaq is the NYSE without the floor: two algorithmic crosses in place of a DMM’s judgment, a book built for speed, and a data and index business on the Nasdaq-100 that the technology companies it lists made valuable. One of sixteen exchanges between the crosses, like the NYSE.
Nasdaq’s history: the National Association of Securities Dealers’ automated quotation system of 1971, a dealer market where the market makers quoted and the orders went to them, became an exchange in 2006 after the order-handling rules of 1997 and the ECNs (INET among them, acquired in 2005) turned it into an order book; the listing of the technology companies since the 1980s and the Nasdaq-100 index of 1985 made its brand.
The crosses: the opening and closing crosses are single-price auctions run by algorithm: the on-open and on-close orders, the imbalance-only orders and the continuous book are matched at the price that maximizes the volume, with the imbalance published in advance so that the market can offset it; the NYSE’s auctions do the same with a DMM who can add capital and judgment, which matters in the stocks where the imbalance is large.
Maker-taker: most US exchanges pay a rebate to the order that rests on the book (the maker) and charge the order that takes it, within the SEC’s cap of 30 mils per share on the access fee; the inverted exchanges (Nasdaq BX, Cboe BYX and EDGA) do the reverse to attract the takers; the fee schedules shape the routing and are a recurring subject of SEC rulemaking.
Nasdaq as a vendor: the group sells its matching engine, its surveillance (SMARTS) and its clearing and risk technology to some 130 exchanges, clearing houses and regulators, and its anti-financial-crime software (Verafin) to the banks; with the data and the indexes, the non-trading businesses are the larger part of its revenue.
Cboe Options: SPX and VIX as Proprietary Products, the Floor and the Book, OCC Behind Every Trade
An asset manager’s SPX put through Cboe’s options exchanges: the proprietary product that trades on one exchange only, the match on the electronic book or by a floor broker in the SPX pit with the complex order book and the price improvement auctions, the market makers’ quoting obligations and OPRA, the trade to OCC as the single clearing house of the listed options market, the cash settlement of SPX to the special opening quotation and of VIX to its auction, the VIX as a product the exchange owns, and the SEC’s oversight of the options exchanges with the CFTC on the VIX futures.
Worked example, illustrative:owner Cboe Global Markets, listed; the Chicago Board Options Exchange of 1973, with the Bats exchanges acquired in 2017handles SPX and VIX options under exclusive license, the multi-listed equity and ETF options, the VIX futures on CFE; 12,000,000 contracts a day on four options exchanges, illustrativemembers the member broker-dealers; the designated primary market makers and the electronic market makerslinks OCC for the clearing; OPRA for the tape; the options linkage plan to the other twelve options exchanges; S&P Dow Jones Indices for the licenseoverseen by the SEC for the options exchanges; the CFTC for the Cboe Futures Exchangethe cycle the match in the session; the trade to OCC the same day; SPX settlement to the Friday opening quotation; VIX to its Wednesday auction
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Cboe sells two products nobody else can list, SPX and VIX, and competes for the rest on sixteen options exchanges that all clear at one clearing house. The floor survives for the large SPX orders, the daily expiries made the index options a retail product, and OCC stands behind every contract.
The US options market: sixteen options exchanges owned by four groups (Cboe’s four, Nasdaq’s six, NYSE’s two, MIAX’s four) trade the listed options under the SEC’s rules, with OPRA as the consolidated tape, the options linkage plan for the routing to the best quote, and OCC as the single clearing house; the proprietary index products (SPX and VIX at Cboe, the Nasdaq-100 options at Nasdaq) are the exceptions to the multi-listing.
Exclusive licenses: an index option needs a license from the index owner, and Cboe holds the exclusive licenses for the S&P 500 and the VIX (and the Russell 2000 for options); the licenses have been litigated and renewed, and they are the moat of Cboe’s options business, since the multi-listed options compete on fees and the index options do not.
The zero-day options: SPX options expiring every trading day since 2022 (with the Monday to Friday expiries added one by one) made the index options a retail and an intraday product, now about half of the SPX volume; the exchange lists thousands of series, the market makers quote them all, and OPRA’s message rate grew with them.
The VIX settlement: the VIX futures and options settle to a special opening quotation computed from the opening prices of the SPX options in a dedicated auction on the settlement morning (the Wednesday 30 days before the third Friday of the following month), a mechanism the exchange runs and the CFTC and the SEC have reviewed after the manipulation claims of 2018; the index itself is computed every 15 seconds from the live SPX option prices.
Cboe›Cboe Equities
Cboe Equities and the Off-Exchange Market: Four Books, Maker-Taker and Inverted, the Wholesalers and the Dark Pools
A retail order and an institutional order through the US equity market structure: the smart order routers choosing among sixteen exchanges, forty ATSs and the wholesalers, the retail order internalized by a wholesaler for payment for order flow and reported to the trade reporting facility, the institutional slices on Cboe’s lit books and in the dark pools, Cboe’s four exchanges with the maker-taker and inverted fee models, the tape and the periodic auctions without a listing franchise, post-trade to NSCC and the CAT with the Rule 605 and 606 reports, and the SEC and FINRA over the exchanges, the ATSs and the wholesalers.
Worked example, illustrative:owner Cboe Global Markets; the Bats exchanges of 2005 acquired in 2017 (BZX, BYX, EDGX, EDGA)handles US equity trading on four exchanges with four fee models; 3,000,000,000 shares a day, illustrative; the ETF listings on BZXmembers the member broker-dealers and their routers; the market makers; the retail brokers through the wholesalers off-exchangelinks the SIPs; NSCC and DTC; the CAT; FINRA’s trade reporting facilities for the off-exchange tradesoverseen by the SEC, as SROs; FINRA for the ATSs and the wholesalersthe structure sixteen exchanges, forty ATSs, the wholesalers; about 45% of the volume off-exchange
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Cboe has no closing auction to sell, so it sells fee models: four books, two of them paying the taker. Around them the retail flow goes to the wholesalers for a payment and the institutional flow to the dark pools, and Reg NMS binds sixty venues into one market the router has to read.
The off-exchange market: the wholesalers execute the retail brokers’ orders against their own inventory at prices inside the NBBO and pay for the order flow (banned in the UK and the EU, allowed in the US with disclosure under Rule 606); the ATSs (the dark pools run by the banks and the independents) match institutional orders at the midpoint without displaying quotes; both report to FINRA’s trade reporting facilities, so the tape shows the trades but not the quotes.
Regulation NMS: the SEC’s 2005 rule set that made the fragmented market one: the order protection rule (no trade-throughs of protected quotes), the access rule (fair access and the fee cap), the sub-penny rule and the market data rules; the 2024 amendments cut the tick size for the tick-constrained stocks and the access fee cap from 2025 and tightened the Rule 605 execution quality disclosure.
Bats and Cboe: Bats Global Markets, founded in 2005 as an ECN by the high-frequency traders and the banks, became the second-largest US exchange group by volume on its technology and its fee models, bought Direct Edge in 2014 and was bought by Cboe in 2017, which moved its options exchanges onto the Bats technology; Cboe Europe (the former Bats Europe) is the largest pan-European equity venue.
