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Contract OI history

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Feb 19, 2027 EXPIRATION

COLB $35.00 Call

COLB270219C00035000

Latest saved OI733Oct 23, 2026
Last change0vs 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. 7333660 2026-10-09: 730 OI2026-10-13: 733 OI2026-10-14: 733 OI2026-10-15: 733 OI2026-10-16: 733 OI2026-10-21: 733 OI2026-10-23: 733 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, 2026Viewing7330
Oct 21, 20267330
Oct 16, 20267330
Oct 15, 20267330
Oct 14, 20267330
Oct 13, 2026733+3
Oct 09, 2026730No prior observation