TLDR
The SEC has proposed scrapping a core 20?year?old equity routing rule, which could reshape how tokenized US stocks and blockchain trading venues are built.
- The SEC wants to rescind Regulation NMS Rule 611 and Rule 610(e), moving from strict best?price routing to a more flexible broker best?execution regime.
- Removing Rule 611 would eliminate a key legal conflict that made DeFi style automated market makers for tokenized US equities effectively impossible under current rules.
- Nothing changes immediately, but a 60 day comment period and a likely multi?year process will determine whether this becomes a real unlock or introduces new fragmentation risks.
Deep Dive
1. What The SEC Proposed
On 11 June 2026, the SEC proposed rescinding Rule 611 of Regulation NMS, the Order Protection Rule, and related Rule 610(e), which govern trade?through protections and locked or crossed markets for US stocks, opening a 60 day public comment window before any final vote.[^1]
Rule 611 has since 2005 required trading centers to prevent executions at prices worse than the national best bid and offer (NBBO), effectively forcing brokers to route orders to the venue with the best displayed price.[^1]
The SEC argues that in todays fragmented, high speed markets this rigid framework may no longer improve execution quality and wants to shift more responsibility back to brokers under a principles based best?execution standard.[^2]
2. Tokenized Stocks And DeFi
Because Rule 611 hard wires NBBO into equity trading, DeFi automated market makers for tokenized US stocks have been described as structurally illegal, since AMMs quote algorithmic prices that frequently trade through NBBO.[^2]
Industry analysts, including Galaxy Digitals Alex Thorn, describe rescinding Rule 611 as one of the biggest unlocks yet for tokenized stocks because it removes that specific conflict and could allow AMM based tokenized equity venues, so long as regulated brokers can show reasonable execution policies.[^2]
CoinMarketCaps own market structure coverage notes that this shift could give blockchain based alternative trading systems a simpler routing environment if they handle regulated tokenized equities, even though the rule does not apply directly to spot crypto markets.[^1]
3. Risks, Timeline, And Next Steps
This is still a proposal. After the 60 day comment period, the SEC can revise, adopt, or drop the change, and one research group expects any final vote only by around Q1 2027 as part of broader Reg NMS reforms.[^2]
Even if Rule 611 is rescinded, big hurdles remain for tokenized US equities, including issuance rules, custody, broker dealer and ATS registration, transfer agents, and investor protection frameworks.[^1]
Some experts warn that removing trade through protections could increase price fragmentation across stock venues, which would make it harder and potentially costlier for crypto platforms that offer tokenized stocks to source a single reliable reference price.[^3]
In the near term nothing operational changes for crypto traders, but builders of tokenized equity and real world asset platforms should track this rulemaking closely because it could redefine what is legally possible.
Conclusion
The SECs move against a key equity routing rule is a structural market structure story that primarily targets how US stocks trade, but it has important second order effects for tokenized equities and blockchain based venues.
If the proposal survives the comment process largely intact, it could remove one of the main legal roadblocks to AMM style tokenized stock trading, while also raising new questions about fragmented pricing and broker responsibilities that crypto platforms will have to navigate.
[^1]: Community analysis of the Rule 611 rescission proposal [^2]: Tokenized stocks focused coverage of the SEC Rule 611 proposal [^3]: Market structure discussion of fragmentation and tokenized equity pricing
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