Best execution: FINRA’s Rule 5310 requires a broker to seek the best terms reasonably available for its customers’ orders, considering the price, the speed, the fill likelihood and the costs; the SEC’s own best execution rule proposed in 2022 was not adopted; the Rule 606 routing reports and the Rule 605 execution quality reports are how the brokers and the market centers are held to it.
CME, CBOT, NYMEX and COMEX on Globex: From the Order to the Settlement Price and the Delivery
An asset manager’s Treasury futures sale through the CME Group exchanges: the order through the FCM to Globex, the match on the central limit order book with the implied orders and the price banding, the liquidity providers, the block trades and the exchanges for physical, every contract cleared at CME Clearing as a vertical silo, the daily settlement price computed at each contract’s settlement time, the expiry and delivery of Treasury notes through Fedwire Securities, of WTI at Cushing and of gold in the COMEX vaults, and the CFTC’s oversight of the four designated contract markets.
Worked example, illustrative:owner CME Group, listed; the Chicago Mercantile Exchange (1898), the Chicago Board of Trade (1848, merged 2007), NYMEX and COMEX (acquired 2008); BrokerTec and EBS since 2018handles interest rate, equity index, energy, metals, agricultural and FX futures and options; 25,000,000 contracts a day, illustrativemembers the FCMs and the clearing members; the clients through the FCMs’ segregated accounts; the proprietary trading firmslinks CME Clearing for every contract; Fedwire Securities for the Treasury deliveries; the pipelines, vaults and warehouses for the physical deliveriesoverseen by the CFTC, as four designated contract marketsthe day Globex 23 hours from 18:00 ET Sunday; the settlement prices in the afternoon; the deliveries at expiry
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Four exchanges, one platform, one clearing house and no way out: a CME contract clears at CME. The settlement price the exchange computes each afternoon is the reference the market marks to, and the deliveries at expiry reach from Fedwire to a pipeline in Oklahoma.
Globex: the CME’s electronic platform, launched in 1992 for after-hours trading and the only venue since the trading floors closed (the Chicago pits in 2015, the NYMEX pits in 2016, the last Eurodollar options pit in 2021); it matches by price and time or pro rata by contract, supports the implied spread orders that link the calendar months, and distributes the market data on MDP 3.0; the matching engines sit in the Aurora, Illinois data center where the proprietary firms co-locate.
The vertical silo: a US futures exchange owns its clearing house and the open interest in its contracts, so the contracts are not fungible across exchanges and a competitor must build liquidity from zero (as ICE did in energy and the newer exchanges have tried in rates); the equity options market with OCC and the equity market with NSCC are horizontal by contrast; the EU’s attempt to open the listed derivatives silos under MiFIR’s open access was postponed and then dropped.
The settlement price: the exchange’s daily settlement price for each contract month is the mark the clearing house uses for the variation margin and the reference for the funds, the swap books and the accounting; the methods (the volume-weighted average of the closing window, the book midpoint, the spread relationships for the back months, the committee for the illiquid) are published per product; the final settlement price at expiry is the cash settlement value or the invoice price for delivery.
Delivery: the Treasury futures deliver the cheapest-to-deliver note through Fedwire Securities against the invoice price (settlement price times the conversion factor plus accrued interest), which ties the futures to the cash market through the basis trade; the energy contracts deliver physically (WTI at Cushing) or settle financially; the metals deliver warrants on the approved vaults; the equity index and the rate contracts settle in cash.
CME Clearing: Novation, SPAN 2, the Twice-Daily Cycle, the Guarantee Funds and the Default Waterfall
CME Clearing for the listed contracts: the novation of every contract the four exchanges match, the initial margin on SPAN 2 across the portfolio paid through the settlement banks, the FCM margining its client in the customer segregated accounts held gross at the clearing house, the twice-daily settlement cycle with the variation margin in cash on Fedwire by the morning deadline, the two guarantee funds sized to cover two with the waterfall and the assessments, a clearing member default handled by porting, hedging and the auction, and the CFTC’s and the Fed’s oversight of a systemically important DCO.
Worked example, illustrative:owner CME Group; the clearing division of the exchange, the counterparty to every contract on CME, CBOT, NYMEX and COMEXhandles the novation and margining of 25,000,000 contracts a day and 100,000,000 open positions, illustrative; the cleared swaps beside themmembers the clearing members (FCMs and banks) with house and gross customer accounts; the clients through the FCMs’ 4d segregationlinks the settlement banks and the clearing house’s Fed account for the cash margin; Fedwire; the exchanges for the trades and the settlement pricesoverseen by the CFTC as a systemically important DCO; the Fed under Title VIII as a SIFMUthe cycle margin on SPAN 2; variation margin by 06:40 CT; an intraday cycle at midday; the guarantee funds recalculated monthly
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The clearing house is the other side of every CME contract, and its day is two cash cycles: the losers pay by 06:40 and the winners are paid, the margin covers the next move, and the guarantee funds cover the two largest members failing at once. The FCM stands between it and the client with the client’s money in segregation.
SPAN and SPAN 2: the Standard Portfolio Analysis of Risk, CME’s margin model since 1988 and licensed to most futures clearing houses, scans a portfolio over a grid of price and volatility moves and takes the worst loss with the inter-commodity offsets; SPAN 2, phased in from 2023, replaces the grid with a historical value-at-risk model with stress, liquidity and concentration add-ons, closer to the models the swap clearing houses use.
Customer segregation: the Commodity Exchange Act’s section 4d requires an FCM to hold its futures customers’ funds separately from its own and from the cleared swaps customers’ funds (the 4d(f) accounts), with the clearing house holding the customer margin gross by customer since 2012 (after MF Global); the FCM reports the segregation daily and the CFTC’s rules limit what the FCM may invest the funds in.
The settlement banks: the clearing house settles its cash with the members through a small group of approved settlement banks (the large US banks) that confirm the payments by the morning deadline, and holds its own cash at the Federal Reserve Bank of Chicago since the Fed opened accounts to the designated FMUs under Title VIII; the intraday cycle and the ad hoc calls are the clearing house’s defense against a day like March 2020.
Cover two and the waterfall: the systemically important DCOs must hold prefunded resources covering the default of the two largest members under extreme but plausible stress; the waterfall orders the losses (the defaulter’s resources, the clearing house’s skin in the game, the survivors’ guarantee fund, the assessments) and the recovery plan sets what comes after; the clearing houses’ skin in the game and the end of the waterfall are the standing argument between the CCPs and their members.
CME Cleared Swaps: the SOFR Swap From the SEF to the Clearing House, the Treasury Futures Offset and the CME-LCH Basis
An asset manager’s SOFR swap cleared at CME: the execution on a SEF and the submission by the trade source with the clearing house chosen before the trade, the acceptance and novation within seconds, the initial margin on a five-day value-at-risk with the portfolio margining against the Treasury futures and the LSOC client model, the daily cycle of variation margin as settlement with price alignment, the coupons and the compression, the CME-LCH basis as the price of clearing the same swap at two houses, the separate IRS guarantee fund and a member default, and the CFTC’s clearing mandate and DCO oversight.
