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Contract OI history

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Nov 20, 2026 EXPIRATION

COLB $25.00 Put

COLB261120P00025000

Latest saved OI335Oct 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 $25.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3351670 2026-10-09: 283 OI2026-10-13: 284 OI2026-10-14: 331 OI2026-10-15: 331 OI2026-10-16: 331 OI2026-10-21: 335 OI2026-10-23: 335 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, 2026Viewing3350
Oct 21, 2026335+4
Oct 16, 20263310
Oct 15, 20263310
Oct 14, 2026331+47
Oct 13, 2026284+1
Oct 09, 2026283No prior observation