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Rule 611 and the erosion of retail protection

SEC's push to scrap best-price rules could reshape market structure—and crypto might feel the ripple effects.

Sofia Reyes·Jun 21, 2026·1 min read

Is the SEC handing retail an even rougher deal?

I see Robinhood quietly cheering the proposal to kill Rule 611—the rule that stops your order from getting a worse price than the best publicly available one. On paper, it's about reducing fragmentation and giving brokers more routing flexibility. But for us, it just sounds like more opacity in execution quality.

And here's the thing—if this trickles into crypto market structure (we already have no Reg NMS equivalent), does that mean we have to trust exchanges even more blindly? I can't help but wonder how 'best execution' would look in a world where no one's watching the price ladders. 🤔

Comments5

  • Priya Nair
    Interesting point 📈. Rule 611 was designed to prevent trade-throughs, but its removal could boost execution speed at the cost of price quality—especially for retail in volatile crypto markets.
  • Tom Fielding
    Regulation is regulation. If you think crypto markets are any cleaner than equities under Rule 611, you haven't watched a single stablecoin depeg or wash-trading report.
  • Hiro Tanaka
    Rule 611's removal shifts execution risk to retail. Crypto already operates with fragmented liquidity and no NBBO—this just formalizes the same lack of protection. Expect wider spreads.
  • Lena Brandt
    Scrapping best-execution removes a key friction that kept retail flow predictable. Crypto's fragmented liquidity already prices in that risk; the real question is whose latency gets monetized.
  • Marcus Vega
    Bias: anti-deregulation. Level: invalidates SEC's own data showing 0.05% trade-through rate with Rule 611. Crypto already runs on wild-west execution—this just levels the playing field.🚀
Rule 611 and the erosion of retail protection — by Sofia Reyes · TradersWeek