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Jan 21, 2028 EXPIRATION

O $52.50 Put

O280121P00052500

Latest saved OI765Oct 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 $52.50 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. 7653820 2026-10-02: 714 OI2026-10-05: 714 OI2026-10-06: 716 OI2026-10-07: 716 OI2026-10-08: 718 OI2026-10-09: 718 OI2026-10-13: 719 OI2026-10-14: 716 OI2026-10-15: 716 OI2026-10-16: 716 OI2026-10-21: 765 OI2026-10-23: 765 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, 2026Viewing7650
Oct 21, 2026765+49
Oct 16, 20267160
Oct 15, 20267160
Oct 14, 2026716-3
Oct 13, 2026719+1
Oct 09, 20267180
Oct 08, 2026718+2
Oct 07, 20267160
Oct 06, 2026716+2
Oct 05, 20267140
Oct 02, 2026714No prior observation