The End of an Era: SEC Proposes Rescission of Regulation NMS Rules 610 and 611

WASHINGTON, D.C. — June 11, 2026 — In a move that signals a seismic shift in the architecture of the United States equity markets, the Securities and Exchange Commission (SEC) announced today that it is seeking to rescind Rules 611 and 610(e) of Regulation National Market System (NMS). This proposal, which marks the most significant regulatory pivot in two decades, aims to dismantle the "Order Protection Rule" and the constraints on access fees that have defined modern high-frequency trading environments since their inception in 2005.

The proposal, unveiled by SEC Chairman Paul S. Atkins, represents a philosophical departure from the interventionist approach that characterized the early 21st-century market landscape. By inviting public discourse on the removal of these cornerstones, the Commission is effectively asking whether the regulations designed to protect investors have, in fact, created a fragmented, overly complex, and costly ecosystem.

Main Facts: The Proposed Regulatory Pivot

At the heart of the SEC’s announcement is the desire to move away from rigid, federally mandated price-protection mechanisms. Rule 611, commonly known as the "Order Protection Rule," requires trading centers to establish, maintain, and enforce policies and procedures designed to prevent "trade-throughs"—transactions that occur at prices inferior to the best-displayed quotes in other markets.

By proposing the rescission of this rule, the Commission is suggesting that the market’s internal competitive forces are now sufficiently mature to ensure best execution without the heavy hand of federal oversight. Simultaneously, the removal of Rule 610(e)—which caps access fees charged by exchanges—suggests an intention to allow market-based pricing for execution services.

Chairman Atkins emphasized that the goal is not to abandon investor protection, but to modernize the mechanisms by which that protection is achieved. "This proposal is intended to simplify market structure and reduce costs for market participants while allowing competition, innovation, and other market forces to shape the continuing evolution of our equity markets," Atkins stated during the press briefing.

Chronology: Two Decades of Market Evolution

To understand the weight of this decision, one must look back at the origins of Regulation NMS.

• 2005: The SEC formally adopts Regulation NMS. The primary objective was to modernize the national market system, ensuring that investors received the best price available across all trading venues. The Order Protection Rule (Rule 611) was the centerpiece of this effort, designed to eliminate the risk of an investor’s order being executed at an inferior price when a better price was available elsewhere.
• 2007–2012: As algorithmic trading gained dominance, observers began to note "unintended consequences." The requirement to chase the best price across fragmented venues led to a proliferation of "dark pools" and high-frequency trading (HFT) firms that utilized latency arbitrage to stay ahead of the NMS-protected quotes.
• 2015–2020: Academic studies and industry white papers began to question the efficacy of the NMS framework. Critics argued that the rules were subsidizing high-speed infrastructure at the expense of long-term institutional investors.
• 2024–2025: Under new leadership, the SEC initiated a comprehensive review of the "market structure footprint," specifically looking at how the NMS rules influenced liquidity fragmentation.
• June 11, 2026: The Commission officially proposes the rescission of Rules 611 and 610(e), initiating a 60-day public comment period.

Supporting Data: Why Change Now?

The Commission’s decision is backed by a growing body of data suggesting that the current market structure is no longer optimizing for the average investor.

The Fragmentation Problem

Data indicates that equity trading is currently dispersed across 16 public exchanges and dozens of off-exchange venues, including dark pools and internalizing broker-dealers. The "protection" afforded by Rule 611 has arguably led to a "race to the bottom" in terms of latency, where market participants spend billions on microwave towers and fiber-optic cables simply to be the first to capture the best bid or offer mandated by NMS.

Access Fee Distortion

Under Rule 610(e), exchanges have been limited in what they can charge for access to their liquidity. Critics argue that these caps have prevented a true market for liquidity from developing. By removing these constraints, the SEC anticipates that exchanges will be able to price their services according to the actual value of their liquidity, potentially reducing the reliance on the "maker-taker" rebate model that many believe incentivizes excessive, non-productive trading volume.

Official Responses and Industry Sentiment

The reaction from Wall Street and policy circles has been swift and divided.

Pro-Reform Advocates

Market participants who favor the rescission argue that the current system is an anachronism. "The technology of 2005 is not the technology of 2026," says one prominent institutional asset manager. "We are currently shackled to a regulatory framework that mandates we trade in a way that benefits high-frequency intermediaries more than the actual capital-market participants."

Skeptics and Consumer Advocates

Conversely, investor advocacy groups have expressed caution. There is a palpable fear that without the mandate to provide the best price, the market could revert to the "pre-NMS" era of fragmented, opaque pricing where retail investors might consistently receive inferior execution. "The SEC must ensure that the ‘market forces’ Chairman Atkins refers to are actually capable of delivering the same level of transparency that NMS forced upon the exchanges," noted a spokesperson for a leading retail investor association.

Implications: A New Market Structure

The implications of this proposal extend far beyond the technical aspects of order routing.

1. The Death of Latency Arbitrage?

If the Order Protection Rule is rescinded, the imperative to be the absolute fastest player on the field may diminish. If trading venues are no longer strictly obligated to route to the "best price" as defined by the current NMS standards, the economic justification for the multi-billion-dollar investment in extreme low-latency infrastructure may evaporate.

2. Evolution of Exchange Business Models

Exchanges will likely be forced to pivot. With the potential for the removal of access fee caps, exchanges will likely experiment with new pricing models. Some may become "premium" venues with higher costs but higher-quality liquidity, while others may cater to cost-conscious, high-volume participants. This would shift the market toward a more tiered ecosystem.

3. Increased Competition Between Venues

Without the uniform mandate of Regulation NMS, venues will have to compete on service, technology, and execution quality rather than simply being a destination for "protected" orders. This could lead to a wave of innovation in how orders are matched and how liquidity is sourced, potentially giving rise to new decentralized or specialized trading protocols.

Conclusion: A Deliberative Path Forward

As the SEC opens the 60-day comment period, the agency has signaled that it intends to take a "careful, deliberative approach." Chairman Atkins’s warning to avoid "repeating the same mistakes that brought us here" serves as a reminder that the Commission is aware of the complexity of this task.

The market is now entering a period of significant uncertainty and opportunity. The rescission of Rules 611 and 610(e) is not merely a policy change; it is a fundamental reassessment of what the SEC’s role should be in a digital, globalized marketplace. For the next two months, the eyes of the financial world will be fixed on Washington as stakeholders weigh in on whether the pillars of the last 20 years should indeed come down to make way for a more streamlined, market-driven future.

Market participants, technology providers, and academic institutions are expected to submit extensive analyses during the comment period. The outcome of this initiative will ultimately determine whether the U.S. equity markets undergo a smooth transition toward a more efficient state or face a period of volatility as they adjust to the new, less-regulated reality.

For now, the status quo remains, but the signal from the SEC is clear: the era of Regulation NMS as we know it is coming to a close. The future of the markets will be defined by the feedback gathered in the coming weeks, and the resulting regulatory framework will likely set the tone for the next generation of financial trading.

Call for Public Participation

The SEC has encouraged all interested parties to review the full proposing release, which is available on the Commission’s website. The 60-day window will be critical for assessing the potential impact on retail investors, institutional funds, and the stability of the broader financial system. All comments submitted to the Federal Register will be public, ensuring that the debate over the future of market structure remains transparent and inclusive.

End of Report.