Trading hours and continuous markets

Why it matters

A ledger does not observe a weekend. That fact is doing most of the work in the case for tokenized markets: an asset that can be transferred at any hour should be tradable at any hour, and the closing bell starts to look like an artefact of an era when settlement was done by people in a building.

The difficulty is that a venue is the thinnest layer of a market. Beneath it sit a settlement system with an operating window, a funding market with a cut-off, a custodian with a business day, a reference rate published once a day, a valuation point struck once a day and a corporate-actions calendar defined in business days. A tokenized venue running continuously on top of that stack extends the hours in which a trade can be agreed, not the hours in which it can be completed, and the difference between the two is where the exposures in this section sit.

How it works

It helps to separate the parts of the clock that are usually collapsed into one claim.

Trading hours are when orders can be matched. Settlement hours are when title and cash actually move, which in most markets is a shorter window on fewer days. Funding hours are when a position can be financed, which is shorter still and closes hardest over a weekend. Servicing dates are the calendar on which entitlements are determined: record date, ex-date, payment date, each defined in business days. Valuation points are when a price is struck for purposes other than trading. A market can extend any one of these without extending the others, and most of the announcements in this field extend exactly one.

Two designs are in use, and they sit differently against the clock. In the first, the token is the same security: the SEC's order of 18 March 2026 approving Nasdaq's proposal, as amended, permits tokenized and conventional shares to trade on the same order book with the same priority, provided the two remain fungible and share the same CUSIP and symbol, with a tokenization flag on orders in Russell 1000 constituents and large index exchange-traded funds and tokenization handled through the depository. Nothing in that order lengthens the trading day. It changes the form of the share and leaves the calendar alone.

In the second, the token is a separate instrument referencing a custodied share, issued outside the market where the share is listed. That design can trade whenever its own venue is open, because it is not constrained by the listing venue's hours, and it inherits a different problem: the price it prints while the underlying market is shut is not the underlying's price.

Economic mechanism

The benefit of a longer session is the ability to act on information when it arrives rather than at the next open. Overnight news currently accumulates into a gap at the open, which is a transfer between whoever is positioned and whoever is not, and continuous trading redistributes that.

The cost is that liquidity depends on staffed desks. Spreads track participation, and the participants who quote at midday are not at their screens at three in the morning. Extending hours therefore does not spread the same liquidity more thinly so much as create a tail of hours in which price formation is materially worse. That matters beyond the people trading in it, because the rest of the system reads prices off the tape without asking what hour produced them.

Funding is the sharper mechanism, and it is where the institutional work is concentrated. A position that cannot be financed over a weekend is carried on somebody's balance sheet, and that carrying cost is the real price of weekend liquidity. Removing the gap is worth money in a way that a longer equity session is not, which is why the most serious continuous-settlement projects are in Treasuries and repo rather than in stocks.

Finally, a divergence between the token and the underlying during closed hours is a basis and not a pricing failure. When the token trades and the underlying does not, the token prices the expected reopening. That is useful information, and it is also why a closed-hours print should not be used as a valuation.

Participants

Venues set the session. Market makers decide whether the session is real, since a venue that is open with no quotes is a technicality. Issuers of wrapped tokens choose which hours to offer and which jurisdictions to exclude. Custodians, transfer agents and central securities depositories hold the register and the calendar that determines entitlements. Settlement systems and clearing banks control the hours in which the cash leg can move, and index and rate administrators control the moments at which a reference number exists.

The binding constraint usually sits with the least visible of these. A venue can announce continuous trading in a press release; the agent bank whose day ends at a fixed hour cannot, and it is the one that decides when the trade is done.

Examples

The Nasdaq order is the regulatory milestone and the clearest illustration that tokenization and trading hours are separate questions. The exchange asked for permission to trade the same securities in tokenized form and got it; the session did not change.

