Alpaca experienced a minor incident on July 21, 2026 affecting Portfolio History Endpoint, lasting 44m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- 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.
- identified Jul 21, 2026, 10:16 AM UTC
We have identified the root cause and currently working toward mitigation.
- 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.
- 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.