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Contract OI history

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Dec 18, 2026 EXPIRATION

COHR $220.00 Put

COHR261218P00220000

Latest saved OI1,347Oct 23, 2026
Last change-19vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $220.00 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. 1,3666830 2026-10-02: 147 OI2026-10-05: 148 OI2026-10-06: 156 OI2026-10-07: 172 OI2026-10-08: 172 OI2026-10-09: 224 OI2026-10-13: 1,012 OI2026-10-14: 1,012 OI2026-10-15: 1,046 OI2026-10-16: 1,074 OI2026-10-21: 1,366 OI2026-10-23: 1,347 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, 2026Viewing1,347-19
Oct 21, 20261,366+292
Oct 16, 20261,074+28
Oct 15, 20261,046+34
Oct 14, 20261,0120
Oct 13, 20261,012+788
Oct 09, 2026224+52
Oct 08, 20261720
Oct 07, 2026172+16
Oct 06, 2026156+8
Oct 05, 2026148+1
Oct 02, 2026147No prior observation