Worked example, illustrative:owner CME Group; the OTC clearing service of CME Clearing, launched for interest rate swaps in 2010handles USD and the major-currency interest rate swaps, with the portfolio margining against the Treasury and SOFR futures; a minority of the dollar swap market beside LCHmembers the FCMs and swap dealers as clearing members; the asset managers and funds as clients under the LSOC modellinks the SEFs and Markitwire as trade sources; the swap data repositories; LCH SwapClear on the other side of the basis; the settlement banksoverseen by the CFTC under the DCO rules and the clearing mandate; the Fed as a SIFMUthe cycle acceptance within ten seconds; variation margin and price alignment daily; the coupons on the dates; compression cycles
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The dollar swap clears at LCH in London or at CME in Chicago, and the two prices differ by a basis the dealers trade. CME’s draw is the Treasury futures next door, margined in the same portfolio; the mechanics are a futures clearing house’s with a five-day horizon and a daily reset.
The clearing mandate: the Dodd-Frank Act requires the swaps the CFTC designates to be cleared at a registered DCO and, where made available to trade, executed on a SEF or DCM; the designated swaps are the fixed-floating, basis, forward rate and overnight index swaps in USD, EUR, GBP and JPY (extended to other currencies in 2022) and the CDX and iTraxx index CDS; the end users hedging commercial risk are exempt.
Variation margin as settlement: a cleared swap’s daily variation margin is a settlement payment that resets the swap’s value to zero (settled-to-market), not collateral, which changes its accounting and capital treatment; the price alignment amount (interest on the cumulative variation margin at the overnight rate) keeps the cleared swap’s economics equal to a bilateral swap collateralized under a CSA.
LSOC: the legally segregated, operationally commingled model the CFTC requires for cleared swaps customers: the clearing house holds the customers’ collateral in an omnibus account but knows each customer’s share and may not use one customer’s collateral for another’s default (unlike the futures customers’ omnibus accounts), which supports the porting of a defaulting member’s clients.
The CME-LCH basis: a swap cleared at CME trades a few basis points from the same swap cleared at LCH because the margin models and the funding costs differ and because the client flows are one-directional at each house (receivers at CME, payers at LCH on the dealers’ side); the basis widened to 3 or 4 basis points at times and the dealers trade it as a product; the choice of clearing house is made at the trade and cannot be changed after.
OCC: One Clearing House for Every US Listed Option, From Novation to Exercise and Assignment
The Options Clearing Corporation’s cycle: the matched trades from the sixteen options exchanges novated the same day, the margin on STANS across the options and the hedges with the customer margin held gross, the clearing member margining its customers under Regulation T and the portfolio margin rules, the daily premium settlement, marks and clearing fund, the exercise and the random assignment to a short position, the settlement of exercised equity options as stock trades through NSCC and DTC and of the index options in cash, the stock loan programs with OCC as counterparty, and the SEC’s and the CFTC’s oversight of a systemically important clearing agency owned by the exchanges.
Worked example, illustrative:owner the options exchanges (Cboe, Nasdaq, NYSE, MIAX) as a user-owned utility; founded in 1973 with the CBOEhandles every US listed equity, index and ETF option, the securities futures, the stock loan programs; 45,000,000 contracts a day, illustrativemembers the clearing members (broker-dealers and FCMs) with firm, market maker and customer accounts; the customers behind themlinks NSCC and DTC for the stock settlement of exercises; the settlement banks and OCC’s Fed account for the cash; the sixteen exchanges for the tradesoverseen by the SEC as a covered clearing agency; the CFTC as a DCO; the Fed under Title VIII as a SIFMUthe cycle novation the same day; premiums and margin by the morning deadline; exercise by exception at the Friday close; the stock on T+1
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OCC is the horizontal model the futures market never adopted: sixteen exchanges compete for the trades and one user-owned clearing house novates them all, so an option bought on one exchange can be sold on another. Its own mechanics are the exercise, assigned at random, and the stock that then settles through NSCC like any trade.
The horizontal model: the SEC’s 1970s decision that the listed options would clear at one clearing house made the options fungible across exchanges and let new exchanges compete for the order flow without building a clearing house; the equity market has the same structure with NSCC; the futures market kept the vertical silos under the CFTC, so a CME contract and an ICE contract are different products even when they are economically the same.
STANS: OCC’s margin model since 2006 simulates thousands of scenarios of the underlyings’ prices from their historical distributions with the correlations, reprices every option in the portfolio on each path and takes the expected shortfall of the worst 1% as the margin, with the add-ons for the concentration and the liquidity; the stock and futures hedges lodged with OCC reduce it; the model replaced the earlier TIMS and is reviewed by the SEC.
Exercise by exception: at expiry OCC exercises every option that is in the money by any amount unless the holder instructs otherwise (the automatic exercise), so a holder must act to avoid being exercised into a stock position over a weekend; the daily expiries of the index options multiplied the exercise cycles, and the cash-settled index options avoid the stock delivery entirely.
The clearing fund and OCC’s capital: the clearing fund is the members’ prefunded contribution to the waterfall, sized monthly to the two largest members’ default under stress; OCC’s own capital and its skin in the game were the subject of the SEC’s review of its capital plan (the 2015 plan was set aside by the court in 2017 and replaced in 2019), the case that defined what a user-owned clearing agency must hold of its own.
The Swap Execution Facilities: the RFQ to Three Dealers, the Trade to the SDR and the Clearing House Within Seconds
An asset manager’s SOFR swap on a swap execution facility: the request for quote to at least three dealers with the pre-trade credit check at the clearing member, the dealers’ responses beside the order book and the interdealer SEFs, the execution with the SEF’s confirmation as the legal record, the real-time report to the swap data repository and the submission to LCH or CME within seconds with the void-ab-initio treatment of a rejection, the clearing member’s client clearing agreement, and the CFTC’s SEF rules with the made-available-to-trade list.
Worked example, illustrative:owner Tradeweb (listed, LSEG-controlled), Bloomberg (private), the interdealer brokers Tradition, BGC and TP ICAP for the dealer-to-dealer SEFshandles the standardized interest rate swaps and the index CDS the CFTC made available to trade; USD 1,500,000,000,000 a day across the SEFs, illustrativemembers the swap dealers quoting; the buy side as participants under impartial access; the FCMs as the clearing memberslinks LCH SwapClear and CME as the clearing houses; the swap data repositories for the real-time tape and the records; Markitwire as the other trade sourceoverseen by the CFTC under Part 37, with the NFA doing the surveillance; the SEC for the security-based SEFsthe cycle RFQ and execution in seconds; the SDR in real time; the CCP within seconds; the clearing member’s margin the next morning
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A SEF is where a swap stops being a phone call: three dealers quote, one wins, the venue confirms, the tape sees it in real time and the clearing house has it within seconds. The mechanics are those of a futures exchange applied to a bilateral product, which is what the Dodd-Frank Act intended.
The SEF rules: Part 37 of the CFTC’s regulations (2013) requires a SEF to offer an order book, to let the participants request quotes from at least three dealers for the required transactions, to give impartial access, to report in real time and to self-regulate its market with the NFA’s help; the made-available-to-trade process lets a SEF designate the swaps that must trade on SEFs, which the CFTC reviews; the 2020 amendments eased the execution methods and the block trade rules.
