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Contract OI history

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Jan 15, 2027 EXPIRATION

COHR $400.00 Put

COHR270115P00400000

Latest saved OI418Oct 23, 2026
Last change-6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $400.00 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. 4482240 2026-10-02: 441 OI2026-10-05: 441 OI2026-10-06: 441 OI2026-10-07: 441 OI2026-10-08: 441 OI2026-10-09: 442 OI2026-10-13: 443 OI2026-10-14: 443 OI2026-10-15: 443 OI2026-10-16: 448 OI2026-10-21: 424 OI2026-10-23: 418 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, 2026Viewing418-6
Oct 21, 2026424-24
Oct 16, 2026448+5
Oct 15, 20264430
Oct 14, 20264430
Oct 13, 2026443+1
Oct 09, 2026442+1
Oct 08, 20264410
Oct 07, 20264410
Oct 06, 20264410
Oct 05, 20264410
Oct 02, 2026441No prior observation