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Contract OI history

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Nov 20, 2026 EXPIRATION

COLB $35.00 Call

COLB261120C00035000

Latest saved OI1,624Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COLB $35.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,6628310 2026-10-09: 1,662 OI2026-10-13: 1,626 OI2026-10-14: 1,626 OI2026-10-15: 1,626 OI2026-10-16: 1,626 OI2026-10-21: 1,626 OI2026-10-23: 1,624 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

COLB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,624-2
Oct 21, 20261,6260
Oct 16, 20261,6260
Oct 15, 20261,6260
Oct 14, 20261,6260
Oct 13, 20261,626-36
Oct 09, 20261,662No prior observation