# 2026-19124: NYSE American Joins 23-Hour Trading Frenzy with Halt Restart Rules

2026-19124, Self-Regulatory Organizations; NYSE American LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Amend Rule 7.12E Concerning the Resumption of Trading Following a Level 3 Market-Wide Circuit Breaker Halt in Connection With the Industry's Expansion of Trading Hours to 23 Hours per Day, 5 Days per Week, is a Federal Register notice from Securities and Exchange Commission published 2026-09-18, effective 2026-09-04; PRIA reads it as touching household money (as of 2026-09-25).

- Canonical: https://policyrisk.com/federal-register/2026-19124
- As of: 2026-09-25
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-19124
- Title: Self-Regulatory Organizations; NYSE American LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Amend Rule 7.12E Concerning the Resumption of Trading Following a Level 3 Market-Wide Circuit Breaker Halt in Connection With the Industry's Expansion of Trading Hours to 23 Hours per Day, 5 Days per Week
- Type: Notice
- Agencies: Securities and Exchange Commission
- Citation: 91 FR 59289
- Published: 2026-09-18
- Effective: 2026-09-04
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-09-25

## In one line

NYSE American Joins 23-Hour Trading Frenzy with Halt Restart Rules

## Summary

NYSE American is updating its rules to handle trading restarts after a big market pause called a Level 3 circuit breaker. This change matches the new longer trading hours—23 hours a day, 5 days a week—so trading can resume smoothly and safely. Traders and investors will see these updates take effect right away, helping keep the market steady during wild swings.

## Effects PRIA read

- Level 3 Halt Resumption at 4:00 a.m. ET: benefit, medium. If the S&P 500 falls enough to trigger a Level 3 market-wide circuit breaker (a 20% single-day decline), trading on NYSE American will be halted and will not resume until 4:00 a.m. ET or later on the following trading day. This rule change codifies that resumption time even after the industry expan…

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## Sources
- [2026-19124 on federalregister.gov](https://www.federalregister.gov/documents/2026/09/18/2026-19124/self-regulatory-organizations-nyse-american-llc-notice-of-filing-and-immediate-effectiveness-of)
- [2026-19124 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-09-18/pdf/2026-19124.pdf)

## Related
- [Previous: 2026-19123, Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate…](https://policyrisk.com/federal-register/2026-19123)
- [Next: 2026-19125, Self-Regulatory Organizations; New York Stock Exchange LLC; Notice of Filing an…](https://policyrisk.com/federal-register/2026-19125)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-19124 (as of 2026-09-25).