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Contract OI history

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May 21, 2027 EXPIRATION

COHR $230.00 Put

COHR270521P00230000

Latest saved OI598Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $230.00 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. 5982990 2026-10-02: 204 OI2026-10-05: 205 OI2026-10-06: 205 OI2026-10-07: 205 OI2026-10-08: 205 OI2026-10-09: 580 OI2026-10-13: 580 OI2026-10-14: 580 OI2026-10-15: 595 OI2026-10-16: 596 OI2026-10-21: 598 OI2026-10-23: 598 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, 2026Viewing5980
Oct 21, 2026598+2
Oct 16, 2026596+1
Oct 15, 2026595+15
Oct 14, 20265800
Oct 13, 20265800
Oct 09, 2026580+375
Oct 08, 20262050
Oct 07, 20262050
Oct 06, 20262050
Oct 05, 2026205+1
Oct 02, 2026204No prior observation