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Contract OI history

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Jan 21, 2028 EXPIRATION

COHR $200.00 Put

COHR280121P00200000

Latest saved OI381Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $200.00 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. 3811900 2026-10-02: 346 OI2026-10-05: 356 OI2026-10-06: 360 OI2026-10-07: 358 OI2026-10-08: 358 OI2026-10-09: 362 OI2026-10-13: 363 OI2026-10-14: 363 OI2026-10-15: 366 OI2026-10-16: 369 OI2026-10-21: 378 OI2026-10-23: 381 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, 2026Viewing381+3
Oct 21, 2026378+9
Oct 16, 2026369+3
Oct 15, 2026366+3
Oct 14, 20263630
Oct 13, 2026363+1
Oct 09, 2026362+4
Oct 08, 20263580
Oct 07, 2026358-2
Oct 06, 2026360+4
Oct 05, 2026356+10
Oct 02, 2026346No prior observation