For AI agents: visit https://docs.alpaca.markets/us/v1.1/llms.txt for an index of all pages formatted in Markdown and endpoints in OpenAPI. Append .md to any documentation page URL to get its markdown version.
Jump to Content
Region: US
Home
Documentation
API Reference
Changelog
Region: US
Log In
Trading Dashboard
Broker Dashboard
Changelog
Search
Ask AI
Log In
Trading Dashboard
Broker Dashboard
Home
Documentation
API Reference
Changelog
July 21st, 2026
Improved
Transfer stream events can send an empty "status_from"
July 20th, 2026
Improved
Clarified the archive-portfolio description
July 20th, 2026
Added
"fractionable" field added to US treasury and corporate bond schemas
July 20th, 2026
Fixed
Portfolio history numeric fields can be null
July 20th, 2026
Added
New Corporate Actions events streaming endpoint (SSE)
July 16th, 2026
Improved
"order_id" path parameter now typed as a UUID
July 16th, 2026
Improved
"phone_number" on the Contact schema is now optional and nullable
July 16th, 2026
Improved
Deprecated asset fields are now optional in responses
July 16th, 2026
Added
New Tokenization Request lookup endpoints
July 16th, 2026
Added
Idempotent locate creation with Idempotency-Key
4 of 11
