Markets & FinanceDigital InfrastructureRegulatory Policy
Nasdaq Goes Near 24 Hours in December. The Public Price Feed May Not Run at Night.
Nasdaq's Night Session opens December 6. The SEC wrote a fallback for the tape not being ready four days after publishing the guardrail that assumes it will be.
On Friday, August 14, 2026 the Securities and Exchange Commission published an order that plans for the consolidated tape not being ready when the American stock market moves to 23 hours a day. Release 34-106061 relieves 24X National Exchange of its duty under Rule 602 of Regulation NMS to publish its quotations, and of Section 19(g)(1), the provision that binds an exchange to its own rulebook, but only if the equity data plans miss December 6, 2026. The following Monday Nasdaq issued its operational alert for the December 6 launch, referring in it to the processors it depends on. The order records Nasdaq, Cboe, IEX, SIFMA and Better Markets among those opposing the relief, and paraphrases one commenter warning that it would institutionalize a two-tier data environment. In March 2026 SIFMA had asked the Commission to consider the question more broadly than a single exchange filing allowed. The Commission announced that broader consideration on July 23, 2026, before the order, and set it for September 17, 2026. The judgment here is that the order arrived ahead of the deliberation, and that the remedy it chose, a proprietary feed published at no cost, sets a price inside a market that was already trading.
- December 6 is not Nasdaq's date. It is the compliance date the Commission set for the equity data plans, and it lands roughly six months past the clock the approval originally ran on. 24X's rulebook had set May 27, 2026 as the outer date for the filing that would confirm the tape was ready, and the Commission moved that date to December 27, 2026. Nasdaq's launch and the fallback's trigger are the same event.
- Nasdaq holds both the administrator and the processor role on the UTP tape, where the New York Stock Exchange administers the CTA and CQ tapes and SIAC processes them. The exchange that must be told the tape is ready runs one of the two SIPs that make it ready.
- The order reaches past the rule to the statute. 24X's own rulebook forbids what the exemption permits, and Section 19(g)(1) requires an exchange to comply with its own rules, so relief had to suspend the provision that gives a rulebook its force. No Section 36 precedent for Rule 602 relief was located, and the order cites none.
- The remedy is a price, not a suspension. The first condition requires 24X to publish a proprietary real-time feed carrying the data elements the plans would have carried, at no cost, and the second requires it to post that consolidated data is unavailable for its session.
- The overnight volatility guardrail was published four days earlier. In an order dated August 5, 2026 the Commission approved bands of 20 percent for Overnight Protected Hours running from 9:00 p.m. to 4:00 a.m., without automatic trading pauses, and the participants set the start time by reference to the moment the processors open.
The Rulebook Was Assembled in Public, and Almost Nobody Read It
The rulebook for a 23-hour American equity market was assembled in public over eleven months, in proceedings that almost nobody read. The sequence matters, because the date the fallback turns on is not the date the exchange chose, and the venue relieved of publishing its quotations is not the venue that runs the tape.
- Markets & Finance. The Commission approved Nasdaq's application to extend trading to 23 hours a day, five days a week, on April 10, 2026. The approval was conditional in a specific way the coverage reviewed for this piece did not carry: Nasdaq may build the Night Session but may not open it. The equity data plans must first establish a mechanism to collect, consolidate, process and disseminate quotation and transaction information at all times during the session, must notify the exchange in writing that they are prepared, and Nasdaq must then file a further rule change confirming both its own readiness and theirs. If Nasdaq does not make that filing within eighteen months, it must file to remove the Night Session rules altogether.
- Digital Infrastructure. The plans that run the consolidated tape announced their submission on December 19, 2025, and the Commission gave the formal filing date as January 12, 2026. The plans said the Commission would have up to 300 days; it approved the amendments on June 26, 2026, well inside that window. From December 6 the processors are to run from 9:00 p.m. Sunday to 8:00 p.m. Friday, with a maintenance window from 8:00 to 9:00 p.m. Monday through Thursday. Six industry test events were scheduled between October 2 and December 4, 2026. The clearing leg is already done: the National Securities Clearing Corporation went to 24 by 5 on June 29, 2026, on the target it had set the year before.
- Regulatory Policy. December 6 arrives late against the clock the approval originally set. 24X Rule 1.5(c) had put the outer date at May 27, 2026, and the order records SIFMA noting that the plans' commitment ran roughly six months past what the 24X rules anticipated. Into that gap 24X National Exchange, a venue whose entire product is the overnight session, asked to be let out of the rule requiring an exchange to publish its quotations. The order records eleven letters opposing, among them letters from Nasdaq, Cboe, IEX, SIFMA and Better Markets.
