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Contract OI history

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Dec 18, 2026 EXPIRATION

GM $87.50 Put

GM261218P00087500

Latest saved OI585Oct 23, 2026
Last change-15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GM $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. 6103050 2026-10-02: 610 OI2026-10-05: 610 OI2026-10-06: 595 OI2026-10-07: 595 OI2026-10-08: 595 OI2026-10-09: 595 OI2026-10-13: 597 OI2026-10-14: 597 OI2026-10-15: 597 OI2026-10-16: 597 OI2026-10-21: 600 OI2026-10-23: 585 OI Oct 02, 2026Oct 23, 2026

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

GM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing585-15
Oct 21, 2026600+3
Oct 16, 20265970
Oct 15, 20265970
Oct 14, 20265970
Oct 13, 2026597+2
Oct 09, 20265950
Oct 08, 20265950
Oct 07, 20265950
Oct 06, 2026595-15
Oct 05, 20266100
Oct 02, 2026610No prior observation