# 2026-11803: NYSE National Updates Best-Execution Requirements

2026-11803, Self-Regulatory Organizations; NYSE National, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Adopt New Rule 11.5310 (Best Execution), is a Federal Register notice from Securities and Exchange Commission published 2026-06-12, effective 2026-05-29; PRIA reads it as touching household money (as of 2026-06-19).

- Canonical: https://policyrisk.com/federal-register/2026-11803
- As of: 2026-06-19
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-11803
- Title: Self-Regulatory Organizations; NYSE National, Inc.; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Adopt New Rule 11.5310 (Best Execution)
- Type: Notice
- Agencies: Securities and Exchange Commission
- Citation: 91 FR 35758
- Published: 2026-06-12
- Effective: 2026-05-29
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-06-19

## In one line

NYSE National Updates Best-Execution Requirements

## 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.

## Effects PRIA read

- New Best-Execution Duties for ETP Holders: benefit, low. 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…
- Stronger Best-Execution Protections for Investors: benefit, medium. 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,…

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## Sources
- [2026-11803 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/12/2026-11803/self-regulatory-organizations-nyse-national-inc-notice-of-filing-and-immediate-effectiveness-of)
- [2026-11803 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-12/pdf/2026-11803.pdf)

## Related
- [Previous: 2026-11802, Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate…](https://policyrisk.com/federal-register/2026-11802)
- [Next: 2026-11804, Self-Regulatory Organizations; NYSE Texas, Inc.; Notice of Filing and Immediate…](https://policyrisk.com/federal-register/2026-11804)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-11803 (as of 2026-06-19).