Tradeweb and Bloomberg: Tradeweb (founded 1996 by the dealers, now listed with LSEG as the controlling shareholder) and Bloomberg’s SEF are the buy-side venues for the rates swaps, the credit index and the government bonds, with the request-for-quote protocol the buy side prefers; the interdealer brokers (TP ICAP, BGC, Tradition) run the dealer-to-dealer SEFs with the voice-assisted protocols; the same firms run the MTFs and OTFs in London and Amsterdam.
The swap data repositories: DTCC’s DDR, ICE Trade Vault and CME’s repository receive every swap’s terms and lifecycle events from the SEFs, the clearing houses and the counterparties under the CFTC’s Parts 43 and 45 (the real-time public tape and the regulatory reporting), rebuilt in 2022 on the global data standards; the SDR data is what the CFTC sees of the swap market.
Void ab initio: a swap executed on a SEF and rejected by the clearing house (for a credit limit or an eligibility reason) is void from the start under the CFTC’s rules, so neither party holds a bilateral swap it did not intend; the pre-trade credit check at the clearing member is what makes the rejections rare; the SEFs and the clearing houses run the straight-through processing within the ten-second standard.
MarketAxess, Tradeweb and BrokerTec: RFQ and All-to-All for Credit, the Treasury Order Book, TRACE
A corporate bond sale and the Treasury market through the electronic bond venues: the request for quote, the all-to-all inquiry and the portfolio trade on MarketAxess and Tradeweb, the responses against the composite price and the dealers’ algorithms, the Treasury interdealer order book on BrokerTec with the principal trading firms and the dealer-to-client streams, the trades to FICC and Fedwire Securities for the Treasuries and to DTC for the corporates, the one-minute TRACE reports with the capped sizes, and the SEC’s regulation of the platforms as ATSs and broker-dealers with the Treasury market reforms of 2026.
Worked example, illustrative:owner MarketAxess (listed), Tradeweb (listed, LSEG-controlled), BrokerTec (CME Group); Bloomberg beside themhandles US corporate and emerging market bonds by RFQ, all-to-all and portfolio trade; the Treasury interdealer order book and the dealer streams; USD 900,000,000,000 of Treasuries a day across the market, illustrativemembers the dealers and the principal trading firms as liquidity providers; the asset managers, insurers and funds as participantslinks FICC and Fedwire Securities for the Treasuries; DTC for the corporates; TRACE for the tape; the matching servicesoverseen by the SEC as ATSs and broker-dealers, with FINRA as the SRO; the Treasury and the Fed on the Treasury market structurethe cycle RFQ in minutes; the Treasury book in microseconds; TRACE within one minute; FICC and DTC on T+1
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The bond market went electronic one protocol at a time: the request for quote first, then the all-to-all and the portfolio trade for credit, and an order book for the on-the-run Treasuries where the trading firms now match the banks. The venues are broker-dealers under the SEC, and what they feed is FICC, DTC and the TRACE tape.
MarketAxess: founded in 2000 by the dealers and J.P. Morgan’s Rick McVey, the largest electronic venue for US corporate bonds with the request-for-quote protocol, Open Trading (all-to-all since 2012, where the buy side provides liquidity to the buy side) and the portfolio trading since 2019; its CP+ composite price and its TRACE-based data are products of their own; Tradeweb competes in credit from its rates base and leads in the portfolio trades.
The Treasury market structure: the on-the-run Treasuries trade in an interdealer market that is now an order book (BrokerTec, and Fenics UST, Dealerweb) where the principal trading firms are half the volume, and a dealer-to-client market by RFQ and streaming (Tradeweb, Bloomberg); the Treasury, the Fed, the SEC and the CFTC’s inter-agency working group drove the reforms after the 2014 flash rally and the March 2020 dash for cash: the clearing mandate, the dealer registration of the trading firms, the transparency.
TRACE: FINRA’s Trade Reporting and Compliance Engine (2002) receives the dealers’ reports of every corporate, agency and (since 2017) Treasury bond trade and disseminates the corporate trades with the price and the capped size, which gave the corporate bond market a tape and the electronic platforms their reference prices; the reporting window shrank to one minute in 2025 for most trades.
Venues, not FMIs: the bond platforms are broker-dealers and alternative trading systems under the SEC and FINRA, not exchanges or clearing agencies, so they carry no settlement risk and hold no margin; the clearing and settlement they hand to FICC, DTC and Fedwire is where the infrastructure proper begins; the Treasury clearing mandate ties the platforms to FICC through the dealers’ access models from December 2026.
NSCC: Trade Capture, the Guarantee, Continuous Net Settlement and the Clearing Fund
The National Securities Clearing Corporation’s cycle: the locked-in trades from the exchanges, the ATSs and the trade reporting facilities and the compared OTC trades captured through the day, the guarantee from the moment of capture backed by the clearing fund computed daily on the unsettled portfolio, the continuous net settlement that turns the day’s trades into one position per security per member for T+1, the settlement through DTC with the fails carried forward, the member’s management of its clearing fund and CNS exposure, a member default handled by liquidation and the loss allocation, and the SEC’s covered clearing agency standards with the SIFMU designation.
Worked example, illustrative:owner DTCC, owned by its users (the banks, broker-dealers and the exchanges); NSCC formed in 1976 from the exchanges’ clearing corporationshandles US equities, corporate and municipal bonds, ETFs, unit investment trusts; USD 2,000,000,000,000 of trades a day, 1,000,000,000 transactions a year, illustrativemembers the clearing broker-dealers and the self-clearing banks; the introducing brokers and the investors behind themlinks DTC for the settlement of the net positions; the settlement banks and the Fed for the cash; the sixteen exchanges, the ATSs and FINRA’s TRFs as the trade sourcesoverseen by the SEC as a covered clearing agency; the Fed under Title VIII as a SIFMUthe cycle capture through the day; the clearing fund by 10:00 ET; CNS overnight; settlement at DTC on T+1
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NSCC takes every equity trade in the country the moment it is done, guarantees it, and turns a billion transactions a year into one net position per security per member settling the next day. The clearing fund is the price of the guarantee, and the retail brokers learned its arithmetic in January 2021.
DTCC: the Depository Trust and Clearing Corporation, formed in 1999 as the holding company of DTC and NSCC, with FICC (2003) and the data and processing subsidiaries (DDR, ITP, the GTR); owned by its users (the banks, the broker-dealers, the exchanges) with a board of their representatives, run as a utility at cost with the fees rebated; the three clearing agencies are each designated systemically important FMUs.
CNS: the continuous net settlement system nets each member’s obligations in each security into one position carried from day to day, so that a fail to deliver on T+1 becomes part of the next day’s net position rather than a separate failed trade; the netting removes 98% or more of the gross value from settlement, and the trades the venues lock in need no comparison at NSCC.
The clearing fund: each member’s required deposit is computed daily by NSCC’s risk model on its unsettled portfolio (a value-at-risk charge at a 99% confidence over the settlement period, a mark-to-market charge, a liquidity charge for the positions that would be hard to liquidate, the special charges in volatile markets), collected in cash and Treasuries; the January 2021 calls on the retail brokers (Robinhood’s USD 3,000,000,000 call) led the SEC to the T+1 rule, which cut the unsettled period in half.
