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Contract OI history

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Mar 19, 2027 EXPIRATION

SO $87.50 Put

SO270319P00087500

Latest saved OI911Oct 23, 2026
Last change+46vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SO $87.50 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. 9114550 2026-10-02: 799 OI2026-10-05: 799 OI2026-10-06: 799 OI2026-10-07: 799 OI2026-10-08: 799 OI2026-10-09: 799 OI2026-10-13: 846 OI2026-10-14: 846 OI2026-10-15: 856 OI2026-10-16: 856 OI2026-10-21: 865 OI2026-10-23: 911 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, 2026Viewing911+46
Oct 21, 2026865+9
Oct 16, 20268560
Oct 15, 2026856+10
Oct 14, 20268460
Oct 13, 2026846+47
Oct 09, 20267990
Oct 08, 20267990
Oct 07, 20267990
Oct 06, 20267990
Oct 05, 20267990
Oct 02, 2026799No prior observation