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Contract OI history

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Dec 18, 2026 EXPIRATION

SO $85.00 Put

SO261218P00085000

Latest saved OI517Oct 23, 2026
Last change+20vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SO $85.00 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. 5172580 2026-10-02: 383 OI2026-10-05: 379 OI2026-10-06: 379 OI2026-10-07: 377 OI2026-10-08: 378 OI2026-10-09: 374 OI2026-10-13: 466 OI2026-10-14: 466 OI2026-10-15: 469 OI2026-10-16: 476 OI2026-10-21: 497 OI2026-10-23: 517 OI Oct 02, 2026Oct 23, 2026

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

SO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026517+20
Oct 21, 2026Viewing497+21
Oct 16, 2026476+7
Oct 15, 2026469+3
Oct 14, 20264660
Oct 13, 2026466+92
Oct 09, 2026374-4
Oct 08, 2026378+1
Oct 07, 2026377-2
Oct 06, 20263790
Oct 05, 2026379-4
Oct 02, 2026383No prior observation