SEC Opens Onchain US Stock Trading — Five-Year 'Innovation Exemption' Lets Tokenized Equities Trade on Public Blockchains, Two Days After Clarity Act Died

What happened: The SEC's order (press release 2026-90, Sept 17, 2026) grants 'temporary, conditional exemptive relief' to Tokenized Securities Venues from the definition of 'exchange' in the Securities Exchange Act of 1934. TSVs may operate permissioned automated market makers and liquidity pools ('AMM Liquidity Pools') where participants trade tokenized National Market System stock. Chairman Paul Atkins called it 'a significant step forward, within its statutory authority, to bring America's capital markets into the digital age,' and framed it as 'a bridge toward durable rulemaking' while the Commission solicits public comment. Jamie Selway, Director of the Division of Trading and Markets, called it 'an important milestone for the Commission's work to open our capital markets for tokenized securities.'

Key conditions: (1) limits on the number of symbols and volume traded (specific thresholds are in the order, not the press release); (2) tokenized stock must provide holders the same rights and privileges as traditional NMS stock of an equivalent class; (3) before listing a third party's tokenized stock, the TSV must give the underlying issuer written notice and an opportunity to object; (4) smart contracts must be auditable, public, and deployed on a public, permissionless distributed ledger — which excludes private bank chains and consortium networks; (5) trading must halt concurrently with the primary listing exchange; (6) public notice of operations and trading activity. The order also conditionally exempts AMM liquidity providers supplying tokenized stock with proprietary capital from the 'dealer' definition (Section 3(a)(5)). The exemptions expire five years after publication.

Comparison: Tokenized equities already traded at gray-market scale — Solana logged roughly $10B of tokenized stock volume in June 2026, about 95% of global onchain equity trading (per Solana Compass). The Solana Policy Institute (whose April 2025 'Project Open' proposal sought exactly this pilot) says the order has 'the potential to move trillions of dollars in existing financial assets onto public, permissionless blockchains.' Robinhood CEO Vlad Tenev called it 'a good day for US innovation.' Reaction from builders was immediate: Backpack and xStocks publicly positioned to build under the exemption.

Why it matters: This is the single largest crypto-TradFi convergence event of the year. Two days after the Senate killed the Clarity Act's cloture vote 49-50, the SEC unilaterally created a sanctioned lane for stock trading on public blockchains — and by requiring public, permissionless ledgers, it effectively ruled private bank chains out of the future of tokenized US equities. It converts an existing multibillion-dollar gray market into regulated infrastructure with issuer opt-outs, and signals that post-Clarity, agency rulemaking — not Congress — is the near-term regulatory path (CFTC followed within hours with a developer-friendly no-action stance of its own, per The Block).