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Contract OI history

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Dec 18, 2026 EXPIRATION

COHR $270.00 Put

COHR261218P00270000

Latest saved OI345Oct 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 $270.00 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. 3511750 2026-10-02: 265 OI2026-10-05: 266 OI2026-10-06: 276 OI2026-10-07: 287 OI2026-10-08: 287 OI2026-10-09: 317 OI2026-10-13: 315 OI2026-10-14: 315 OI2026-10-15: 342 OI2026-10-16: 345 OI2026-10-21: 351 OI2026-10-23: 345 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, 2026Viewing345-6
Oct 21, 2026351+6
Oct 16, 2026345+3
Oct 15, 2026342+27
Oct 14, 20263150
Oct 13, 2026315-2
Oct 09, 2026317+30
Oct 08, 20262870
Oct 07, 2026287+11
Oct 06, 2026276+10
Oct 05, 2026266+1
Oct 02, 2026265No prior observation