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Contract OI history

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Jan 21, 2028 EXPIRATION

COHR $400.00 Call

COHR280121C00400000

Latest saved OI253Oct 23, 2026
Last change+21vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COHR $400.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2531260 2026-10-02: 228 OI2026-10-05: 228 OI2026-10-06: 227 OI2026-10-07: 227 OI2026-10-08: 227 OI2026-10-09: 227 OI2026-10-13: 228 OI2026-10-14: 228 OI2026-10-15: 231 OI2026-10-16: 231 OI2026-10-21: 232 OI2026-10-23: 253 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, 2026Viewing253+21
Oct 21, 2026232+1
Oct 16, 20262310
Oct 15, 2026231+3
Oct 14, 20262280
Oct 13, 2026228+1
Oct 09, 20262270
Oct 08, 20262270
Oct 07, 20262270
Oct 06, 2026227-1
Oct 05, 20262280
Oct 02, 2026228No prior observation