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Contract OI history

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Nov 20, 2026 EXPIRATION

COLB $30.00 Call

COLB261120C00030000

Latest saved OI618Oct 23, 2026
Last change-53vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COLB $30.00 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. 6713350 2026-10-09: 573 OI2026-10-13: 574 OI2026-10-14: 643 OI2026-10-15: 638 OI2026-10-16: 638 OI2026-10-21: 671 OI2026-10-23: 618 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, 2026Viewing618-53
Oct 21, 2026671+33
Oct 16, 20266380
Oct 15, 2026638-5
Oct 14, 2026643+69
Oct 13, 2026574+1
Oct 09, 2026573No prior observation