What Has to Change Before US Markets Trade 24 Hours?
Clearing, not trading. The SEC holds a roundtable on 17 September 2026 on preparations for 24-hour trading in US equity markets, covering overnight support, operational resilience, clearing requirements, national market system rules and broker-dealer responsibilities. Cboe has already filed for near-24-hour weekday trading on EDGX with a proposed December 2026 launch, and the qualifiers in that description — near, weekday — are where the difficulty lives. Matching orders around the clock is straightforward; clearing them is an institutional process built on a daily cycle of novation, netting, margin and a settlement batch anchored to business days. This is the same constraint tokenized products face when their creation and redemption windows close on Friday evening while the token keeps trading, and it explains why 24/7 claims deserve reading closely.
TL;DR — Key Takeaways
- ✓The Event: SEC roundtable on 17 September 2026, 10am-4pm Eastern, on preparations for 24-hour equity trading. A discussion, not a rulemaking — no launch date will be set.
- ✓The Live Proposal: Cboe has filed for near-24-hour weekday trading on EDGX, proposed for December 2026, subject to regulatory review and industry readiness.
- ✓The Real Constraint: Clearing, not matching. Novation, netting, margin and the settlement batch run on a daily cycle anchored to business days.
- ✓The Same Problem On-Chain: Tokenized products show weekend volume falling 70-90% because mint and redeem close with US market hours. Continuous trading without continuous creation is a different product.
- ✓What Issuers Should Do: Qualify the 24/7 claim. Name which component is continuous and which is constrained, before a stressed weekend does it for you.
The Hard Part Was Never the Order Book
Matching buyers and sellers at 3am is a solved problem — crypto markets have done it continuously for a decade. What the SEC convenes a roundtable about on 17 September 2026 is everything that happens after the match: clearing requirements, national market system rules, broker-dealer responsibilities and operational resilience in a market that never closes.
The distinction is worth holding onto, because it is the same one that separates a tokenized product's marketing from its mechanics. Continuous trading is cheap. Continuous clearing requires a central counterparty, its members, and their funding to operate on a schedule none of them currently runs.
The roundtable will address “preparations to support overnight trading, operations and resiliency in a 24-hour market, and opportunities and challenges for expansion.”
— SEC announcement of the 17 September 2026 roundtable on 24-hour trading
Three topics, and two of them are operational rather than regulatory. That ratio is the finding.
What Actually Has to Change
Six layers of market infrastructure assume a market that closes. Each can be extended, and each extension has a cost borne by a specific party — which is why the question is negotiated at a roundtable rather than solved by a vendor.
| Layer | Current assumption | What 24-hour trading requires |
|---|---|---|
| Central clearing | Daily cycle of novation and netting | Continuous processing or an overnight accumulation window |
| Margin | Calls issued and met on business days | Intraday and overnight calls with funding available to meet them |
| Settlement | Batch anchored to business days | Either a continuous process or an explicit queue |
| NMS rules | Reference prices from a consolidated tape during session hours | Best-execution and price-protection references outside those hours |
| Broker-dealer operations | Staffed against a session, with a maintenance window | Round-the-clock coverage and no natural maintenance window |
| Corporate actions | Processed between sessions | Processed against a market that is open while they apply |
Key Insight
The bottom row is the one that gets least attention and creates the most operational pain. Corporate actions — dividends, splits, mergers, name changes — are currently applied when the market is shut, which is why the gap between sessions exists at all. A market that never closes has to process an entitlement change against live trading, which means either halting the affected security, applying the action to a moving position set, or accepting that trades executed either side of the action reference different instruments. Every venue that has tried continuous trading has arrived at this problem, and none has solved it elegantly.
Tokenized Markets Have Not Solved This Either
Tokenized products claim 24/7 settlement, and at the transfer layer the claim is true. At the creation layer it usually is not: mint and redeem windows close with US business hours, and on-chain volume for affected products falls roughly 70-90% at weekends as a result.
