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Contract OI history

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Feb 19, 2027 EXPIRATION

COLB $30.00 Call

COLB270219C00030000

Latest saved OI273Oct 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 $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. 2731360 2026-10-09: 227 OI2026-10-13: 257 OI2026-10-14: 257 OI2026-10-15: 267 OI2026-10-16: 273 OI2026-10-21: 273 OI2026-10-23: 273 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, 2026Viewing2730
Oct 21, 20262730
Oct 16, 2026273+6
Oct 15, 2026267+10
Oct 14, 20262570
Oct 13, 2026257+30
Oct 09, 2026227No prior observation