When a Tokenized Stock Can Be Halted for Three Months

The Securities and Exchange Commission on Sept. 17 approved a five-year pilot for tokenized securities venues that allows an exchange to halt trading in a tokenized stock for three months after repeated breaches of volume limits. The pause applies to that stock on the exchange and its affiliated venues and is tied to measured tokenized volume relative to the traditional stock market.

Qualifying tokenized securities must preserve the same economic and governance rights as ordinary shares, including dividends and voting rights. Instruments that only mirror a stock’s price without providing those rights do not qualify. Trading on approved venues is permissioned: participants and wallets must meet verification requirements. The pilot permits the use of automated market makers, software-driven liquidity pools that set prices by formula, to test whether they can provide reliable trading.

The pilot limits both the number of eligible listings and the average daily tokenized volume per underlying stock. Tier 1, which covers large-cap names such as S&P 500 and Russell 1000 members and certain exchange-traded products, allows up to 750 symbols and a per-stock tokenized volume cap equal to 0.25% of the traditional market’s prior-month average daily share volume. Tier 2 allows up to 2,500 symbols and a per-stock cap of 2.5% of the prior-month average daily share volume. The test compares average daily tokenized trading across affiliated venues with average daily trading in the underlying shares; a single busy session does not by itself trigger a breach.

Enforcement begins with a grace step after the first breach, when the exchange must take actions to restore compliance. Subsequent breaches for the same stock require an immediate three-month trading pause on the exchange and its affiliates, measured from the date of the breach. Exchanges may suspend trading earlier to avoid breaching the limit. They must notify participants immediately of any volume-related pause and update public disclosures within five business days.

Regulators set the limits to keep activity small while observing risks to the wider equity market. Limited inventories in automated pools and formula-driven pricing can push a token’s price away from the conventional market during concentrated buying or selling. Arbitrageurs could try to profit from price differences, but success depends on available liquidity and connectivity between venues.

Owning a token does not guarantee an immediate ability to sell during a pause. Moving a token between wallets does not resolve a trading halt unless another eligible exchange or a redemption mechanism accepts that specific instrument. Whether such routes exist depends on the token’s legal structure, the institutions backing it, and permissions tied to trading and custody. Market participants should request written examples from providers explaining custody arrangements, whether shareholder rights continue during a pause, permitted transfers, any redemption procedures and associated costs.

At an SEC roundtable on extended hours trading, Commissioner Mark Uyeda highlighted the trade-off between spreading liquidity over longer hours and diluting it. The pilot offers a five-year period for firms to test automated liquidity and permissioned access while imposing operational limits intended to prevent the experiment from growing large enough to affect traditional markets.