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Contract OI history

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Dec 18, 2026 EXPIRATION

COO $40.00 Put

COO261218P00040000

Latest saved OI92Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COO $40.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 92460 2026-10-09: 92 OI2026-10-13: 92 OI2026-10-14: 92 OI2026-10-15: 92 OI2026-10-16: 92 OI2026-10-21: 92 OI2026-10-23: 92 OI Oct 09, 2026Oct 23, 2026

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

COO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing920
Oct 21, 2026920
Oct 16, 2026920
Oct 15, 2026920
Oct 14, 2026920
Oct 13, 2026920
Oct 09, 202692No prior observation