SEC's NMS Proposal Called Year's Most Consequential Crypto Rule

The Securities and Exchange Commission's proposal to rescind key National Market System rules could fundamentally reshape how cryptocurrency trading platforms operate within the U.S. regulatory framework. Benchmark, a research firm tracking crypto regulation, designated the SEC's NMS proposal as the year's most consequential U.S. crypto rule, signaling the magnitude of potential market-structure changes ahead.

The proposal targets Rules 611 and 610(e) under Regulation SHO, which have long governed order handling and market access in traditional securities markets. By rescinding these rules for crypto assets, the SEC would lower barriers for blockchain-based trading platforms to enter regulated markets, a shift that could accelerate integration of decentralized and tokenized trading infrastructure into the formal securities ecosystem.

Benchmark's analysis states the SEC's proposal could reshape crypto trading by easing entry for blockchain platforms, impacting market dynamics and investor protections. The firm's ranking underscores how significant this regulatory move is relative to other crypto policy developments this year. The spot Bitcoin ETF approvals in early 2024 were widely considered the year's biggest regulatory win for crypto. Benchmark's assessment suggests the NMS proposal carries comparable weight in terms of long-term structural implications.

The proposal arrived last week in mid-June, during a period of relative regulatory stability following years of uncertainty about how existing securities laws apply to digital assets. The SEC has been gradually moving toward integrating crypto into existing frameworks rather than creating entirely new regulatory pathways. This NMS proposal fits that pattern, treating blockchain trading venues as potential participants in the National Market System rather than outliers requiring separate oversight.

The proposal carries genuine trade-offs. Easing entry for blockchain platforms could reduce regulatory oversight in certain areas, raising questions about investor protection standards. Critics argue that rescinding market structure rules designed to prevent trading abuses and ensure fair access could create competitive imbalances between traditional exchanges and blockchain-based alternatives. The impact on market stability and systemic risk remains unclear, particularly if multiple fragmented blockchain trading venues operate under different compliance regimes.

The SEC has not yet specified implementation timelines or whether the rescission would apply uniformly across all crypto asset classes or only certain tokens. The proposal likely faces a comment period before finalization, giving industry participants and consumer advocates time to weigh in on potential consequences.

If adopted, the proposal could accelerate the launch of regulated blockchain trading platforms and potentially reshape order routing, price discovery, and liquidity provision in crypto markets. Whether this ultimately benefits retail investors or primarily advantages sophisticated market participants and platform operators will depend heavily on how the SEC shapes final rules and enforcement priorities.