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Contract OI history

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Dec 18, 2026 EXPIRATION

O $55.00 Put

O261218P00055000

Latest saved OI3,638Oct 23, 2026
Last change+52vs 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. 3,6381,8190 2026-10-02: 3,487 OI2026-10-05: 3,504 OI2026-10-06: 3,503 OI2026-10-07: 3,503 OI2026-10-08: 3,504 OI2026-10-09: 3,502 OI2026-10-13: 3,500 OI2026-10-14: 3,518 OI2026-10-15: 3,504 OI2026-10-16: 3,546 OI2026-10-21: 3,586 OI2026-10-23: 3,638 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, 2026Viewing3,638+52
Oct 21, 20263,586+40
Oct 16, 20263,546+42
Oct 15, 20263,504-14
Oct 14, 20263,518+18
Oct 13, 20263,500-2
Oct 09, 20263,502-2
Oct 08, 20263,504+1
Oct 07, 20263,5030
Oct 06, 20263,503-1
Oct 05, 20263,504+17
Oct 02, 20263,487No prior observation