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Contract OI history

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Jan 21, 2028 EXPIRATION

SO $82.50 Put

SO280121P00082500

Latest saved OI256Oct 23, 2026
Last change0vs 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. 2561280 2026-10-02: 178 OI2026-10-05: 202 OI2026-10-06: 202 OI2026-10-07: 238 OI2026-10-08: 238 OI2026-10-09: 256 OI2026-10-13: 256 OI2026-10-14: 256 OI2026-10-15: 256 OI2026-10-16: 256 OI2026-10-21: 256 OI2026-10-23: 256 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, 20262560
Oct 21, 2026Viewing2560
Oct 16, 20262560
Oct 15, 20262560
Oct 14, 20262560
Oct 13, 20262560
Oct 09, 2026256+18
Oct 08, 20262380
Oct 07, 2026238+36
Oct 06, 20262020
Oct 05, 2026202+24
Oct 02, 2026178No prior observation