BNY is pursuing the other half. Reported on 22 July 2026, its plan is to remove the weekend and overnight gap in US Treasury settlement, piloting tokenized Treasuries on its own permissioned blockchain by the end of 2026 and aiming for round-the-clock settlement during 2027. It has already settled an after-hours Treasury trade between Ripple and OpenEden that was executed on Tradeweb, though the cash leg went through conventional processes on BNY's own books rather than onchain. The scale explains the interest: the bank clears $24.3tn a day as a triparty repo agent and moves roughly $2.5tn of payments daily, so a weekend is an expensive thing to leave in the system.

SIX Digital Exchange is the case of a fully regulated stack that still keeps office hours. It received exchange and central securities depository licences from FINMA on 10 September 2021 and issued a CHF 150m five-year bond with a 0.125% coupon on 18 November 2021, split into a CHF 100m digital tranche and a CHF 50m conventional tranche that were exchangeable into one another. Every legal component of settlement was in place on a ledger, and the venue still runs a Swiss business day, because its participants and its cash leg do.

The wrapped-token venues show the opposite trade-off. Kraken's xStocks launched on 30 June 2026 with 60 assets, issued by Backed Assets (JE) Limited in Jersey and unavailable to US persons, and Robinhood announced more than 200 stock tokens on an Arbitrum-based chain for 30 EU and EEA countries the same day. These trade in hours when the New York market is closed, are not available where the underlying is listed, and price the reopening rather than the underlying.

Risks and limitations

The first risk is that a closed-hours price is consumed downstream as though it were a market price. Collateral valuations, margin calls, oracle feeds and index calculations all take a number from a tape, and a thin overnight print used for any of those transmits a bad price into decisions that were not made in that hour.

The second is asset servicing. A record date is a moment on a business-day calendar, and a token that changes hands at two in the morning on a Sunday between record date and payment date needs a rule about who receives the coupon. The register decides, not the venue, which means the transfer agent's calendar governs a trade the venue thought was continuous.

The third is claimed hours that are not held. A platform can accept transfers at any time and still depend on a settlement system that closes, in which case it inherits those closed hours and defers the movement rather than performing it. A service that queues around the clock and settles on a business day is a different product from one that settles around the clock, and the two are described in the same language.

The fourth is operational. A venue that never closes has no window in which to take systems down, so upgrades, reconciliations and incident recovery have to be done while it is trading, and the overnight staffing that a continuous venue requires is a cost that does not scale down with the volume traded in those hours.

The last is fungibility. Nasdaq's approval holds while tokenized and conventional shares remain fungible and share the same identifier; if a token stops being the same security, the single order book it was permitted to join is no longer the market it is trading against.

Key metrics

Read the clock layer by layer rather than as one claim: trading hours, settlement hours, funding availability and valuation frequency, and note that a venue's answer is only as good as the shortest of them. Then the share of volume executed outside the underlying market's session, and the spread in those hours against the session spread, which together say whether the extra hours are a market or a formality. Then elapsed time from trade to final settlement across a weekend, which is the number BNY's project is trying to move. Then whether a service described as continuous settles or only accepts instructions. Tokenized Treasuries outstanding is the relevant size series, because Treasuries are where continuous settlement is being built first and where the funding cost of a closed weekend is largest.

Related research

The Federal Register order of 23 March 2026 is the primary document on trading the same security in tokenized form, and it is worth reading for what it declines to change. The reporting on BNY of 23 July 2026 is the fullest account so far of an attempt at continuous settlement in a systemically important market. The SIX releases of 10 September 2021 and 18 November 2021 record the earliest fully regulated digital issuance and are the reference case for a ledger venue that still keeps a business day. The Kraken and Robinhood launches of 30 June 2026 are the wrapped-token comparison, and the concept pages on secondary liquidity and on net asset value cover the two questions this one deliberately leaves to them.

The data on this site

The series below are the ones that bear directly on this concept. Each carries its own source, cadence and coverage.