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Contract OI history

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Nov 20, 2026 EXPIRATION

BLCO $17.00 Call

BLCO261120C00017000

Latest saved OI642Oct 23, 2026
Last change+36vs 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. 6423210 2026-10-02: 540 OI2026-10-05: 540 OI2026-10-06: 540 OI2026-10-07: 539 OI2026-10-08: 539 OI2026-10-09: 539 OI2026-10-13: 540 OI2026-10-14: 540 OI2026-10-16: 551 OI2026-10-20: 606 OI2026-10-23: 642 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, 2026Viewing642+36
Oct 20, 2026606+55
Oct 16, 2026551+11
Oct 14, 20265400
Oct 13, 2026540+1
Oct 09, 20265390
Oct 08, 20265390
Oct 07, 2026539-1
Oct 06, 20265400
Oct 05, 20265400
Oct 02, 2026540No prior observation