- Markets & Finance. On August 7, 2026, published a week later, the Commission granted the exemption in Release 34-106061, effective January 24, 2027, expiring on the earlier of the plans implementing or July 2, 2027. It declined to make the relief effective before December 6, and said why: the order records several commenters arguing that granting it sooner would remove the plans' incentive to hit their own deadline, and the Commission answered that doing so could potentially lessen that incentive. The delay is deliberate. It is the pressure being kept on.
- Regulatory Policy. The effective date carries a second reason of its own. The Commission set January 24, 2027 because, as the order puts it, market participants typically observe a system freeze in December and January for end-of-year maintenance and could be short on technological and operations personnel during that period. The two reasons do different work. The freeze explains why the relief arms seven weeks after the trigger rather than the morning after it, and incentive preservation explains why it does not arm before December 6 at all. If the plans implement between those two dates, the relief never becomes effective.
The Session Is Advertised as Continuous. For Some Listings It Is Not.
Digital Infrastructure. Corporate actions are processed inside the single hour between the day's sessions, from 8:00 to 9:00 p.m. Eastern. That window is not merely shorter than what those processes had before, which was the whole night. Nasdaq has not proposed to compress the work to fit. It has filed rules that halt the affected security in the hour between 8:00 and 9:00 p.m. on the day before the effective date, hold it halted through the overnight session, and reopen it through the Nasdaq Halt Cross at 8:00 a.m., recovering more processing time than it lost by making the stock untradeable across the whole night. Nine categories are enumerated, running from symbol and CUSIP changes through large dividends, splits, spin-offs, de-SPAC transactions, security-type changes and mergers, and closing with a catch-all for anything Nasdaq judges necessary to keep the market orderly. Every other exchange trading the security would have to halt with it. These rules took effect on filing and become operative on December 6, 2026.
Markets & Finance. The consequence is an inversion worth stating plainly. A listing with a dated, value-changing event is precisely the listing an investor in another time zone would most want to trade overnight, and it is the one the overnight session excludes. The 23-hour market is most available where it is least needed and closed where a price would have carried the most information.
Markets & Finance. The session is narrower in other ways the announcements did not lead with, and smaller than the framing suggests.
- Only Limit Orders, and No Auctions. Only limit orders are permitted in the session, and unpriced orders are not. There is no opening auction and no closing auction, so the two moments of the day that concentrate liquidity into a single print have no counterpart overnight.
- Pegged and Midpoint Types Switched Off. Every pegged and midpoint order type is switched off, because each of them references a The highest bid and lowest offer across all venues at a moment, used as the reference price for execution quality and for several trading rules. that will not exist. That exclusion is not an administrative detail. It removes a category of liquidity provision rather than a category of paperwork.
- The Trade Date Rolls at Nine. One boundary belongs to the calendar rather than the clock. The trade date rolls at 9:00 p.m., not at midnight, so a trade executed between 9:00 p.m. and midnight carries the next day's trade date. That touches settlement under T+1, record dates, the Rule 10b-18 safe harbor for buybacks, and Regulation M. It has not appeared in the coverage reviewed for this piece.
- The Base Is Small and Growing Fast. The order cites MEMX's own analysis recording overnight trading up 305 percent year over year in April 2026 while remaining the lowest volume segment, accounting for less than one percent of total daily volume.
Markets & Finance. That last figure is the shape of the bet. A segment growing that quickly from a base that small has not yet been tested at scale against the liquidity questions raised about it, and December is when the testing starts. The session being extended is, for now, a small one, and the case for extending it rests on what it is expected to become rather than on what it currently is.
A Price of Zero Is Still a Price
When a regulator answers a public utility's delay by requiring one firm to publish for free what the utility would have published, it has not suspended the market for that data. It has set a price of zero in one corner of a market that continues to trade around it.
Markets & Finance. The relief runs to The requirement that an exchange make its quotations available to the consolidated feed while it is open for trading., and the first condition attached to it requires 24X to make publicly available a proprietary real-time feed carrying the quotation elements the UTP and CQ plans would have carried and the last sale elements the UTP and CTA plans would have carried, at no cost. Those plans are the The public feed that carries quotations and trades from every US exchange, so that one official price exists rather than one per venue.. The Commission's stated reason is that a free feed will offset the expense of access and encourage direct users and third-party vendors to acquire and integrate it into their own consolidated products.
Digital Infrastructure. Those products already exist. In February 2026 Webull launched a consolidated overnight feed merging two overnight venues into a single view, offering top of book free and full depth for $4.99 a month. In March 2026 OTC Markets folded the overnight data from its own MOON An off-exchange venue that matches buyers and sellers under lighter obligations than an exchange, including obligations tied to the consolidated feed. and OTC Overnight feeds into its daytime broker-dealer and per-user licensing at no additional charge. Both predate the order by months, and both had already answered the question of what overnight consolidation costs.
