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Contract OI history

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May 21, 2027 EXPIRATION

COHR $240.00 Put

COHR270521P00240000

Latest saved OI289Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $240.00 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. 2891440 2026-10-02: 172 OI2026-10-05: 204 OI2026-10-06: 206 OI2026-10-07: 206 OI2026-10-08: 206 OI2026-10-09: 247 OI2026-10-13: 286 OI2026-10-14: 286 OI2026-10-15: 286 OI2026-10-16: 287 OI2026-10-21: 285 OI2026-10-23: 289 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, 2026Viewing289+4
Oct 21, 2026285-2
Oct 16, 2026287+1
Oct 15, 20262860
Oct 14, 20262860
Oct 13, 2026286+39
Oct 09, 2026247+41
Oct 08, 20262060
Oct 07, 20262060
Oct 06, 2026206+2
Oct 05, 2026204+32
Oct 02, 2026172No prior observation