SEC proposal to scrap Reg NMS quote protections opens routing-power fight

The SEC’s June 11 proposal to rescind two Regulation NMS provisions has turned U.S. stock-market plumbing into a live policy fight. The agency’s docket identifies the rulemaking as S7-2026-20 and says the amendments would remove Rule 611, the trade-through prohibition for national market system stocks, and Rule 610(e), the restriction on locked and crossed quotations. If adopted, the change would affect the rules that help determine when brokers and trading venues must respect displayed prices across markets, with consequences for exchanges, wholesalers, internalizers, alternative trading systems, retail brokers, institutional investors, and newer tokenized-equity venues.

The core confirmed development is narrower than some of the market reaction. According to the SEC’s press release, the Commission proposed amendments on June 11, 2026, to rescind Rules 611 and 610(e), related defined terms in Rule 600, and make conforming changes. The SEC docket confirms that Rule 611 contains the trade-through prohibition and that Rule 610(e) contains restrictions on locking and crossing quotations in national market system stocks.

Rule 611 is the bigger flashpoint because it is the federal order-protection rule. The Block’s extracted explanation says it prevents a trading center from executing at a price inferior to a protected quotation available elsewhere, while the SEC docket says the proposal would rescind that rule outright. That supports the basic stakes: the proposal is not just a technical routing adjustment, but a possible removal of a federal protection for displayed quotations.

Rule 610(e) is the companion piece for displayed market quality. The SEC docket says it restricts locking and crossing quotations, and The Block describes the provision as barring displayed quotes that create locked or crossed markets. The extracted record supports that rescission would remove the SEC rule, but it does not establish what exchange rules, broker duties, or other obligations would still constrain locked or crossed markets afterward.

SEC Chair Paul Atkins is framing the move as deregulation in service of competition. The SEC press release attributes to Atkins the view that two decades of Rule 611 experience warrant review and says the proposal is intended to simplify market structure, reduce costs for market participants, and let competition, innovation, and market forces shape equity markets. That is the strongest sourced rationale in the pack, but it is Atkins’s framing, not proof that costs would fall or that execution quality would improve.

The routing-power question remains the heart of the story, but the evidence supports it as a hypothesis rather than a measured outcome. Removing federal trade-through protection could give brokers, wholesalers, internalizers, ATSs, and exchanges more discretion to compete on execution models, fees, speed, and liquidity access. The pack does not include the full SEC economic analysis, broker routing disclosures, exchange fee filings, FINRA materials, ATS data, or market-participant comments needed to say who would gain leverage or whether investors would see better or worse execution.

The tokenized-stock angle is visible but under-verified. Alex Thorn posted on X that Rule 611 is a structural barrier for automated market maker-based tokenized U.S. equities because AMMs execute against pool prices with slippage and block-time granularity; CoinDesk and KuCoin also framed the proposal as relevant to tokenized equities, and Trust Wallet and PancakeSwap posted on June 12 that bStocks were available through their products on BNB Chain. Those sources show crypto-market interest around the proposal, but they do not establish that the SEC’s rescission would make tokenized-stock trading legally or operationally clear.

Investor-protection concerns are also present, but the extracted evidence is still thin. The rule mechanics support the question: if Rule 611 blocks executions at prices inferior to protected quotations, rescinding it raises obvious issues for best execution and broker routing oversight. Joe Saluzzi posted criticism from a retail-investor protection perspective, and X News summaries described broader concern, but the pack does not include a direct investor-advocate statement, dissenting commissioner statement, official vote record, or data on retail execution quality. The next phase of the rulemaking will matter because comment letters and the full proposing release should test whether the SEC’s competition theory can answer those risks.