Markets & Finance. Nasdaq moved the other way. In a filing released on July 28, 2026 and published on July 31, 2026, it introduced two feeds offering consolidated top of book and depth of book across its own three equity venues, The Nasdaq Stock Market, Nasdaq Texas and Nasdaq PSX, effective on filing, with fees to be proposed in a separate filing. The justification given is that "liquidity may be limited for certain stocks in the overnight session" and that the proposed feeds "will provide investors with a broader view of the market than independent feeds." Consolidated there means across those three venues, not market-wide. The order does not concede the point. It states that 24X proprietary information, even consolidated with other venues, would not be a substitute for SIP data, and that consolidated SIP data is a hallmark of the national market system that should be provided during the hours 24X seeks to trade. Our read is that the exemption did not create a private market for overnight consolidation. It set a price inside one that was already open.
The Commission or FINRA states what a best execution obligation measures against in a session in which a national securities exchange is trading while exempt from publishing its quotations, whether in the roundtable record, in guidance or in a rule proposal. The reference point this analysis says has not been established would then exist, and the gap described here would be a gap in the reading rather than in the rules.
What does a best execution obligation measure against during a session in which the consolidated quotation is not being published?
The Guardrail Starts When the Tape Does
A protection defined by reference to a system opening inherits that system's uncertainty, whether or not the protection itself needs it to function. Where one instrument sets a safeguard's start time by the clock of a second instrument, a delay in the second becomes a question about the first.
Risk & Compliance. In an order dated August 5, 2026 and published on August 10 the Commission approved the twenty-seventh amendment to the limit up limit down plan governing extraordinary market volatility, establishing temporary price band protections for overnight trading. Bands sit 20 percent above and below the higher and lower of two reference prices, the official closing price and the consolidated last round lot sale as of 7:45 p.m. Eastern. Unlike the daytime mechanism, the overnight regime has bands but no automatic trading pauses.
Digital Infrastructure. The participants explained the start time by reference to the The system that collects, consolidates and publishes the consolidated tape. There are two, and the exchanges themselves administer them.. The 9:00 p.m. commencement, they wrote, corresponds to the time at which the processors will open for overnight trading, ensuring the mechanism is operative from the moment activity becomes available through the consolidated market data infrastructure. Four days later, on August 14, 2026, the Commission published an order for the case in which those processors do not open.
Risk & Compliance. The inputs survive that case. Both reference prices are computable without an overnight tape, since the closing price is set in the day session and the 7:45 p.m. consolidated last sale falls while the processors still run to 8:00 p.m. The bands themselves are another matter: Nasdaq's own alert describes them as disseminated via the processors. What the record does not appear to resolve is whether the mechanism operates at all in a session defined by reference to processors that have not opened. That is an open question rather than a demonstrated gap, and it is one worth asking on September 17.
Markets & Finance. The end of the protected session is its own fact. Overnight protection stops at 4:00 a.m., and the participants chose that hour to accommodate the established practice of issuers releasing earnings and other price-sensitive information during pre-market hours. Protection ends where the news conventionally begins.
A record shows that the Commission held a firm readiness commitment from the equity data plans when it signed the order on August 7, 2026, one sufficient to close the December 6 question. The fallback would then be housekeeping, and this piece would have read risk into a closed question. Readiness arriving on the day would not do this, because a risk can be real and still not materialize.
Does the volatility mechanism operate in a session defined by reference to processors that have not opened, and who decides?
The Exemption Had to Reach the Statute
When relief has to suspend the provision that binds a body to its own rules, what is being set aside is not a requirement but the mechanism that makes requirements bind. An exemption written at that level is doing something different from an exemption from a rule.
Regulatory Policy. The relief did not stop at Regulation NMS. The order grants it under section 36(a)(1) of the Exchange Act from Rule 602(a)(1), from Rule 608(c) as applied to section VIII(A) of the UTP Plan and section VI of the CQ Plan, and from section 19(g)(1) of the Exchange Act itself. The last of those is the unusual one. Section 19(g)(1) is the provision requiring a self-regulatory organization to comply with its own rules, and 24X's rulebook forbids the trading the exemption permits. Relief from the rule alone would not have been enough, because the rulebook would still have bound the exchange to it.
Digital Infrastructure. An exchange is a regulator by delegation, and its rulebook is the instrument through which that delegation binds. Suspending Section 19(g)(1) for a defined window therefore reaches past the substance of any single obligation and touches the mechanism that makes an exchange's own rules enforceable against it. The Commission set the window narrowly, effective January 24, 2027 and expiring on the earlier of the plans implementing or July 2, 2027, and attached seven conditions to it.
Regulatory Policy. No Section 36 precedent for relief from the Rule 602 quotation duty was located, and the order cites none, so the fair description is apparently unprecedented rather than unprecedented. What the order does say about its own reach is explicit: the relief runs to 24X "and any other similarly situated registrant that requests and is granted a comparable exemption." The order records Cboe arguing in April that the effectiveness of any such relief should be delayed until other exchanges could obtain their own. Our read is that the instrument, not the venue, is the precedent being set.
