NYSE National Updates Best-Execution Requirements
Published Date: 6/12/2026
Notice
Summary
NYSE National is rolling out a new rule called 11.5310 to make sure traders get the best prices when buying or selling stocks. This change replaces an old rule and aims to protect customers by improving how orders are handled. The new rule is effective immediately, so traders and their teams need to follow it right away to keep things fair and efficient.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
Stronger Best-Execution Protections for Investors
If you trade or invest, the new Rule 11.5310 requires broker-dealers (ETP Holders and Associated Persons) to use "reasonable diligence" to find the best market and obtain the most favorable price under prevailing conditions. The rule lists five factors to consider (market character including price, volatility, and liquidity; size/type of transaction; number of markets checked; accessibility of the quotation; and terms/conditions of the order), prohibits improper interpositioning, places the burden on a retail firm to justify using a broker's broker (with examples such as crossed retail orders), and says a customers instruction to send an order to a particular market relieves the firm of further best-execution obligation; the rule was filed May 29, 2026, comments are due by July 6, 2026, and the Commission may suspend the rule within 60 days of filing.
New Best-Execution Duties for ETP Holders
The Exchange adopted new Rule 11.5310, replacing Rule 11.12.10, that requires Equity Trading Permit (ETP) Holders and their Associated Persons to use "reasonable diligence" when handling customer orders. The change harmonizes NYSE National's standards with Nasdaq PHLX and NYSE Rule 5310 and became effective when filed on May 29, 2026.
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Previous / Next Documents
Previous: 2026-11802 — Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Adopt New Rule 11.5310 (Best Execution)
NYSE Arca just rolled out a new rule called 11.5310 to make sure traders and firms always get the best possible deal when handling your stock and options orders. This change affects anyone with trading permits on NYSE Arca and kicks in right away, aiming to protect customers and boost fair trading. No extra costs are mentioned, but it’s a big win for smarter, faster trades starting now!
Next: 2026-11804 — Self-Regulatory Organizations; NYSE Texas, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Adopt New Rule 11.5310 (Best Execution)
NYSE Texas just rolled out a new rule called 11.5310 to make sure brokers and firms always get the best prices when handling customer orders. This change helps protect customers by aiming for faster, smarter trades at the best market prices. The rule is effective immediately, so everyone involved in trading on NYSE Texas should get ready to follow it right away.