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Contract OI history

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Mar 19, 2027 EXPIRATION

O $55.00 Put

O270319P00055000

Latest saved OI880Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $55.00 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. 8804400 2026-10-02: 868 OI2026-10-05: 869 OI2026-10-06: 872 OI2026-10-07: 872 OI2026-10-08: 872 OI2026-10-09: 872 OI2026-10-13: 872 OI2026-10-14: 877 OI2026-10-15: 877 OI2026-10-16: 876 OI2026-10-21: 877 OI2026-10-23: 880 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, 2026Viewing880+3
Oct 21, 2026877+1
Oct 16, 2026876-1
Oct 15, 20268770
Oct 14, 2026877+5
Oct 13, 20268720
Oct 09, 20268720
Oct 08, 20268720
Oct 07, 20268720
Oct 06, 2026872+3
Oct 05, 2026869+1
Oct 02, 2026868No prior observation