A second registrant requests comparable relief and the Commission refuses it on reasoning that confines the order to 24X's own facts. Or the Commission refuses every subsequent request, or the exemption's term runs out with no registrant ever making one. The sentence extending the same treatment to any other similarly situated registrant would then be language rather than market structure.
Which registrant is the next to be similarly situated, and on what reasoning would one be granted and another refused?
The Weave maps a single development across domains and across time. Each row follows one domain from where things stand now through the next eighteen months, and expands for the reasoning behind that trajectory.
- A price set in a near-empty book still becomes the headline number the next morning.
- Concentration flatters the average and hides the tail most issuers actually live in.
- Where the volume forms decides which venue's feed a trading desk cannot afford to skip.
- A compliance process is only as good as the reference price it is measured against.
- Bands without pauses inform a supervisor, but they do not stop the print from landing.
- Two federal filings three days apart rest opposite assumptions on the same data feed.
- Relief had to reach the statute because the venue's own rulebook forbids what it permits.
- The order runs to any similarly situated registrant, so the template outlives one venue.
- A condition compelling free publication is a pricing decision wearing a compliance label.
- Participation arrived at the proceeding that looked like a decision, not the one that made it.
- The examination was already on the calendar when the order granting relief was signed.
- A committee with no buy-side seat in the Commission's list sets the hours the buy side trades in.
- A final test two days from launch leaves no room to find anything that needs rebuilding.
- The layer that finished early is not the layer the August order is worried about.
- Nasdaq holds both administrator and processor roles on the tape it must be told is ready.
- A regulator setting one price at zero is competing inside a market that already trades.
- One route to overnight trading is an exemption; another is a venue class the rule never reached.
- The consolidation function survives the utility's delay, but it survives as a product.
v1 · August 21, 2026The Next Fixed Point Is a Room in Washington
Whether the consolidated quotation stays a public obligation through a 23-hour trading day gets settled in a short run of dated, checkable markers over the next five quarters. Each of them is a document, a test event or a date that either arrives or does not.
- September 17, 2026 (The Next Fixed Point). The Commission holds a public roundtable at its headquarters, 100 F Street NE in Washington, on moving towards 24-hour trading in the US equity markets, covering preparations to support overnight trading, operations and resiliency in a 24-hour market, and the opportunities and challenges of expansion. Submissions go to File Number 4-913. It is the broader consideration SIFMA asked for in March. It was announced on July 23, 2026, two weeks before the exemptive order was signed, and it falls eleven weeks before the session it is considering opens.
- The Question for Counsel. Best execution, order protection and supervision are all written against a national best bid and offer. One venue now holds relief from the duty to contribute quotations to it, and the order extends the same treatment to any other similarly situated registrant that requests and is granted a comparable exemption. The order records Cboe arguing in April that the effectiveness of that relief should be delayed until other exchanges could obtain their own. The template exists. What has not been established is what a best execution obligation measures against when the consolidated quotation is not being published.
- October 2 to December 4, 2026 (The Calendar Already Running). Six industry test events fall between those two dates, the last of them two days before launch across a weekend. Clearing is done: the National Securities Clearing Corporation moved to 24 by 5 on June 29, 2026. The processors are the remaining dependency, and on August 17, 2026 Nasdaq filed SR-NASDAQ-2026-067, designating CQS and UQDF the sole source of quotation data during the Night Session, for the handling, routing and execution of orders and for the regulatory compliance processes attached to those functions, and the Commission noticed the filing on August 20. That filing is a statement about what Nasdaq expects to be available.
- After December 6, 2026 (Three Dates Follow). If the plans are ready, the exemption never activates and expires unused. If they are not, relief becomes effective January 24, 2027 and runs until the earlier of implementation or July 2, 2027. Separately, the rulebook conditions the Night Session on a further filing under Section 19(b), and carries an obligation to take the Night Session rules back out of the book if that filing is not made, on an outside date falling around October 10, 2027. And the arrangement under which the exchanges administer their own consolidated tape is itself expected to end, with an independent administrator anticipated in the second quarter of 2027, a quarter that closes two days before the exemption's own outside expiry.
- The Tell. The resolving signal is whether the overnight quotation duty is written down anywhere by someone other than the venue holding relief from it. If the September 17 record produces a proposal, or a second registrant's request is docketed and decided on stated reasoning, or a best execution measure for an exempt session is named in guidance, then the question acquires an author. If instead the roundtable closes without a proposal, no second request is filed, and December 6 passes with the question unreached, then the terms on which an exchange may trade without quoting were settled by an order nobody had to defend, and they stay settled that way at least until the tape changes hands in the second quarter of 2027.
