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Contract OI history

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Jan 15, 2027 EXPIRATION

COHR $320.00 Put

COHR270115P00320000

Latest saved OI415Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $320.00 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. 4472230 2026-10-02: 440 OI2026-10-05: 439 OI2026-10-06: 435 OI2026-10-07: 436 OI2026-10-08: 436 OI2026-10-09: 437 OI2026-10-13: 447 OI2026-10-14: 447 OI2026-10-15: 436 OI2026-10-16: 437 OI2026-10-21: 414 OI2026-10-23: 415 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, 2026Viewing415+1
Oct 21, 2026414-23
Oct 16, 2026437+1
Oct 15, 2026436-11
Oct 14, 20264470
Oct 13, 2026447+10
Oct 09, 2026437+1
Oct 08, 20264360
Oct 07, 2026436+1
Oct 06, 2026435-4
Oct 05, 2026439-1
Oct 02, 2026440No prior observation