2026-20606NoticeWallet

Nasdaq Texas Gears Up for 23-Hour Trading Frenzy Halt Rules

Published Date: 10/8/2026

Notice

Summary

Nasdaq Texas is updating its rules to handle how 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.

Analyzed Economic Effects

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

Keeps Level 3 Halt Reopen Time at 4:00 a.m. ET

If a Level 3 market-wide circuit breaker (a 20% S&P 500 decline) triggers a halt, trading on Nasdaq Texas (and, as coordinated, other SROs) will remain halted until 4:00 a.m. Eastern Time or later on the following trading day. This preserves the current practice of not reopening during overnight sessions that start at 9:00 p.m. ET.

Overnight Trading Sessions Planned Dec 6, 2026

Several exchanges intend to begin overnight trading sessions from 9:00 p.m. ET to 4:00 a.m. ET starting December 6, 2026, expanding market hours to 23 hours per day, 5 days per week. This increases the hours when customers may be able to trade, subject to each exchange's operational decisions.

Nasdaq Texas Will Not Launch 23/5 Trading Now

Nasdaq Texas states it does not intend to implement 23-hours-per-day, 5-days-per-week trading (23/5 Trading) at this time, even though other exchanges plan overnight sessions. Customers of Nasdaq Texas therefore should not expect overnight trading on this venue currently.

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Key Dates

Effective Date
Published Date
9/25/2026
10/8/2026

Department and Agencies

Department
Independent Agency
Agency
Securities and Exchange Commission
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