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Jan 21, 2028 EXPIRATION

O $57.50 Put

O280121P00057500

Latest saved OI587Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $57.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5872930 2026-10-02: 572 OI2026-10-05: 576 OI2026-10-06: 587 OI2026-10-07: 587 OI2026-10-08: 587 OI2026-10-09: 587 OI2026-10-13: 587 OI2026-10-14: 587 OI2026-10-15: 587 OI2026-10-16: 587 OI2026-10-21: 587 OI2026-10-23: 587 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

O contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5870
Oct 21, 20265870
Oct 16, 20265870
Oct 15, 20265870
Oct 14, 20265870
Oct 13, 20265870
Oct 09, 20265870
Oct 08, 20265870
Oct 07, 20265870
Oct 06, 2026587+11
Oct 05, 2026576+4
Oct 02, 2026572No prior observation