The consequence is not merely quieter weekends. When new units cannot be created, the arbitrage that keeps a token trading near its reference asset loses its mechanism. A holder selling into a thin weekend book faces a spread that no authorised participant can compress, because the participant cannot create inventory until Monday. The 24/7 claim is most misleading precisely when it matters most.
Genuinely Continuous
- Peer-to-peer transfer of an existing token
- Collateral movement between on-chain venues
- Eligibility checks at the point of transfer
- Balance and position visibility
Usually Not Continuous
- Creation and redemption of units
- The cash leg into a bank account
- NAV striking for fund products
- Anything requiring a bank to act
The right-hand column is defined by a single common factor: each item requires an institution with business hours. That is why continuous settlement is not a ledger property, and why the conventional market's roundtable and the tokenized market's weekend gap are the same problem viewed from two directions — as seen in the cash-leg dependency described in how a cross-border tokenized redemption settles.
One Regulator Has Already Permitted This
Hong Kong's SFC has permitted continuous secondary trading of tokenised funds, and the conditions it attached are instructive: the permission came with safeguards on valuation, pricing controls and eligibility resolution at the point of transfer rather than in a batch.
That combination is the actual answer to the question the SEC roundtable poses. Continuous trading becomes acceptable when the controls that used to run between sessions are re-expressed as conditions evaluated at each transfer. It is not that the checks disappear; it is that they stop being periodic. Any market moving to 24 hours has to make the same conversion, and the difference between venues will be how much of it they complete before launch rather than after.
Valuation must be continuous or explicitly stale
A price control needs a reference, and a reference struck once a day is stale for twenty-three hours. Either the valuation runs continuously or the market must disclose that it is trading against a stale reference, which is a disclosure most venues would rather not make.
Eligibility resolves at transfer, not in a batch
Overnight eligibility checks work when there is an overnight. Continuous markets require the eligibility decision to be made at the moment of transfer, which is the single largest architectural difference between batch-era and continuous-era compliance.
Circuit breakers need a continuous definition
Volatility controls calibrated to session behaviour do not translate to a thin 4am book. A control designed for liquid hours either triggers constantly overnight or fails to trigger when it should.
Someone must fund the position overnight
This is the item that decides whether the rest is feasible. Continuous margin means continuous funding, and firms currently rely on the close to square positions and meet calls in an orderly way.
The Hong Kong framework and its safeguards are set out in how Hong Kong allows 24/7 trading of tokenised funds. The relevant point for a US market participant is that a regulator reaching this outcome did so by tightening conditions, not by relaxing them.
How to State a 24/7 Claim Honestly
Name the component. A programme where transfer is continuous and redemption is not should say so, because the distinction determines whether a holder can realise value at 3am on a Sunday — and that is the only moment at which the claim is ever tested.
Accurate claims
- “Transfers settle continuously”
- “Redemption requests accepted 24/7, processed on business days”
- “Eligibility resolved at transfer”
- “NAV struck daily; secondary price may diverge”
Claims to avoid
- “24/7 settlement” with a Friday cut-off
- “Instant liquidity” without a market maker
- “Always redeemable” where a bank must act
- “Continuous pricing” from a daily NAV
Disclose explicitly
- Creation and redemption cut-off times
- Behaviour on weekends and market holidays
- Which reference price applies out of hours
- Who provides liquidity when creation is closed
None of this makes a product worse. A programme that trades continuously and redeems on business days is a perfectly sound design, and it is what almost every tokenized product actually is. The exposure comes from describing it as something else, because the description is what a holder relies on when deciding they can exit whenever they like.
How Blockmaze Supports Continuous Operation
The architectural requirement for a continuous market is that every check which used to run between sessions runs at the transfer instead. That is a design property, and a system built around a nightly batch cannot acquire it later.
Eligibility Resolved at Transfer
Investor eligibility and transfer restrictions are evaluated at the moment of settlement rather than in an overnight run, which is what removes the dependency on a market close.
