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Contract OI history

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Nov 20, 2026 EXPIRATION

BLCO $20.00 Call

BLCO261120C00020000

Latest saved OI992Oct 23, 2026
Last change+108vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLCO $20.00 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. 9924960 2026-10-02: 104 OI2026-10-05: 107 OI2026-10-06: 107 OI2026-10-07: 107 OI2026-10-08: 108 OI2026-10-09: 108 OI2026-10-13: 107 OI2026-10-14: 107 OI2026-10-16: 107 OI2026-10-20: 884 OI2026-10-23: 992 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, 2026Viewing992+108
Oct 20, 2026884+777
Oct 16, 20261070
Oct 14, 20261070
Oct 13, 2026107-1
Oct 09, 20261080
Oct 08, 2026108+1
Oct 07, 20261070
Oct 06, 20261070
Oct 05, 2026107+3
Oct 02, 2026104No prior observation