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Polymarket US operates nearly 24/7, with a recurring weekly maintenance window every Thursday from 2:00–6:00 AM ET. Trading may also be temporarily suspended if technical issues, emergency maintenance, or other operational needs require action to maintain security, integrity, or orderly market operation.

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Emergency Maintenance

Trading may be paused without prior notice to protect market participants or ensure system stability. Service resumes once operational integrity is restored.

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Reporting Schedule

Daily market and operational reporting occurs as of 5:00 PM Eastern Time (ET) each business day. This timestamp is used for performance metrics, reconciliations, and regulatory recordkeeping.

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Compliance Notice

All trading activity is governed by the Polymarket US Exchange Rulebook, applicable U.S. regulations, and internal operational procedures. Trading availability may be adjusted when necessary to maintain compliance, transparency, and market integrity.