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Contract OI history

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Nov 20, 2026 EXPIRATION

SO $77.50 Put

SO261120P00077500

Latest saved OI346Oct 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 $77.50 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. 3661830 2026-10-02: 211 OI2026-10-05: 225 OI2026-10-06: 239 OI2026-10-07: 237 OI2026-10-08: 232 OI2026-10-09: 247 OI2026-10-13: 364 OI2026-10-14: 364 OI2026-10-15: 364 OI2026-10-16: 364 OI2026-10-21: 366 OI2026-10-23: 346 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, 2026346-20
Oct 21, 2026Viewing366+2
Oct 16, 20263640
Oct 15, 20263640
Oct 14, 20263640
Oct 13, 2026364+117
Oct 09, 2026247+15
Oct 08, 2026232-5
Oct 07, 2026237-2
Oct 06, 2026239+14
Oct 05, 2026225+14
Oct 02, 2026211No prior observation