T+1: the SEC’s 2023 rule moved the US settlement cycle from T+2 to T+1 on May 28, 2024 (Canada and Mexico the day before), cutting the margin NSCC holds by about a third and compressing the allocation, confirmation and affirmation to the trade date (the 21:00 ET affirmation cutoff); the UK and the EU follow in October 2027; T+0 is the next debate.
DTC: the Depository, the Settlement Day on T+1, the Night and Day Cycles, the End-of-Day Cash Through the Fed
The Depository Trust Company’s settlement day: the securities held in book entry under Cede & Co., the instructions for T+1 from NSCC’s CNS, the affirmed institutional deliveries and the free movements, the night cycle batch at 20:30 on T under the net debit caps and the collateral controls, the day cycle’s real-time deliveries with the recycling and the deadlines, the end-of-day cash settlement in central bank money through the settling banks and the Fed’s National Settlement Service, the asset services for dividends, corporate actions and the issuers, and the oversight by the SEC, the NYDFS and the Fed.
Worked example, illustrative:owner DTCC, owned by its users; DTC founded in 1973 to immobilize the certificates after the paperwork crisishandles book-entry custody and settlement of US equities, corporate and municipal bonds, money market instruments; 1,400,000 issues, USD 90,000,000,000,000 in custody, USD 2,500,000,000,000 settled a day, illustrativemembers the participants (banks, broker-dealers, custodians); the beneficial owners and the issuers behind themlinks NSCC for the netted equity deliveries; the settling banks and the Fed’s NSS for the cash; the matching services for the institutional affirmationsoverseen by the SEC as a covered clearing agency; the NYDFS as a trust company; the Fed as a member bank and under Title VIIIthe cycle affirmation by 21:00 ET on T; the night cycle from 20:30; the day cycle to 15:10; the cash through the NSS by 16:30 on T+1
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DTC is the ledger: every US share and bond is a book entry under one nominee, and a trade settles as a line moving between two participants, batched at night and streamed by day, with the cash settled once in central bank money at the close. The dividends and the corporate actions come down the same pipe.
Immobilization and Cede & Co.: DTC was created in 1973 to stop the physical movement of certificates that had choked Wall Street in the late 1960s; the certificates are held in its vault or dematerialized, registered to its nominee Cede & Co., and ownership moves by book entry between the participants; the beneficial owners hold through the participants (the street name), and the issuers reach them through the participant lists and the proxy agents.
The risk controls: DTC settles securities deliveries in real time and the cash once at the end of the day, so it manages the intraday exposure with the net debit cap (the maximum net cash debit a participant may run, backed by DTC’s liquidity resources) and the collateral monitor (the securities received must cover the net debit); a delivery that would breach either recycles until the participant’s position allows it.
The NSS and the settling banks: the end-of-day cash settles through the Fed’s National Settlement Service, in which DTC submits one file of the net debits and credits of its participants’ settling banks and the Fed moves the balances between their reserve accounts at once; NSCC’s settlement is netted with DTC’s into one figure per participant under the cross-guaranty agreement between the two; the settlement is final in central bank money.
Asset services: the depository is the issuers’ single point of contact for the payments and the corporate actions on the securities it holds: the paying agents pay DTC, DTC pays the participants, the participants pay the owners; the corporate actions are announced, elected and processed through DTC’s systems on ISO 20022 messages; the underwritings close into the depository with the new issue delivered to the underwriters’ accounts against the payment to the issuer.
FICC GSD: Treasuries and Repo From Comparison to Netting and DVP on Fedwire, the Sponsored Service and the Clearing Mandate
The Government Securities Division of FICC: the cash Treasury and repo trades submitted from the interdealer brokers, the dealers and the tri-party agent and compared or locked in, the clearing fund on the net positions with the capped contingent liquidity facility, the overnight netting into one position per CUSIP per settlement date, the delivery-versus-payment settlement on Fedwire Securities through the clearing banks and the GCF repo on the tri-party platform, the sponsored service and the agent clearing that bring the buy side in, the Treasury clearing mandate of December 2026 and June 2027, and the SEC’s and the Fed’s oversight of the Treasury market’s central counterparty.
Worked example, illustrative:owner DTCC; the Fixed Income Clearing Corporation formed in 2003 from the Government Securities Clearing Corporation (1986) and the MBS Clearing Corporationhandles US Treasury and agency cash trades, repo and reverse repo, GCF repo; USD 8,000,000,000,000 a day, illustrativemembers the netting members (dealers, banks); the sponsored members (money funds, hedge funds, asset managers) through their sponsors; the agent-cleared clientslinks Fedwire Securities and the clearing banks (BNY, JPMorgan) for DVP; BNY’s tri-party platform for GCF; BrokerTec and the dealer venues as trade sourcesoverseen by the SEC as a covered clearing agency; the Fed under Title VIII; the Treasury market regulators on the mandatethe cycle comparison through the day; the clearing fund by the morning deadline; netting overnight; DVP on the settlement date on Fedwire
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FICC turns the Treasury market’s trillions of gross obligations into net positions that settle once on Fedwire, and the netting is the balance sheet the dealers clear for. The sponsored service brings the funds in behind their dealers, and the mandate of 2026 and 2027 brings in the rest of the market.
The Treasury clearing mandate: the SEC’s rule of December 2023 (Rule 17Ad-22(e)(18)(iv)) requires the covered clearing agencies for Treasuries to require their direct participants to clear the eligible secondary market transactions: the cash trades with the interdealer brokers and the registered dealers from December 31, 2026 and the repo and reverse repo from June 30, 2027, after the one-year extension of February 2025; the rule also requires the segregation of the indirect participants’ margin and the access on fair terms (the done-away clearing).
The access models: a buy-side firm reaches FICC through the sponsored service (the sponsoring member guarantees and margins its sponsored clients, who are FICC members in a limited sense), the agent clearing service (the agent clears for its customers under the futures-style model), the prime broker model or a direct membership; the mandate’s done-away rule lets a client clear a trade executed with one dealer through another, which the dealers and the clients are still building.
GCF repo: the general collateral finance repo lets the dealers borrow and lend cash against general collateral (Treasuries, agencies, MBS by basket) anonymously through the interdealer brokers, with FICC as the counterparty and the settlement on BNY’s tri-party platform without the securities moving on Fedwire; the netted GCF positions are a large part of the dealers’ overnight funding and of FICC’s daily activity.
The CCLF: FICC’s capped contingent liquidity facility obliges the netting members, in proportion to their activity, to enter repos with FICC in a member’s default so that FICC can fund the settlement of the defaulter’s positions, the liquidity resource the SEC’s standards require a Treasury CCP to hold in an amount it could not raise elsewhere; the members’ commitments are a cost of clearing the market’s size.