The consolidated tape is a public thing that almost nobody thinks about, which is most of how it has stayed a public thing. Whether it stays one will not be decided by an exchange opening at nine in the evening, and it will not be decided by the venue that trades while the tape is dark. It will be decided in a committee room, on a date already in the calendar, in a docket that is open, under a file number almost nobody outside this trade has typed.
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Primary sources34
- Securities and Exchange Commission (the instrument)Release 34-106061, Order Granting Temporary Conditional Exemptive Relief to 24X National Exchange LLC: the operative grant, its reach to Rule 602(a)(1), Rule 608(c) and Section 19(g)(1), the December 6, 2026 trigger, the January 24, 2027 effective date and the July 2, 2027 outside expiry (File No. S7-2026-06, 91 FR 52756)Aug 14Primary · The Guardrail Starts When the Tape Does · The Exemption Had to Reach the Statute · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- Securities and Exchange Commission (the same order, Section IV)The seven conditions attached to the relief, recovered complete and unabridged: the free proprietary real-time feed, the website disclosure that consolidated data is unavailable for the session, the Rules 601 and 602 carve-in for the other sessions, delayed trade reporting, quarterly volume data to the Commission, the NSCC precondition, and 24X's own Section 19(b) confirming filingAug 14Primary · A Price of Zero Is Still a Price · The Exemption Had to Reach the Statute · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- Securities and Exchange Commission (the same order)The template sentence, extending the same treatment to any other similarly situated registrant that requests and is granted a comparable exemption, carried together with the order's own status line that as of its date no other national securities exchange had filed to request similar reliefAug 14Primary · The Exemption Had to Reach the Statute · The Next Fixed Point Is a Room in Washington
- Securities and Exchange Commission (the same order, footnote 53)The eleven opposition letters, each named and dated, including the letters the order attributes to Nasdaq, Cboe, IEX, SIFMA and Better Markets, set beside the six supporting letters and the two no-position letters the same order recordsAug 14Primary · The Exemption Had to Reach the Statute · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- Securities and Exchange Commission (the same order)Why the relief is dated January 24, 2027: the Commission's stated understanding that market participants typically observe a system freeze in December and January for end-of-year maintenance and could be short on technological and operations personnelAug 14Primary · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Securities and Exchange Commission (the same order, footnote 16)The clearing dependency cleared by Commission order: approval on May 27, 2026 of rules for the National Securities Clearing Corporation to support extended trading hours, Release 34-105565, 91 FR 32491. Cited for the approval only, never for the go-live dateAug 14Primary · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Securities and Exchange Commission (the same order, footnote 45)The Commission's own source for the size of the overnight market: MEMX Exchange Highlights of May 13, 2026, cited for growth in overnight trading up 305 percent in April 2026 year over year while remaining the lowest volume segment, accounting for less than one percent of total daily volumeAug 14Primary · The Session Is Advertised as Continuous. For Some Listings It Is Not. · The Weave
- Securities and Exchange Commission (the same order)Incentive preservation, in the Commission's own words: the refusal to grant relief before the December 6, 2026 implementation date because doing so could lessen the plans' incentive to meet it, and the grant of relief that would become effective only if the equity data plans miss that dateAug 14Primary · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- Securities and Exchange Commission (the same order)The comparative investor-protection reasoning, that investors are better served by overnight access on a national securities exchange than by being limited to an ATS, carried with the countervailing sentence in the same order that consolidated SIP data is a hallmark of the national market system and that limited vendor consolidation is not a substitute for itAug 14Primary · A Price of Zero Is Still a Price · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Securities and Exchange Commission (the same order, footnote 88)The order records one commenter, C. Zachary Meyers of C. Zachary Meyers PLLC in a letter dated March 25, 2026, arguing that extending similar relief to other exchanges would institutionalize a two-tier data environment. The words are the Commission's paraphrase of that letter; the letter itself has not been readAug 14Primary · A Price of Zero Is Still a Price · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Securities and Exchange Commission (the same order, body and footnote 29)24X Rule 1.5(c) and the deadline the Commission had already moved: Release 34-105497 of May 15, 2026, 91 FR 29241, extended the date for 24X's own rule filing from May 27, 2026 to December 27, 2026, lengthening the original eighteen-month clock to twenty-five monthsAug 14Primary · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Securities and Exchange Commission (the same order, footnote 14)The Operating Committees of the equity data plans, listed participant by participant: twenty-one seats, with affiliates of Nasdaq, the New York Stock Exchange and Cboe holding fourteen of them, no buy-side member appearing in the Commission's list, and 24X itself seated on the committee whose deadline it is being exempted from missingAug 14Primary · The Weave
