SEC plan reshapes rules for tokenized stocks

TLDR

The SEC has proposed scrapping key US stock market rules that made it almost impossible to trade tokenized US equities on DeFi platforms.

1. The plan would rescind Regulation NMS Rules 611 and 610(e), shifting toward a broker-level best execution standard and is open for a 60 day comment period.
2. These rules were structurally incompatible with automated market makers, so removing them could unlock onchain trading of compliant tokenized US stocks, though many legal hurdles remain.
3. Nothing changes immediately, but tokenization pilots, an expected innovation exemption, and final rules targeted around early 2027 are the critical things to watch.

Deep Dive

1. What The SEC Is Actually Proposing

The SEC has proposed to rescind Regulation NMS Rule 611, the Order Protection Rule, and Rule 610(e), which bans locked and crossed quotes, after nearly two decades of use in US equity markets.

Rule 611 currently forces trades in covered stocks to be executed at the national best bid or offer (NBBO), while Rule 610(e) restricts displaying quotes that match or cross those best prices across venues. The SEC says the overhaul is meant to simplify market structure and reduce costs, not to weaken investor protection.

The proposal is now in a 60 day public comment window, with analysts expecting final rules around Q1 2027 and noting the SEC may grant limited exemptive relief sooner for tokenization pilots. CoinMarketCaps coverage of the proposal to rescind Rules 611 and 610(e) summarizes the timeline and intent.

2. Why This Matters For Tokenized Stocks And DeFi

Tokenized stocks are blockchain instruments that reference real equities, often via custodial backing or synthetic exposure, but they still sit under securities law if they track US-listed shares.

Under Rule 611 and 610(e), any DeFi pool trading tokenized US stocks would, in practice, constantly trade through better prices or show quotes that lock or cross the NBBO, which makes AMM-based venues look like illegal trading centers. Galaxy Digitals Alex Thorn calls removing these rules one of the biggest unlocks yet for tokenized equities since AMMs cannot practically ingest SIP data, route orders across exchanges, or halt swaps to respect NBBO.

If those rules are removed, the SEC is expected to lean on FINRA Rule 5310s principles based best execution regime at the broker level, which can be interpreted in a way that tolerates AMM style execution while still imposing duties on intermediaries.

3. What Still Needs To Happen And What To Watch

Even with 611 and 610(e) gone, tokenized US stocks would still need to address:

1. Where venues register, for example as exchanges or ATSs, and how they integrate with existing clearing and settlement.
2. How tokens map to shareholder rights, disclosures, and corporate actions so that onchain claims match offchain equity.
3. How cross-border platforms handle that US regulators treat tokenized stocks as securities, a pattern echoed by moves like South Koreas classification of tokenized equities under its capital markets laws.

Analysts expect the SEC to pair the NMS changes with an innovation exemption tailored to digital versions of existing public equities, plus exemptive relief for early tokenization pilots before full rule repeal, as discussed in a follow-on CoinsKid analysis of the broader Reg NMS and tokenization impact.

Conclusion

The SECs plan to scrap Rules 611 and 610(e) is less about crypto directly and more about removing a core incompatibility between US stock rules and AMM-style trading that underpins DeFi.

If the proposal survives the comment process and is paired with targeted exemptions, it could turn tokenized US equities from a regulatory edge case into a formally supported structure, shifting tokenized stocks from gray-market experiments toward regulated infrastructure.