FICC MBSD: the TBA Market From the Trade to the Class Date, Pool Netting and EPN, Settlement on Fedwire
The Mortgage-Backed Securities Division of FICC: the to-be-announced and specified pool trades submitted and compared, the clearing fund and the mark-to-market on forward positions, the netting by the SIFMA class dates into one position per product per settlement month, the pool notification through EPN two business days before settlement with the pool netting and the good delivery rules, the delivery-versus-payment settlement of the agency pools on Fedwire Securities through the clearing banks with the dollar rolls keeping the positions forward, and the oversight by the SEC with the SIFMA conventions and the agencies’ guarantees behind.
Worked example, illustrative:owner DTCC; the MBS Clearing Corporation of 1979 merged into FICC in 2003handles TBA and specified pool trades in Fannie Mae, Freddie Mac and Ginnie Mae MBS; USD 300,000,000,000 a day, illustrativemembers the dealers, the banks and the mortgage originators as netting members; the asset managers and the lenders behind themlinks EPN for the pool notification; Fedwire Securities and the clearing banks for the DVP settlement; the agencies for the poolsoverseen by the SEC as a covered clearing agency; the Fed under Title VIII; SIFMA’s conventions for the marketthe cycle comparison on T; mark-to-market daily; netting by class date; EPN at 48 hours; settlement on the class date
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The TBA market sells mortgage pools that do not yet exist, by coupon and month, and FICC is what makes a forward market in them safe: the trades net by class date, the pools are named two days before, and the delivery settles on Fedwire. The originators hedge their pipelines in it, and the Fed owns a quarter of what it clears.
The TBA market: the agency MBS trade mainly as to-be-announced contracts (the agency, the coupon, the term, the face, the settlement month, the pools unnamed) because the generic pools are fungible under the agencies’ guarantees and the SIFMA good delivery rules; the forward settlement lets the mortgage lenders sell the loans they are about to originate, which is how the US 30-year fixed mortgage is funded; the specified pools trade separately for the investors who want particular characteristics.
The class dates: SIFMA sets one settlement date a month for each class of TBA (A, B, C, D) and the 48-hour notification day before it; the dollar roll (selling the front month and buying the next) is how the investors stay long without taking delivery and how the dealers fund their pools; the Fed’s MBS purchases and sales run through the same market and the same clearing.
EPN: the Electronic Pool Notification service through which the sellers notify the buyers of the pools they will deliver (the pool numbers, the faces, the factors) within the SIFMA variance, replacing the faxes of the 1990s; FICC’s pool netting then allocates the pools across the netted positions so that each buyer receives pools against its net position rather than against each trade.
The uniform MBS: since June 2019 Fannie Mae and Freddie Mac issue a single uniform MBS through the common securitization platform, making their pools fungible in one TBA contract and ending the Freddie discount; Ginnie Mae’s pools (government-insured loans) stay in their own classes; the agencies’ conservatorship and the guarantee behind the pools are the credit the TBA market rests on.
DTCC Data Repository and ITP: the Swap Reporting, the Public Tape, the Trade Matching on CTM and the 21:00 Affirmation
DTCC’s data and processing services: the swaps reported to the DDR by the dealers, the SEFs and the clearing houses with their lifecycle and valuations on the global identifiers, the regulators’ views and the real-time public tape, the institutional trades matched and affirmed on CTM with the standing settlement instructions from ALERT, the affirmed trades flowing to DTC and the custodians by the 21:00 ET cutoff T+1 made the rule, the Global Trade Repository, the LEI role and the Trade Information Warehouse, and the oversight of the repository by the CFTC and the SEC.
Worked example, illustrative:owner DTCC subsidiaries: DTCC Data Repository (U.S.) and its affiliates abroad; ITP (the Omgeo business acquired in 2013) for CTM and ALERThandles the reporting of the US swap market (50,000,000 open positions) and the matching of 25,000,000 institutional trades a month across 50 markets, illustrativemembers the dealers, the SEFs and the CCPs as reporting parties; the investment managers, the brokers and the custodians as ITP userslinks DTC and the custodians for the affirmed trades; the regulators and the public tape for the swap data; the GTR for the foreign regimesoverseen by the CFTC and the SEC for the repository; the SEC and the industry on the affirmation deadlinethe cycle swap reports in real time; matching in real time; affirmation by 21:00 ET on T; the valuations daily
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Two services that move nothing and record everything: the repository where every swap is reported and the regulators read the market, and the matching utility where the buy side and the brokers agree each institutional trade before it goes to the depository. T+1 turned the second into a 21:00 deadline.
The swap data repositories: the Dodd-Frank Act required every swap to be reported to a registered repository; DTCC’s DDR, ICE Trade Vault and CME’s repository are the CFTC-registered SDRs, DDR and ICE the SEC-registered ones for the security-based swaps; the CFTC’s 2020 rewrite of Parts 43, 45 and 49 aligned the data with the global critical data elements, the UTI and the UPI from 2022 to 2024, and the EU, the UK and the other regimes did the same.
CTM and ALERT: the central trade manager matches the allocations and the confirmations of the institutional trades (equities, fixed income, repos) in real time with the exception management, and ALERT holds the standing settlement instructions of the buy side and the custodians so that the matched trade carries the right accounts; the Omgeo business (a DTCC and Thomson Reuters venture of 2001) became DTCC’s ITP in 2013; the match-to-instruct workflow feeds DTC directly.
The affirmation deadline: the SEC’s T+1 rule requires the broker-dealers to complete the allocations, confirmations and affirmations as soon as technologically practicable and no later than the end of the trade date, which the industry set at 21:00 ET; the affirmation rate at the cutoff became the market’s T+1 health metric, and the managers who could not affirm in time moved to the central matching and the custodians’ cutoffs tightened.
The Trade Information Warehouse: DTCC’s record of the credit derivatives market since 2006, holding the gold copy of the CDS contracts and calculating the payments and the credit event settlements for the parties and the clearing houses; the warehouse made the CDS market auditable in 2008 and was rebuilt on a new platform in 2023 after a blockchain attempt was abandoned.
Fedwire Funds: the RTGS Day From 21:00 to 19:00, the Master Accounts, the Daylight Overdraft and the FMIs Settling Through It
The Fed’s real-time gross settlement system: a corporate wire ordered through the bank, formatted in ISO 20022 and sent over FedLine, settled on the master accounts at once or against a daylight overdraft under the payment system risk policy, credited to the receiving bank final and irrevocable, the other infrastructures (CHIPS, DTC and NSCC through the NSS, CLS, the CCPs) funding and settling through it, the end of the day with the cutoffs and the overnight balances at IORB, and the Fed as both the operator under Regulation J and the overseer.
Worked example, illustrative:owner the Federal Reserve Banks, operated under the Board’s Regulation J; priced at cost under the Monetary Control Acthandles dollar payments in central bank money, final on processing; 750,000 a day worth USD 4,500,000,000,000, illustrativemembers the banks and the foreign branches with master accounts; the designated FMUs with accounts since Title VIII; the Treasurylinks CHIPS for the prefunding and the release; DTC and NSCC through the NSS; CLS through its Fed account; the CCPs’ settlement banksoverseen by the Federal Reserve Board, as the operator’s own overseer under the PFMIthe day 21:00 ET open; 18:00 customer cutoff; 18:45 bank cutoff; 19:00 close; ISO 20022 since July 2025
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Every dollar that matters ends its day as a book entry on a master account at the Fed, moved by Fedwire and final the moment it moves. The daylight overdraft is the Fed lending the market its own day, and the 19:00 close is when it wants it back.
