SEC Proposes Scrapping Reg NMS Trade-Through Rule

The Securities and Change Fee has proposed rescinding Rule 611 of Regulation NMS, the order-protection rule that has anchored US equity-market construction for twenty years, in what could be essentially the most consequential rewrite of the framework because it was adopted in 2005. Introduced on 11 June 2026, the proposal would additionally rescind Rule 610(e), the locked-and-crossed-markets provision, and take away associated outlined phrases in Rule 600 alongside conforming adjustments to different guidelines that reference protected quotations.

Rule 611, identified formally because the order-protection rule and broadly referred to as the trade-through rule, prohibits buying and selling venues from executing orders at costs inferior to one of the best displayed quotations on different exchanges, successfully making the nationwide greatest bid and provide a regulatory anchor for US order routing. SEC Chairman Paul Atkins framed the proposal as overdue, arguing that after twenty years the rule’s unintended penalties have hindered reasonably than enhanced the long-term progress of the markets, and that rescinding it could simplify market construction and cut back prices whereas letting competitors and innovation form how fairness markets evolve. Atkins dissented from Regulation NMS when it was first adopted, and the proposal displays a long-held objection now carried into Fee coverage.

The Fee’s rationale rests on how far buying and selling expertise has superior since 2005. The authentic framework was constructed when human merchants had been slower to replace quotations and could possibly be swayed by access-fee concerns; the SEC now argues that automated buying and selling and trendy order-routing methods can handle execution high quality and keep away from locked or crossed markets with no prescriptive federal mandate. In a associated motion the identical day, the Fee prolonged by one 12 months — from November 2026 to November 2027 — the compliance date for the 2024 Regulation NMS amendments protecting minimal pricing increments and the decreased access-fee caps beneath Rule 610(c), giving the market extra time whereas the broader rethink proceeds.

The proposal carries vital implications for finance professionals throughout the US buying and selling ecosystem. Rule 611 underpins order-routing methods, smart-order-router design, alternate connectivity, market-data consumption and compliance surveillance, and its elimination would unwind assumptions embedded in buying and selling infrastructure for twenty years. Dealer-dealers, exchanges, different buying and selling methods, wholesalers, market makers and institutional buyers would face contemporary questions on greatest execution, displayed liquidity and venue economics, because the regulatory assure of intermarket value precedence would not apply. Chief monetary officers and heads of buying and selling at affected companies would wish to reassess how execution high quality is measured and evidenced in a market not ruled by a federal trade-through prohibition.

It is a decisive shift within the Fee’s philosophy beneath Atkins towards competitors, market-driven outcomes and decreased regulatory complexity. Rescinding a cornerstone rule reasonably than amending it signifies an urge for food for structural change reasonably than incremental adjustment, and it locations the burden on market forces and present expertise to protect execution high quality that the rule was designed to guard. Critics will query whether or not eradicating obligatory value safety may drawback retail and smaller buyers who profit most from the assure, an challenge prone to dominate the session.

The proposal is open for public remark and isn’t ultimate, so its final form will depend upon the responses the Fee receives. Buying and selling companies, exchanges and compliance groups ought to deal with the session interval because the second to mannequin the operational and best-execution penalties of a market with out Rule 611, reasonably than ready for a ultimate rule. Whether or not the Fee proceeds as proposed or moderates the change in response to business suggestions, the course of journey towards a lighter-touch, competition-led market construction now seems to be firmly set, and companies that put together early for that surroundings might be higher positioned than people who assume the established order holds.