- Securities and Exchange Commission (via Federal Register)Release 34-105199, Order Approving SR-Nasdaq-2025-109, the 23/5 proposal: the Night Session commencing at 9:00 p.m. and ending at 4:00 a.m., the condition that the exchange shall not commence operation unless the equity data plans have established a mechanism to collect, consolidate, process and disseminate quotation and transaction information at all times during the session, the further Section 19(b) filing the rulebook requires before the session may open, the eighteen-month removal obligation if it is not filed, and the limit-orders-only design. This record establishes the obligation and says nothing about whether it has been dischargedApr 15Primary · The Session Is Advertised as Continuous. For Some Listings It Is Not. · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Securities and Exchange Commission (the same order, footnote 106 and the comment discussion)The exchange the piece turns on: the order records SIFMA raising additional questions and issues for broader consideration outside of the context of a single exchange rule filing, and answers that the Commission is monitoring the developments of extended trading hours. The order's rendering carries one word SIFMA's own letter does notApr 15Primary · The Next Fixed Point Is a Room in Washington
- Securities Industry and Financial Markets Association (the party's own filing, published by the party)Comment letter on SR-NASDAQ-2025-109: SIFMA in its own words raising questions and issues for broader consideration outside the context of a single exchange rule filing, and reading the proposal as confirming that trading will not commence until the SIPs are operable to disseminate consolidated market data during overnight hours. Cited for those two strings only; the letter PDF has not been machine-read and no other quotation is carried from itMar 19Primary · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Securities and Exchange Commission (via Federal Register)Release 34-105596, File No. 4-631, Notice of Filing of the Twenty-Seventh Amendment to the plan addressing extraordinary market volatility, to establish temporary price band protections in overnight trading: the filer, the plan parties including 24X National Exchange, and Overnight Protected Hours running 9:00 p.m. Sunday through Thursday to 4:00 a.m. the next calendar day. Filed May 27, released June 1, published June 4, 2026Jun 4Primary · The Guardrail Starts When the Tape Does
- Securities and Exchange Commission (via Federal Register)Release 34-106042, File No. 4-631, Order Granting Approval of the Twenty-Seventh Amendment: the 9:00 p.m. commencement of the Overnight Protected Hours corresponding to the time at which the Processors will open for overnight trading, the 20 percent bands without automatic trading pauses, the two reference prices of the listing market's official closing price and the consolidated last round lot sale as of 7:45 p.m., the 4:00 a.m. termination so that newly disclosed information can be incorporated into prices, and the Commission's statement that it received no comments on the amendmentAug 10Primary · The Guardrail Starts When the Tape Does · The Weave
- Securities and Exchange Commission (via Federal Register)Release 34-105780 of June 26, 2026, the Extended Hours Amendments to the UTP Plan, 91 FR 40058: the extension of the exclusive SIPs' hours of operation and the December 6, 2026 date from which the participants must comply and enforce compliance. The dates are double-sourced through footnote 16 of Release 34-106061. It states that the Commission 'received no comment letters on the Proposal' and 'received no comments on the Amended Proposal,' both re-confirmed at the document. The companion order for the CTA and CQ Plans is a separate Federal Register document and is cited at its own recordJul 1Primary · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- The Nasdaq Stock Market LLC (member notice)Equity Trader Alert #2026-46, New Trading Hours Effective December 6, 2026: the 9:00 p.m. to 4:00 a.m. session, the trade date rolling at 9:00 p.m. rather than at midnight, the 20 percent bands and their $3.00 and $1.00 minimum widths, the M1 corporate action halt code, and the six user acceptance test dates from October 2 to December 4. The alert carries its own SIP caveat and runs two registers in one breath, engaging with regulators beside will introduce. It does not use the rulebook term Night SessionAug 17Primary · The Session Is Advertised as Continuous. For Some Listings It Is Not. · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- Securities and Exchange Commission (press release 2026-69, read at the release)Announcement of a Roundtable on Preparations for 24-Hour Trading: September 17, 2026, at SEC headquarters, 100 F Street NE, Washington, open to the public and streamed, with submissions under File No. 4-913 and an announced scope covering preparations to support overnight trading, operations and resiliency in a 24-hour market, and opportunities and challenges for expansion. Announced July 23, 2026, which is before the exemptive order, not after itJul 23Primary · The Next Fixed Point Is a Room in Washington · The Weave
- The Nasdaq Stock Market LLC (member notice)Data News #2026-3, Nasdaq Announces Launch of New Plus Market Data Solutions to Support 23/5 Trading: Nasdaq Basic Plus, TotalView Plus and Last Sale Plus, offering a best bid and offer consolidated across Nasdaq's own three venues and not across the market, announced four months before the order and expressly subject to DTCC and SIP readiness. No pricing or fee information is disclosed anywhere in itApr 23Primary · A Price of Zero Is Still a Price · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- Securities and Exchange Commission (via Federal Register)Release 34-105997, Notice of Filing and Immediate Effectiveness of SR-NASDAQ-2026-061, introducing the Nasdaq TotalView Plus and Nasdaq Basic Plus data feeds: consolidated top of book and depth of book across the three Nasdaq equities venues, the filing's own overnight justification that liquidity may be limited for certain stocks in the overnight session, and its statement that fees will be proposed in a separate filing. Release July 28, published July 31, 2026Jul 31Primary · A Price of Zero Is Still a Price · The Weave
- Securities and Exchange Commission (via Federal Register)Release 34-106139, SR-NASDAQ-2026-064, amending Nasdaq Equity 4, Rule 4120 to incorporate provisions relating to the Night Session and the transition between the Day Session and the Night Session. A trading halts and transition filing, effective on filing, and cited here as nothing elseAug 19Primary · The Session Is Advertised as Continuous. For Some Listings It Is Not.
