Alpaca incident

Intermittent Portfolio History Availability

Resolved after 44 minutes, affecting Portfolio History Endpoint, on July 21, 2026.

postmortem Jul 21, 2026, 09:13 PM UTC

On July 21, 2026, between approximately 4:46 AM and 6:37 AM ET, customers may have experienced intermittent errors for recent Portfolio History requests due to a processing compatibility issue. Our engineering teams deployed a fix and monitored the service through recovery. Portfolio History request processing is operating normally.

Started
Jul 21, 2026, 09:55 AM UTC
Resolved
Jul 21, 2026, 10:39 AM UTC
Duration
44m
Detected by Pingoru
Jul 21, 2026, 09:55 AM UTC

Affected components

Portfolio History Endpoint

Update timeline

  1. investigating Jul 21, 2026, 09:55 AM UTC

    We’re investigating an issue causing intermittent errors and missing data for some Portfolio History requests. The impact appears limited to a subset of recent-date queries, and we’re actively working on a fix.

  2. identified Jul 21, 2026, 10:16 AM UTC

    We have identified the root cause and currently working toward mitigation.

  3. resolved Jul 21, 2026, 10:39 AM UTC

    We have applied necessary fixed and issue is resolved now ,Please reach out to us if still having issue with portfolio history.

  4. postmortem Jul 21, 2026, 09:13 PM UTC

    On July 21, 2026, between approximately 4:46 AM and 6:37 AM ET, customers may have experienced intermittent errors for recent Portfolio History requests due to a processing compatibility issue. Our engineering teams deployed a fix and monitored the service through recovery. Portfolio History request processing is operating normally.

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