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23×5 Testing Opportunities and Go-Live Readiness – Cboe EDGX, Cboe One, and MEMX

Overview CTA/UTP, NYSE Arca, Cboe EDGX, MEMX, and 24X have confirmed readiness to support 23×5 trading hours. Beginning December 6, 2026 (for the December 7, 2026, trading day), these venues will introduce a new Overnight Trading Session, extending the U.S. equity trading week to approximately 23 hours per day, five days per week. The CTA/UTP … More

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Data

Retirement of the Cboe BZX Last Sale Feed

Effective November 16th, 2026, dxFeed will deliver Cboe BZX trades from the TOP feed after Cboe retires its Last Sale feed. Customers may see fewer Trade and TimeAndSale events and no trade ID in TimeAndSale events. No action is required.

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Data

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Testing Participation

23/5 Trading Hours Testing Participation 2026

CTA/UTP, NYSE Arca, Cboe EDGX, MEMX and 24X have confirmed their readiness to support 23/5 trading hours. This change introduces a new Overnight Trading Session. User Acceptance Tests (UAT) for the new schedule will be conducted by CTA/UTP and NYSE Arca only. dxFeed will participate in these tests and provide customers with an opportunity to test the new trading schedule.

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Fundamentals

Updates on the Fundamental Equity Data Upgrade

We continue to keep you informed about the major Morningstar data upgrade affecting fundamental data. Our team is working to minimize the impact on you and will provide full support throughout the process.