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Contract OI history

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Dec 18, 2026 EXPIRATION

COHR $280.00 Put

COHR261218P00280000

Latest saved OI344Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $280.00 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. 3441720 2026-10-02: 114 OI2026-10-05: 281 OI2026-10-06: 296 OI2026-10-07: 305 OI2026-10-08: 305 OI2026-10-09: 324 OI2026-10-13: 334 OI2026-10-14: 334 OI2026-10-15: 337 OI2026-10-16: 341 OI2026-10-21: 341 OI2026-10-23: 344 OI Oct 02, 2026Oct 23, 2026

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

COHR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing344+3
Oct 21, 20263410
Oct 16, 2026341+4
Oct 15, 2026337+3
Oct 14, 20263340
Oct 13, 2026334+10
Oct 09, 2026324+19
Oct 08, 20263050
Oct 07, 2026305+9
Oct 06, 2026296+15
Oct 05, 2026281+167
Oct 02, 2026114No prior observation