PolygonIO incident

US equities aggregate bars not updating

Resolved after 14 hours 3 minutes, affecting Market Data REST Endpoints and Market Data WebSocket Channels, on September 9, 2026.

monitoring Sep 09, 2026, 12:58 AM UTC

A fix has been implemented and we are monitoring the results.

Started
Sep 09, 2026, 12:26 AM UTC
Resolved
Sep 09, 2026, 02:29 PM UTC
Duration
14h 3m
Detected by Pingoru
Sep 09, 2026, 12:26 AM UTC

Affected components

Market Data REST EndpointsMarket Data WebSocket Channels

Update timeline

  1. investigating Sep 09, 2026, 12:26 AM UTC

    Beginning around 6:46 PM ET, aggregate bars for roughly two-thirds of US equities are missing from the v2 aggregates endpoint, the v2 stocks snapshot, and the A/AM websocket channels. Trades and the v3 snapshot are unaffected.

  2. identified Sep 09, 2026, 12:42 AM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Sep 09, 2026, 12:58 AM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Sep 09, 2026, 02:29 PM UTC

    This incident has been resolved.

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