## OKX × ICE tokenized-stock venue = Uniswap v4 permissioned-hook AMM

Founder of Uniswap Hayden Adams on Oct 5, 2026: *"Excited to have this TSV collaboration between @ICE_Markets and @okx launching as a Uniswap v4 hook"* — *"v4 hooks are the ideal market structure for TSVs which will bring new assets and users to the protocol"* with link to OKX PDF https://www.okx.com/cdn/assets/files/2610/798CC1267CB56FB2.pdf — haydenzadams post
The Defiant: *"TOKENIZED STOCK TRADING PLANNED ON @Uniswap — Only approved wallets could trade or supply liquidity at @okx and @ICE_Markets' planned v4 venue on X Layer. Third-party contracts would also need approval."* — DefiantNews post / thedefiant.io article

Entity: OKXICE LLC — 50% ICE + 50% OKX USA joint venture; ICE is NYSE owner
Chain: OKX X Layer, gas in OKB
Market structure: Uniswap v4 pools with a permissioned hook, not order book; price by x*y=k, 24/7 trading
Pairs: 60+ stocks (Nvidia, Tesla, Microsoft, Google, Apple, SpaceX, Amazon named) vs USDC, USDT, USDG
Backing: 1:1 NMS stocks, not synthetics, with same economic, dividend, voting, split/merger rights
Self-custody, fully on-chain settlement, no clearinghouse; spot only — no margin/borrowing
Access: KYC/AML + non-transferable SBT (soulbound) in wallet; hook checks SBT on every trade, transfer and LP add; OKXICE can burn/revoke and delist on sanctions/suspicious/regulatory case
LP: anyone with SBT can LP; 100% pool fees to LPs, OKXICE takes separate per-trade service fee
Composability blocked: third-party contracts need whitelist approval
Halt rule: if underlying halted (delisting/circuit breaker) — venue halts
Issuer objection already filed by Cerebras Systems Inc. (CBRS); tokenizer/custodian/mint-redeem entity still unclear; cross-venue trading (Ondo, xStocks, bStocks, Coinbase, Robinhood standards) unresolved
SEC cap: daily volume cap per stock; second and later breach = 3-month halt for that stock — full 16-point thread here

This is a planned/described venue, not a live launch — trading only after SEC issuer-notice waiting period.

What the data does not establish: on-chain hook/pool addresses, live volume or fee numbers.