- Nasdaq, Inc. (issuer release, read via a third-party full-text reproduction, not on the issuer's own page)Nasdaq Announces Definitive Agreement to Acquire LeveL Markets, Advancing Nasdaq's Always-On Markets Strategy: the ATS characterization, hundreds of millions of shares daily and more than 2,500 buy-side and sell-side clients, continued operation inside Digital Liquidity Networks under Roland Chai, and the Cohen quotation. A negative check confirms the release does not contain the words overnight, SIP, 24X or night session, and any reading that connects it to the tape is Wiiver's own judgment, not the document'sAug 11Primary · The Weave
- Webull Corporation (issuer release via PR Newswire)Webull Launches Consolidated Market Data Feed for Overnight Trading: a synthetic best bid and offer stitched across two overnight venues, Blue Ocean and Bruce Markets, free at top of book and $4.99 a month for a full order book, live across 11 of its 14 markets. Six months before the order, and a synthetic BBO across two ATSs rather than a consolidated tapeFeb 11Primary · A Price of Zero Is Still a Price · The Weave
- OTC Markets Group (issuer release, read via a third-party full-text reproduction)OTC Markets Group Includes Overnight Market Data in Per-User and Broker-Dealer Enterprise Licensing: MOON ATS and OTC Overnight data folded into the existing daytime broker-dealer enterprise and per-user licenses at no additional charge, five months before the Commission's free-feed condition, alongside standalone non-US licenses at $5,000 and $4,000 a monthMar 31Primary · A Price of Zero Is Still a Price · The Weave
- Financial Industry Regulatory Authority (technical notice)Extension of TRF Operating Hours: trade reporting facility hours moving to 9:00 p.m. Sunday through 8:00 p.m. Friday with a one-hour technical pause between 8:00 and 9:00 p.m. Monday through Thursday, not daily, and FINRA's own statement that its Alternative Display Facility will not be adjusting its operating hours at this timeMay 22Primary · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- The SIP Operating Committees (issuer release via PR Newswire)SIPs Receive SEC Approval for Extended Trading Hours Initiative: the six industry test events of October 2, 16 and 30, November 6 and 20 and December 4, and the December 6, 2026 production launch. Cited by the exemptive order itself at footnote 37 and independently corroborated by Nasdaq's own Equity Trader Alert. The committees' December 19, 2025 submission release and the CT Plan's independent administrator release are cited at their own recordsJul 7Primary · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- The Nasdaq Stock Market LLC (vendor alert)UTP Vendor Alert #2026-24: new overnight limit up limit down indicator values carried in the UQDF and UTDF feeds, the approximately 8:00 to 9:00 p.m. hedge on the maintenance window, and the retirement of the evening test broadcast service on December 6, 2026. A single fetch by one analyst; the enumerated values are the most technically specific claim in the pack and are due re-confirmation before any of them is printedAug 12Primary · The Guardrail Starts When the Tape Does · The Weave
- The Nasdaq Stock Market LLC (SEC Release 34-106169; read from the filing PDF, sec.gov and Listing Center both refuse automated retrieval)Proposed Rule Change to Amend Equity 4, Rule 4759(a) Regarding Sources of Data Used: designates CQS/UQDF as the source of quotation data during the Night Session, for a rule governing data the Nasdaq System consumes "for the handling, routing, and execution of orders, as well as for the regulatory compliance processes related to those functions," on the stated ground that limiting timestamp changes to those feeds lets the Exchange "use a reliable consolidated source of quotation data during that session"; filed as non-controversial under Rule 19b-4(f)(6)Aug 20Primary · The Next Fixed Point Is a Room in Washington · The Weave
- Securities and Exchange Commission (via Federal Register)Release 34-105860, SR-NASDAQ-2026-057, 91 FR 42990: the filing that actually carries the corporate action halt. It states proposed Rule 4120(a)(15), the nine enumerated categories of corporate actions and issuer-related events, the halt implemented after the conclusion of the Post-Market Hours session and before the start of the Night Session at 9:00 p.m., the resumption through the Nasdaq Halt Cross at 8:00 a.m. on the market effective date, and its effectiveness on filing under Section 19(b)(3)(A) and Rule 19b-4(f)(6) with an operative date designated as the launch. Release 34-106139 does not contain these provisions and is not cited for themJul 13Primary · The Session Is Advertised as Continuous. For Some Listings It Is Not.
