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Contract OI history

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Dec 18, 2026 EXPIRATION

SO $82.50 Put

SO261218P00082500

Latest saved OI490Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SO $82.50 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. 4902450 2026-10-02: 222 OI2026-10-05: 394 OI2026-10-06: 452 OI2026-10-07: 422 OI2026-10-08: 435 OI2026-10-09: 435 OI2026-10-13: 460 OI2026-10-14: 460 OI2026-10-15: 463 OI2026-10-16: 478 OI2026-10-21: 485 OI2026-10-23: 490 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, 2026Viewing490+5
Oct 21, 2026485+7
Oct 16, 2026478+15
Oct 15, 2026463+3
Oct 14, 20264600
Oct 13, 2026460+25
Oct 09, 20264350
Oct 08, 2026435+13
Oct 07, 2026422-30
Oct 06, 2026452+58
Oct 05, 2026394+172
Oct 02, 2026222No prior observation