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Contract OI history

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Nov 20, 2026 EXPIRATION

COO $55.00 Put

COO261120P00055000

Latest saved OI144Oct 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 $55.00 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. 148740 2026-10-09: 145 OI2026-10-13: 145 OI2026-10-14: 146 OI2026-10-15: 148 OI2026-10-16: 146 OI2026-10-21: 144 OI2026-10-23: 144 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, 2026Viewing1440
Oct 21, 2026144-2
Oct 16, 2026146-2
Oct 15, 2026148+2
Oct 14, 2026146+1
Oct 13, 20261450
Oct 09, 2026145No prior observation