2026-19121NoticeWallet

NYSE Texas Preps for 23-Hour Trading Halt Recoveries

Published Date: 9/18/2026

Notice

Summary

NYSE Texas is updating its rules to handle trading pauses better when the whole market hits a Level 3 circuit breaker, especially now that trading runs 23 hours a day, 5 days a week. This change helps trading restart smoothly after big market shocks, keeping things fair and orderly for all traders. The new rule is effective immediately, so traders and investors should be ready for these quicker restarts during extended hours.

Analyzed Economic Effects

2 provisions identified: 1 benefits, 1 costs, 0 mixed.

Level 3 halts resume at 4:00 a.m. ET

If the S&P 500 falls 20% in a single day (a Level 3 market-wide circuit breaker), trading will halt and will not resume until 4:00 a.m. ET or later on the following trading day. The rule change codifies that resumption time even as some exchanges expand hours to 23 hours per day starting December 6, 2026.

NYSE Texas not adopting 23/5 trading now

The Exchange states it does not intend to implement 23 hours-per-day, 5-days-per-week (23/5) trading at this time, while several other exchanges plan overnight sessions from 9:00 p.m. ET to 4:00 a.m. ET starting December 6, 2026. Traders who wanted to use NYSE Texas for overnight trading should not expect overnight sessions on this venue now.

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Key Dates

Effective Date
Published Date
9/4/2026
9/18/2026

Department and Agencies

Department
Independent Agency
Agency
Securities and Exchange Commission
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