SEC targets Regulation NMS: Will dismantling Rule 611 unlock institutional DeFi?
The proposal to rescind the 20-year-old trade-through rule removes a structural barrier for tokenized equities on AMMs.
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Executive summary
On June 11, 2026, the Securities and Exchange Commission (SEC) submitted a proposal to rescind Rule 611 and Rule 610(e) of Regulation NMS, according to a report by CryptoSlate. These two decades-old rules govern trade-throughs and locked quotes, forcing traditional brokers to execute stock trades at the National Best Bid and Offer (NBBO) across protected venues. While designed to protect retail investors from inferior execution, this framework has acted as a structural barrier to automated market makers (AMMs) and decentralized finance (DeFi) platforms.
AMMs price assets through liquidity pools and bonding curves rather than order books, making it mathematically and operationally impossible to comply with Rule 611's rigid routing requirements. Rule 610(e) raises a related issue, as AMM price drift can cause on-chain prices to lock or cross the displayed NBBO. The SEC's proposal, championed by Chairman Paul Atkins, aims to simplify market structure, reduce transaction costs, and foster technological innovation. If finalized, this shift could pave the way for institutional trading of tokenized equities on public or permissioned blockchains.
Why it matters
The primary impact of this regulatory shift is structural rather than immediate. Historically, regulatory announcements of this scale do not immediately translate into spot trading volume spikes, as the rulemaking process involves extensive public comment periods. However, the removal of Rule 611 fundamentally alters the market structure for real-world asset (RWA) tokenization.
From a capital flows perspective, traditional financial institutions have avoided deploying capital into AMM-based equity pools due to the legal liability of violating trade-through rules. Rescinding the rule shifts the compliance standard to "best execution." Under a best-execution framework, broker-dealers can evaluate the execution quality of an AMM over time, taking into account liquidity depth and slippage, rather than requiring per-trade price matching. This is highly compatible with blockchain architecture and could unlock substantial institutional capital flows into DeFi protocols.
While speculative assets often experience sharp price moves on low trading volume during regulatory rumors, sustainable institutional adoption of tokenized equities will require deep, consistent trading volume in permissioned pools to prove the viability of the AMM model to traditional regulators. The primary beneficiaries of this change will be high-throughput layer-1 blockchains and established AMM protocols capable of hosting permissioned liquidity pools. However, market participants should note that tokenized equities still face significant unresolved hurdles, including securities registration, custody requirements, and investor-rights frameworks. Furthermore, traditional stock exchanges like the NYSE and Nasdaq may lobby heavily against the proposal to protect their execution monopolies, which could lead to prolonged legal battles and suppress immediate trading volume growth.
What to watch — next 72 hours
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Bottom line
The most likely outcome is a multi-year transition where the SEC rescinds Rule 611 and introduces 'innovation exemptions' for permissioned on-chain trading, carrying a 55% probability. The single biggest risk is pushback and litigation from traditional exchanges (NYSE/Nasdaq) seeking to protect their market share, which could delay implementation. Traders should watch for the close of the SEC public comment period and any draft frameworks for the proposed 'innovation exemptions' to gauge the timeline of institutional adoption.
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Evidence & Sources
How we reached this analysis — traceable to verifiable data, not model guesswork.
- Primary source
- CryptoSlate
- Verified data
- Historical moves checked against real Coinbase price data (3 events).
- Track record
- Graded against the real market move when we still published forecasts. We stopped — see how we work now. .
- AI confidence
- 75/100 — an estimate, not a guarantee.
- Published
- Jun 13, 2026 · accuracy last checked Jul 13, 2026
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