The Securities and Exchange Commission has put forward a proposal to rescind Rules 611 and 610(e) under Regulation NMS, the set of market structure rules first adopted in 2005 to standardize how orders are routed and executed across U.S. stock exchanges. Rule 611, often referred to as the Order Protection Rule or trade-through rule, requires trading venues to avoid executing trades at prices inferior to the best displayed quotations available elsewhere in the market. Rule 610(e) is part of the broader access provisions that govern how market participants connect to and interact with published quotations, including limits tied to fees charged for accessing the best available prices.
Regulation NMS was designed to promote a fair and orderly national market system by linking together the many exchanges and trading venues that make up U.S. equities markets. The order protection and access rules have functioned as some of the most consequential — and most debated — pillars of that framework, shaping how brokers route orders, how exchanges compete on price and speed, and how market makers manage the economics of providing liquidity.
The proposal to rescind these specific provisions arrives as the SEC pursues a wider reassessment of rules it says may impose unnecessary costs or complexity on market participants. Reports indicate the agency separately proposed pulling back climate-related disclosure requirements around the same period, suggesting a pattern of deregulatory review spanning both market structure and corporate disclosure rules under the current commission leadership.
Because Rules 611 and 610(e) touch the mechanics of trade execution and quote access, any change would need to work through the SEC's formal rulemaking process, which typically includes a public comment period before any final rule is adopted. Market participants, exchanges, broker-dealers, and investor advocacy groups are likely to weigh in given the rules' long-standing role in shaping competitive dynamics among trading venues.
Supporters of rescission may argue that the original rules, drafted for a market structure that has evolved substantially over the past two decades, no longer reflect current trading technology, venue competition, or investor needs. Critics, on the other hand, may contend that removing order protection safeguards could reintroduce inconsistencies in execution quality or reduce assurances that investors receive the best available price when their orders are routed.
Given that this development has been corroborated by a limited number of sources with moderate cross-source agreement, some details of the proposal's scope, timeline, and specific rationale remain to be clarified as the SEC releases fuller documentation and opens the matter to public comment.
Market Impact
If finalized, rescinding Rules 611 and 610(e) could reshape how exchanges and alternative trading systems compete for order flow, potentially altering routing practices among brokers and market makers who have built systems around the current order protection framework. Equity market infrastructure providers, exchange operators, and high-frequency trading firms are among the participants most likely to be affected by any resulting changes to execution obligations and fee structures.
Because the proposal is still in its early stages and subject to notice-and-comment rulemaking, immediate market impact is expected to be limited; however, the announcement itself may prompt discussion among exchanges, broker-dealers, and investor groups about the future shape of U.S. equity market structure regulation.
The proposed rescission of Rules 611 and 610(e) marks a notable step in the SEC's ongoing reevaluation of longstanding market structure rules, and its ultimate impact will depend on how the rulemaking process unfolds in the months ahead.
Frequently Asked Questions
What are Rules 611 and 610(e) of Regulation NMS?
Rule 611, known as the Order Protection Rule, requires trading venues to avoid executing trades at prices worse than the best publicly displayed quotes elsewhere in the market. Rule 610(e) is part of the broader access provisions of Regulation NMS that govern how market participants connect to and interact with published quotations, including related fee limitations.
Why is the SEC proposing to rescind these rules?
The available information indicates the SEC is reassessing rules adopted under previous leadership, including both market structure rules and disclosure requirements, as part of a broader deregulatory review, though the specific rationale for this proposal has not been fully detailed.
Has the SEC finalized this change?
No. The rescission has only been proposed. Any final rule would typically follow a public comment period and further SEC action before taking effect.
Who would be most affected if these rules are rescinded?
Exchanges, broker-dealers, market makers, and other participants involved in equity trade execution and order routing would likely be most affected, since these rules directly govern how orders are protected and quotes are accessed across trading venues.