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Contract OI history

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Mar 19, 2027 EXPIRATION

COHR $320.00 Put

COHR270319P00320000

Latest saved OI160Oct 23, 2026
Last change+2vs 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. 160800 2026-10-02: 111 OI2026-10-05: 111 OI2026-10-06: 115 OI2026-10-07: 112 OI2026-10-08: 112 OI2026-10-09: 112 OI2026-10-13: 136 OI2026-10-14: 136 OI2026-10-15: 137 OI2026-10-16: 156 OI2026-10-21: 158 OI2026-10-23: 160 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, 2026Viewing160+2
Oct 21, 2026158+2
Oct 16, 2026156+19
Oct 15, 2026137+1
Oct 14, 20261360
Oct 13, 2026136+24
Oct 09, 20261120
Oct 08, 20261120
Oct 07, 2026112-3
Oct 06, 2026115+4
Oct 05, 20261110
Oct 02, 2026111No prior observation