Why a Stock Token's Price Drifts When the Market Is Shut

The selling point of a tokenised equity is that it trades when the exchange does not. That is true, and it is only half the system. The other half – pricing, supply and the underlying market – keeps banking hours, and the mismatch is where the interesting behaviour lives.

Clock one: the token

Stock Tokens are standard ERC-20s on a permissionless chain. Nothing in the contract knows what day it is, so transfers and swaps continue around the clock. This part works exactly as advertised.

Clock two: the price feed

Each token has its own Chainlink feed, and the documentation states that stock feeds update 24/5, following market hours. Outside those hours the last published price stands while the token keeps trading.

So the number your interface shows on a Saturday is not a live valuation. It is Friday's close, sitting still, while the actual traded price on-chain moves around it.

Clock three: supply

This is the mechanism that matters most and the one almost nobody knows about. Minting and burning happen only inside a tokenization window – documented as Monday 02:00 CET/CEST to Saturday 02:00 CET/CEST – and only Authorised Participants can do it at all, after business onboarding.

The documentation is equally explicit that end users may still buy and sell on-chain outside that window. So over a weekend the price moves against a supply that cannot follow it. The usual arbitrage that keeps a wrapper close to its underlying – create when it trades rich, redeem when it trades cheap – is switched off.

What this produces

• Premiums and discounts to the underlying, largest when the gap between sessions is longest.
• Wider spreads and thinner depth, because a fixed pool of already-issued tokens is doing all the work.
• Gaps at the reopen, when the feed updates and the on-chain price converges to whatever the share actually did.
• Occasional sharp moves on small size, which read as news and are usually just thin weekend liquidity.

The disclosure that tells you the limit

Robinhood publishes a price deviation policy: a token is disclosed when its on-chain price differs from the underlying reference price by 5% or more for seven consecutive trading days, assessed against the NYSE close. That figure is a useful anchor for what counts as a structural divergence rather than weekend noise.

How to trade around it

1. Do not read a weekend price as a valuation. Compare it against Friday's close and treat the difference as a positioning signal, not information about the company.
2. Size down outside market hours. Depth is thinner precisely when no new supply can be created.
3. Expect the reopen to resolve the gap, and do not confuse that convergence with a move in the underlying.
4. Check the sequencer before trusting any feed. The documentation warns that during a sequencer outage feeds can go stale – a price that is not updating is not the same as a price that is not moving.
5. Check per-asset trading capabilities: not every stock token is tradable across market, extended and overnight sessions, and the asset registry says which.

None of this is a flaw in the product. It is what happens when you put a twenty-four-hour wrapper on an asset whose market closes, and it is entirely predictable once you know which of the three clocks is running.