OKXICE outlines 24/7 tokenized stock venue on XLayer

OKXICE, the joint venture between OKX and Intercontinental Exchange (ICE), has notified the SEC of plans for a permissioned venue to trade tokenized US stocks around the clock, using Uniswap v4 liquidity pools on XLayer. The proposal brings equity tokens into crypto-style, on-chain trading, but the notice describes a planned service, not a venue already operating. In its October 4 public notice, OKXICE says its Texas-based operator is 50% owned by ICE and 50% by OKC USA Holding.

How would trades work without an order book?

Instead of matching bids and asks, the venue would route trades through permissioned automated market maker (AMM) pools. Each pool pairs one tokenized stock with USDC, USDG or USDT. The notice says the pools use Uniswap v4 contracts deployed on XLayer, with an OKXICE “Hook” contract enforcing access rules. Prices would come from the ratio of assets in each pool, not an oracle feed in the pool contracts; the notice says prices can therefore diverge from the underlying share price, particularly when liquidity is thin or the stock market is closed.

Trading would require an approved self-custodial wallet. After identity, sanctions and wallet screening, OKXICE would issue the participant a non-transferable soulbound token (SBT). Before a quote and before each trade or liquidity action, the interface and pool contracts would check that the wallet holds a valid, unrevoked SBT. A trade would execute and settle atomically in one XLayer transaction: if it fails, neither side’s assets move, though the user may still pay a network fee. The notice says the venue would not hold customer assets, extend credit or operate an order book.

What would a stock token represent?

For tokens created by an unaffiliated third party, the notice says a registered broker-dealer would hold the underlying shares one for one. Each token would represent a security entitlement to one share, with ownership recorded on XLayer and reconciled with the tokenizer’s books. The tokenizer would mint only after its broker-dealer acquired and took custody of the corresponding shares; redemption would burn tokens before the shares were sold or delivered.

OKXICE says it would check that tokens carry equivalent share rights, including dividends and voting, and stop trading a token if those rights were no longer provided. The SEC’s September 17 announcement of its Innovation Exemption describes temporary, conditional relief from the Exchange Act’s definition of an exchange for qualifying tokenized securities venues using permissioned AMM pools. For third-party-tokenized shares, the exemption requires written notice to the issuer and an opportunity to object. OKXICE’s notice records an objection from Cerebras Systems; the notice does not say the exemption is a general SEC approval of the venture or its disclosures.

What could limit or interrupt trading?

The notice lists more than 60 proposed stocks, but that list is subject to the exemption’s symbol and volume limits. The venue says it would operate 24 hours a day, seven days a week, and pause a token when trading in its underlying share is halted. Continuous venue hours do not guarantee continuous liquidity: providers are not generally required to keep funds in a pool, and low reserves can increase price impact or cause a trade to fail.

There are also dependencies beyond the AMM. OKXICE’s notice says XLayer’s sequencer orders transactions, so an outage, congestion or protocol change could delay, reorder or prevent trades. The venue’s administrator keys can pause pools and change permissions; critical changes require multisignature approval, while day-to-day functions use a separate single-signature key. OKXICE also warns that tokenizer or broker-dealer failure could disrupt access to the underlying shares or the passage of dividends and voting rights. The planned system therefore combines on-chain execution with off-chain custody, screening and rights administration, each of which must work for the token to track the share it represents.

References

• October 4 public notice — okx.com
• September 17 announcement of its Innovation Exemption — sec.gov