2026-22752NoticeWallet

IEX Plans How Trading Restarts After Market-Wide Panic Button

Published Date: 11/9/2026

Notice

Summary

Investors Exchange (IEX) is updating its rules on how trading restarts after a big market-wide pause called a Level 3 circuit breaker. This change gets ready for other exchanges trading nearly 24/5, making sure IEX’s system stays smooth and fair. Traders and investors will see quicker, clearer trading resumptions with no extra costs or delays starting right away.

Analyzed Economic Effects

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

Keep 4:00 a.m. restart after Level 3 halt

If a Level 3 market-wide circuit breaker (a 20% S&P 500 decline) triggers a market halt, trading on IEX will remain halted until 4:00 a.m. Eastern Time or later on the following trading day. This rule explicitly preserves the current resumption time even after other exchanges expand to 23 hours per day, 5 days per week.

IEX keeps 8:00 a.m.–5:00 p.m. sessions

When other exchanges begin expanded 23/5 trading on December 6, 2026, IEX will not change its trading sessions and will continue to operate Pre-Market from 8:00 a.m. to 9:30 a.m., Regular Market from 9:30 a.m. to 4:00 p.m., and Post-Market from 4:00 p.m. to 5:00 p.m. You will not be able to trade on IEX overnight starting on December 6, 2026.

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Key Dates

Effective Date
Published Date
11/2/2026
11/9/2026

Department and Agencies

Department
Independent Agency
Agency
Securities and Exchange Commission
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