RTGS: a real-time gross settlement system settles each payment individually and finally in central bank money as it arrives, with no netting and no settlement risk between the participants, at the cost of the liquidity each payment needs; Fedwire (1918 by telegraph, electronic since the 1970s) is the model the other central banks’ systems (T2, CHAPS, Lynx) follow, each with its own way of supplying the intraday liquidity.
The payment system risk policy: the Board’s policy on the daylight overdrafts lets a bank run a negative balance during the day up to its net debit cap (a multiple of its capital set by its self-assessment), free up to the value of the collateral it has pledged and at a fee of 50 basis points annualized on the uncollateralized part; the overdrafts must be repaid by the close; the policy was tightened after the 2008 crisis and relaxed with the collateralized free capacity.
ISO 20022: Fedwire Funds moved to the ISO 20022 message format on July 14, 2025 (after a delay from March), joining CHIPS (April 2024), T2 (March 2023) and CHAPS (June 2023) on the common standard with the richer structured data (the names, the addresses, the purpose codes) that the sanctions screening and the reconciliation use; the proprietary format of the past fifty years was retired.
The expanded hours: Fedwire’s day grew to 22 hours in 2021 (21:00 to 19:00 ET) to cover the Asian and European business days, and the Board has proposed to move toward 22 hours seven days a week by 2027, in step with FedNow’s continuous operation and the CHIPS extension; the end-of-day close remains the moment the banks must be square and the overnight balances are struck.
Fedwire Securities: the Book-Entry Treasuries, Delivery Versus Payment at the Fed, the Repo Market and the Treasury’s Issuance
The Fed’s book-entry securities system: the Treasuries and agency securities held on the participants’ accounts for the market, a Treasury trade settled by delivery versus payment with the securities and the cash moving together on the Fed’s books, the receiver’s turnaround and the day’s deliveries, the repo market settling on the system and on the tri-party platform beside it, the Treasury’s auctions, coupons and redemptions run by the Fed as fiscal agent, and the Fed, the Treasury and the Board’s oversight of the depository of the government’s debt.
Worked example, illustrative:owner the Federal Reserve Banks as fiscal agent of the Treasury, under the Treasury’s book-entry regulations and the Board’s policieshandles US Treasuries, agency debt and agency MBS in book entry; USD 30,000,000,000,000 of marketable Treasuries; 100,000 deliveries a day worth USD 3,000,000,000,000, illustrativemembers the banks and the clearing banks (BNY, JPMorgan) with securities accounts; the dealers, funds and custodians behind themlinks Fedwire Funds for the cash leg; FICC for the netted deliveries and the GCF repo; BNY’s tri-party platform; the Treasury’s auctionsoverseen by the Federal Reserve Board under the PFMI; the Treasury as issuer and rule-maker for the book-entry securitiesthe day deliveries 08:30 to 15:15 ET; reversals to 15:30; the cash on Fedwire Funds; the auctions settle on their dates
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The Treasury exists as a line on the Fed’s books, and a Treasury trade settles when the Fed moves the line and the cash in one step. FICC nets what the dealers owe each other before it gets there, the tri-party platform holds the repo collateral beside it, and the government issues and pays through the same accounts.
Book-entry Treasuries: the Treasury stopped issuing paper certificates for the marketable debt in 1986; every Treasury is a book entry on Fedwire Securities held by a participant for itself or its customers under the Treasury’s TRADES regulations, which set the tiered custody (the Fed to the participant, the participant to the customer) and the finality; the agency securities joined under the agencies’ agreements with the Fed.
DVP model 1: the CPMI’s classification of delivery versus payment: model 1 settles the securities and the cash gross and simultaneously per transaction (Fedwire Securities, T2S), model 2 the securities gross and the cash net at the end (DTC’s day), model 3 both net; Fedwire’s model is the safest and the most liquidity-intensive, which the daylight overdraft and the clearing banks’ credit supply.
The clearing banks: the dealers and the funds reach Fedwire Securities through two clearing banks, BNY and JPMorgan, which hold the participants’ accounts, extend the intraday credit the turnaround needs and run the tri-party repo platform (BNY alone since 2019); the concentration of the Treasury settlement in two banks is a structural risk the Treasury market’s regulators have studied since the 2008 crisis and the tri-party reforms of 2010 to 2015.
The tri-party platform: in a tri-party repo the cash lender and the dealer settle through BNY, which allocates the dealer’s securities to the lender’s account inside its own books against the cash, values and marks the collateral and unwinds the repo in the morning; the Fed’s overnight reverse repo facility with the money funds and the GCF repo among the dealers run on it; the reforms after 2008 ended the intraday unwind that had exposed BNY and JPMorgan to the dealers all day.
CHIPS: the Banks’ Dollar Clearing House, Prefunded Balances, the Netting Algorithm and Finality on Release
The Clearing House Interbank Payments System: the participants’ prefunding of their opening positions at CHIPS’s Fed account by 09:00, a correspondent’s dollar payment for a European bank’s customer in ISO 20022, the queue and the netting algorithm releasing the payments by bilateral and multilateral offsets within the balances, the finality on release backed by the cash at the Fed, the end of the day with the closing positions and the release of the balances by Fedwire, and the Fed’s oversight of a bank-owned systemically important utility that complements Fedwire.
Worked example, illustrative:owner The Clearing House Payments Company, owned by the largest US and foreign banks; CHIPS since 1970handles large-value dollar payments, mostly cross-border and correspondent; USD 2,000,000,000,000 a day on a few billion of prefunding, illustrativemembers about 40 participants, the large US banks and the US branches and subsidiaries of the foreign banks; the correspondents and the corporates behind themlinks Fedwire and CHIPS’s account at the New York Fed for the prefunding and the end-of-day payoutoverseen by the Federal Reserve Board under the PFMI; a systemically important FMU since 2012the day the queue from 21:00; prefunding by 09:00; release through the day; the queue closes at 17:00; the balances paid out by Fedwire
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CHIPS settles two trillion dollars a day on a few billion of cash by finding the payments that cancel each other out, and makes each one final when it finds them. It is the banks’ own system on top of the Fed’s, and the way most of the world’s dollars come through New York.
The Clearing House: the New York Clearing House Association of 1853, where the banks’ clerks exchanged checks, became The Clearing House Payments Company, owned by the largest banks, operating CHIPS (1970), the EPN ACH network and the RTP instant payments system (2017), and the Clearing House Association as the banks’ policy voice; CHIPS moved to the prefunded, continuously final model in 2001.
Prefunding and the algorithm: CHIPS holds no credit exposure because it releases a payment only when the sender’s balance (plus the offsetting payments) covers it; the balance-release algorithm searches the queue for bilateral and multilateral offsets continuously, so the liquidity efficiency is high (each dollar of prefunding settles hundreds of dollars of payments) at the cost of the queue, which Fedwire does not have.