Operating Windows Recorded
Creation, redemption and NAV cut-offs are properties of the instrument, so the gap between continuous transfer and business-hours redemption is disclosed rather than discovered.
Valuation Source Recorded
The feed behind any price control is recorded with its timestamp, so a control operating against a stale reference is visible as such instead of appearing authoritative.
Continuous Transfer Record
The audit trail has no session boundary, so a transfer at 3am on a Sunday is evidenced identically to one at midday on a Tuesday — including which rule version governed it.
The second item is the practical one for most programmes today. Very few need genuinely continuous creation; nearly all need to stop implying they have it. Recording the operating window against the instrument converts a marketing claim into a disclosed parameter, which is both more accurate and considerably easier to defend — the same discipline applied to liquidity figures in RWA secondary market liquidity and compliance.
Running a Market That Does Not Close?
Blockmaze resolves eligibility at the point of transfer, records operating windows and valuation sources against each instrument, and keeps a transfer record with no session boundary.
Frequently Asked Questions
What is the SEC's 17 September 2026 roundtable about?
Preparations for 24-hour trading in US equity markets. The agenda covers support for overnight trading, operations and resiliency in a continuous market, and the opportunities and challenges of expansion — spanning clearing requirements, national market system rules, broker-dealer responsibilities, operational resilience and investor protection. It runs from 10am to 4pm Eastern at SEC headquarters in Washington and is streamed online. It is a discussion, not a rulemaking, and will not set a launch date.
Is anyone actually launching 24-hour trading?
Cboe has filed for near-24-hour weekday trading on its EDGX exchange, with a proposed December 2026 launch dependent on regulatory review and industry readiness. The wording matters: near-24-hour and weekday, not continuous and not weekends. Even the most advanced proposal in the US equity market stops short of what tokenized products already claim, and it does so because the constraint is in clearing and settlement rather than in the ability to match orders.
Why is clearing the hard part rather than trading?
Because matching an order is a computation and clearing is an institutional process with a daily cycle. Trades clear through a central counterparty on a schedule, with novation, netting, margin calls and a settlement batch anchored to business days. Extending trading hours means either running that machinery continuously — which requires funding, staffing and risk management around the clock — or accumulating trades overnight for a batch that runs later, which reintroduces exactly the delay continuous trading was meant to remove.
How does this relate to tokenized assets?
Tokenized products have been marketed on 24/7 settlement for years, and the SEC roundtable is the conventional market working through what that actually requires. The comparison is unflattering in both directions. Conventional markets have not solved continuous clearing; tokenized markets have often claimed to while quietly retaining a creation and redemption window tied to US business hours. Both are constrained by the same thing — the cash leg and the entity that has to fund it — and neither is constrained by ledger technology.
What is the weekend problem?
That an asset can trade when its value cannot be created or redeemed. Tokenized products routinely show on-chain volume falling 70-90% at weekends because mint and redeem windows close with US market hours, and the arbitrage that holds a token near its reference price weakens exactly when no correction is available. A 24-hour weekday market has a smaller version of the same gap. Continuous trading without continuous creation is a structurally different product from continuous markets.
What should an RWA issuer take from this?
That a 24/7 claim needs qualifying at the point of sale. If secondary transfer runs continuously but subscription, redemption or NAV striking does not, holders should be told which is which — because the difference determines whether they can exit at a fair price at 3am on a Sunday. The honest formulation names the continuous component and the constrained one. Programmes that market continuous access and operate a business-hours cash leg are setting up a complaint they will receive during the first stressed weekend.
Related Articles
How Does Hong Kong Allow 24/7 Trading of Tokenised Funds?
A regulator that has already permitted continuous trading, and the safeguards it required.
What Does Atomic Settlement Actually Change?
Why removing the settlement gap costs you netting.
Settlement Finality for Tokenized Assets
When a transfer becomes legally final, and why the clock matters.
RWA Secondary Market Liquidity and Compliance
What produces tradable depth once the venue is open.