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Contract OI history

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Dec 18, 2026 EXPIRATION

COHR $290.00 Put

COHR261218P00290000

Latest saved OI379Oct 23, 2026
Last change+7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $290.00 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. 3791890 2026-10-02: 323 OI2026-10-05: 316 OI2026-10-06: 327 OI2026-10-07: 336 OI2026-10-08: 336 OI2026-10-09: 343 OI2026-10-13: 345 OI2026-10-14: 345 OI2026-10-15: 349 OI2026-10-16: 363 OI2026-10-21: 372 OI2026-10-23: 379 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, 2026Viewing379+7
Oct 21, 2026372+9
Oct 16, 2026363+14
Oct 15, 2026349+4
Oct 14, 20263450
Oct 13, 2026345+2
Oct 09, 2026343+7
Oct 08, 20263360
Oct 07, 2026336+9
Oct 06, 2026327+11
Oct 05, 2026316-7
Oct 02, 2026323No prior observation