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Contract OI history

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Oct 30, 2026 EXPIRATION

COF $212.50 Put

COF261030P00212500

Latest saved OI23Oct 23, 2026
Last change+21vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $212.50 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. 23110 2026-10-09: 0 OI2026-10-13: 2 OI2026-10-14: 2 OI2026-10-15: 2 OI2026-10-16: 2 OI2026-10-21: 2 OI2026-10-23: 23 OI Oct 09, 2026Oct 23, 2026

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

COF contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing23+21
Oct 21, 202620
Oct 16, 202620
Oct 15, 202620
Oct 14, 202620
Oct 13, 20262+2
Oct 09, 20260No prior observation