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Contract OI history

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Dec 18, 2026 EXPIRATION

BLCO $25.00 Call

BLCO261218C00025000

Latest saved OI125Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLCO $25.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2001000 2026-10-02: 200 OI2026-10-05: 200 OI2026-10-06: 200 OI2026-10-07: 200 OI2026-10-08: 200 OI2026-10-09: 200 OI2026-10-13: 200 OI2026-10-14: 200 OI2026-10-16: 125 OI2026-10-20: 125 OI2026-10-23: 125 OI Oct 02, 2026Oct 23, 2026

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

BLCO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1250
Oct 20, 20261250
Oct 16, 2026125-75
Oct 14, 20262000
Oct 13, 20262000
Oct 09, 20262000
Oct 08, 20262000
Oct 07, 20262000
Oct 06, 20262000
Oct 05, 20262000
Oct 02, 2026200No prior observation