Correspondent banking: most of the world’s dollar payments between non-US parties settle through correspondent accounts at the banks in New York, and the correspondents clear among themselves on CHIPS; the universal identification numbers CHIPS assigns to the account holders let the system match the beneficiaries; the OFAC screening at each correspondent is where the US sanctions reach the world’s dollar payments.
CHIPS and Fedwire: the two large-value systems coexist with different models (CHIPS netting on prefunded balances, Fedwire gross on the master accounts) and different flows (CHIPS the cross-border and the correspondent payments, Fedwire the domestic, the FMI settlements and the Fed’s own); a bank chooses by cost, finality needs and counterparties, and the FMIs settle on Fedwire; both moved to ISO 20022 (CHIPS in 2024, Fedwire in 2025).
Fedwire, CHIPS and the Retail Rails›FedNow, RTP and ACH
FedNow, RTP and ACH: the Instant Rails in Seconds Around the Clock, the Batch Rail in Windows
The retail payment rails: an instant payment on a Sunday evening sent as an ISO 20022 credit transfer to FedNow or RTP, settled in seconds on the Fed’s master accounts or the prefunded joint account with the payee credited at once and the banks managing their liquidity around the clock, and an ACH payroll batch through the ODFI to FedACH or EPN, sorted, delivered in the windows and settled at the Fed through the National Settlement Service with the same-day windows, under the Fed’s, The Clearing House’s and Nacha’s rules.
Worked example, illustrative:owner FedNow and FedACH by the Federal Reserve Banks; RTP and EPN by The Clearing House; the ACH rules by Nachahandles instant credit transfers up to USD 1,000,000 (FedNow) and USD 10,000,000 (RTP), 1,000,000 a day; ACH credits and debits, 35,000,000,000 a year, illustrativemembers the banks and credit unions as participants (FedNow reaching most of them, RTP the larger ones); the ODFIs and RDFIs on ACH; the payers and payees behindlinks the master accounts at the Fed for FedNow and FedACH; RTP’s joint account at the New York Fed; the NSS for EPN’s settlement; Fedwire for the fundingoverseen by the Federal Reserve Board for all; Nacha for the ACH rules; the CFPB and Regulation E on the consumer sidethe cycle instant: seconds, 24 hours a day; ACH: the processing windows and three same-day windows
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The US got its instant rails late and in duplicate: the Fed’s and the banks’, both settling in seconds on accounts at the Fed, around the clock, while the ACH batch that moves the country’s payroll settles in windows the way it has since the 1970s. The banks’ treasuries now manage liquidity on a Sunday night.
FedNow: the Fed’s instant payment service, launched in July 2023 after the Faster Payments Task Force of 2015 to 2017, settles each payment gross and final on the participants’ master accounts 24 hours a day, every day, with the liquidity management transfers that let the banks move reserves between themselves outside Fedwire’s hours; the participation grew to over a thousand banks by 2025, with the transaction limit raised to USD 1,000,000.
RTP: The Clearing House’s real-time payments network, launched in 2017, settles each payment by adjusting the participants’ balances in a joint account at the New York Fed that the participants prefund, final on the adjustment; the larger banks joined first and the reach extends through the core processors to the smaller ones; the request for payment and the message set are the same ISO 20022 family as FedNow’s.
ACH: the automated clearing house network of 1972 processes the batch credits (payroll, benefits, tax refunds, vendor payments) and debits (bill payments, the consumer debits) through two operators, the Fed’s FedACH and The Clearing House’s EPN, which exchange the entries between them; the same-day ACH windows since 2016 cut the settlement from the next day to the same day for most entries; Nacha writes the rules and the banks enforce them on their customers.
What is not here: the card networks (Visa, Mastercard) and the check clearing are payment systems too, but they are private networks and legacy rails rather than the infrastructure this page follows; the Fed’s check services and the cards’ settlement through the banks’ accounts touch the systems above only at the settlement.
CLS: the FX Settlement Day, Pay-Ins Through the RTGS Systems, Payment Versus Payment and the Pay-Outs
The FX settlement system’s day: the trades submitted and matched on T by the settlement members for themselves and their third parties, the pay-in schedule from the multilateral netting of each member’s positions per currency, the pay-ins through Fedwire, T2, CHAPS and the other RTGS systems in the European morning window, the settlement on CLS’s books payment versus payment subject to the three risk tests, the pay-outs of the long positions through the same systems until CLS’s central bank accounts return to zero, the other services with CLSNet and the same-day session, and the Fed’s supervision of an Edge corporation under the cooperative oversight of 18 central banks.
Worked example, illustrative:owner CLS Group Holdings, owned by the settlement member banks; CLS Bank International, an Edge corporation under the Fed, since 2002handles FX spot, forward and swap settlement in 18 currencies; 1,000,000 instructions a day worth USD 7,000,000,000,000, illustrativemembers about 70 settlement members (the large banks) with accounts at CLS; the third parties (banks, funds, corporates) through themlinks the accounts at the 18 central banks; Fedwire, T2, CHAPS, BOJ-NET and the other RTGS systems for the pay-ins and pay-outs; the liquidity providersoverseen by the Federal Reserve as primary supervisor; the CLS Oversight Committee of the 18 central banks; a SIFMU under Title VIIIthe day submission on T; the pay-in schedule the evening before; the window 07:00 to 12:00 CET; settlement 07:00 to 09:00 CET; accounts back to zero by 12:00
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CLS settles the FX market on its own books in a five-hour window when every central bank is awake, paying each leg against the other or not at all, and funds seven trillion dollars of trades with about one percent of it. The Herstatt risk it was built to remove is gone for 18 currencies and alive in the rest.
Herstatt risk: in June 1974 the German authorities closed Bankhaus Herstatt at the end of the German day after it had received the Deutsche mark legs of its FX trades and before it had paid the dollar legs in New York, and its counterparties lost the dollars; the settlement risk of paying one currency before receiving the other, across the time zones, is the risk CLS removed for its currencies by settling both legs at once in a window when every RTGS is open.
Payment versus payment: CLS holds an account at each of the 18 central banks and settles each matched trade by debiting one member’s account in one currency and crediting the other’s in the other currency on its own books simultaneously, final at that moment; the central bank accounts are the liquidity pools the pay-ins fill and the pay-outs drain; the three risk tests keep every member’s position within its limits so that CLS never pays out what has not been paid in.
The 18 currencies: the US dollar, the euro, the yen, sterling, the Swiss franc, the Canadian, Australian, New Zealand, Hong Kong and Singapore dollars, the Danish, Norwegian and Swedish kronor, the Israeli shekel, the Korean won, the Mexican peso, the South African rand and the Hungarian forint; the Chinese renminbi, the Indian rupee, the Brazilian real and the other emerging currencies settle outside CLS, bilaterally or through CLSNet’s netting, and the BIS estimates a third of the FX market still settles with the risk.
The settlement window: the five hours from 07:00 to 12:00 CET are the only time of day when the RTGS systems of all 18 currencies are open at once (the Asia-Pacific systems late in their day, the Americas’ early). That is the reason the FX market’s settlement happens in the European morning and the Fed opened Fedwire at 21:00 ET for the CLS pay-ins; the same-day session for the dollar and the Canadian dollar runs later in the North American day.
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