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Contract OI history

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Dec 18, 2026 EXPIRATION

BLCO $17.00 Call

BLCO261218C00017000

Latest saved OI154Oct 23, 2026
Last change+33vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLCO $17.00 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. 154770 2026-10-02: 121 OI2026-10-05: 121 OI2026-10-06: 121 OI2026-10-07: 121 OI2026-10-08: 121 OI2026-10-09: 121 OI2026-10-13: 121 OI2026-10-14: 121 OI2026-10-16: 121 OI2026-10-20: 121 OI2026-10-23: 154 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, 2026Viewing154+33
Oct 20, 20261210
Oct 16, 20261210
Oct 14, 20261210
Oct 13, 20261210
Oct 09, 20261210
Oct 08, 20261210
Oct 07, 20261210
Oct 06, 20261210
Oct 05, 20261210
Oct 02, 2026121No prior observation