Open interest

Call and put open interest by strike or by expiry with the change since the session before, at the latest close (or date's).

• Parameter symbol (string, required): Underlying, e.g. AAPL.
• Parameter by (string): strike or expiry.
• Parameter expiry (string): One expiry, YYYY-MM-DD. Default all.
• Parameter date (string): A past session, YYYY-MM-DD: as it stood at the close. Default the latest.
• Parameter limit (integer): Rows per page, up to 1000.
• Parameter cursor (string): next_cursor from the previous page.
• strike (number): Strike; null by expiry.
• expiry (string): YYYY-MM-DD; null by strike across all expiries.
• call_open_interest, put_open_interest (integer): Open contracts.
• call_open_interest_change, put_open_interest_change (integer): Change since the session before.
• GET /options/open-interest: Open interest. Call and put open interest by strike or by expiry with the change since the session before, at the latest close (or date's).

Updated 2026-11-06 15:47 UTC