- Securities and Exchange Commission (via Federal Register)Release 34-105779 of June 26, 2026, the Extended Hours Amendments to the CTA and CQ Plans, 91 FR 40082: the companion order to Release 34-105780, published as a separate Federal Register document under FR Doc 2026-13234. It states that the Commission 'received no comments on the Amended Proposal.' This is the third and last of the three orders on which the no-comment finding rests, and it was read at the documentJul 1Primary · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- The SIP Operating Committees (issuer release via PR Newswire)SIPs Submit Plan Amendment to Extend Operating Hours to Accommodate Overnight Trading, December 19, 2025: the committees' own announcement of the submission, and their statement that 'the Commission will have up to 300 days to approve or disapprove it.' The 300-day figure is the committees' characterisation of the statutory window, not the Commission's. Release 34-105780 gives the formal filing date as January 12, 2026, so December 19, 2025 is the date the committees announced their submission. That same release carries the committees' own statement of who runs the tapes: 'The New York Stock Exchange serves as the Administrator for the CTA/CQ SIP Plans and the Securities Industry Automation Corporation is the Processor. Nasdaq business units serve as the Administrator and Processor for the UTP SIP.' At plan level the CTA administrator role is further split, New York Stock Exchange LLC for Network A and NYSE American for Network BDec 19Primary · The Rulebook Was Assembled in Public, and Almost Nobody Read It · The Weave
- The CT Plan (issuer release via PR Newswire)CT Plan Selects DataCT as its Independent Administrator, December 17, 2025: the single-plan successor to the exchange-administered tapes. The release states the CT Plan 'is expected to go live in Q2 2027' and that 'following the CT Plan's anticipated go-live in early 2027, the CTA/CQ and UTP Plans are expected to be retired after a brief transition period.' This is the source for the second-quarter 2027 handover in Looking ForwardDec 17Primary · The Next Fixed Point Is a Room in Washington
Secondary sources, by sector5
- Simpson Thacher & Bartlett (client memorandum)The firm's read of the 23/5 approval: the trading pause from 8:00 to 9:00 p.m. described as the window in which Nasdaq would conduct maintenance and testing and process dividends, stock splits and other corporate actions pending for the next trading day, and the firm's own advice that agreements and offering documents drafted with traditional trading hours in mind may need their definitions, conditions and timing provisions revisited. Cited for the advice; every factual proposition it carries is also in Release 34-105199. Its April-dated DTCC sentence is stale and is not carriedApr 29Secondary · The Session Is Advertised as Continuous. For Some Listings It Is Not. · The Weave
- Cooley LLP (CapitalXchange)Nasdaq 23/5 Trading: What Changes for Corporate Actions and What Doesn't: the regular nontrading window shrinking to one hour from 8:00 to 9:00 p.m., the halt after post-market hours end with trading resuming at 8:00 a.m. on the market effective date, and the firm's note that the amended halt rule does not change board or shareholder approval standards or replace existing notice and public disclosure requirements. Corroboration only; the halt mechanics are cited first to Nasdaq's own alertAug 19Secondary · The Session Is Advertised as Continuous. For Some Listings It Is Not.
- Blue Ocean Technologies (vendor deck, marked proprietary and confidential)US Overnight Markets Overview, presented to the Financial Information Forum: cited only for Blue Ocean's own account of its own regulatory position, that exchanges cannot operate when the SIP is closed while an ATS can operate outside SIP hours. Not cited for any volume, spread, share or execution figure; the publisher holds roughly 90 percent of the market its deck measures and the deck itself disclaims independent verificationMar 2026Secondary · A Price of Zero Is Still a Price · The Weave
- 24X National Exchange LLC (issuer press release)24X National Exchange's Response Letter Urges SEC Approval of Temporary Exemption to Launch Overnight Trading: the company's own framing of its request, and nothing beyond it. The response letter itself is dated April 23, 2026 per footnote 13 of the order, and 24X commenced operations on October 14, 2025 per the order, not on either press release dateApr 29Secondary · The Rulebook Was Assembled in Public, and Almost Nobody Read It
- Traders Magazine (trade press; the DTCC primary was never fetched)DTCC's NSCC Extends Clearing Hours to 24x5: the June 29, 2026 go-live and the Steele quotation on near-continuous clearing. The Commission's approval of the NSCC rules is primary-sourced at Release 34-105565; this go-live date rests on three mutually consistent but non-independent trade-press items and is due an upgrade to DTCC's own published documentJun 30Secondary · The Next Fixed Point Is a Room in Washington · The Rulebook Was Assembled in Public, and Almost Nobody Read It