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Contract OI history

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Jan 21, 2028 EXPIRATION

COF $200.00 Put

COF280121P00200000

Latest saved OI434Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $200.00 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. 4342170 2026-10-02: 248 OI2026-10-05: 248 OI2026-10-06: 248 OI2026-10-07: 248 OI2026-10-08: 248 OI2026-10-09: 284 OI2026-10-13: 285 OI2026-10-14: 285 OI2026-10-15: 290 OI2026-10-16: 290 OI2026-10-21: 434 OI2026-10-23: 434 OI Oct 02, 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, 2026Viewing4340
Oct 21, 2026434+144
Oct 16, 20262900
Oct 15, 2026290+5
Oct 14, 20262850
Oct 13, 2026285+1
Oct 09, 2026284+36
Oct 08, 20262480
Oct 07, 20262480
Oct 06, 20262480
Oct 05, 20262480
Oct 02, 2026248No prior observation