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Contract OI history

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Dec 18, 2026 EXPIRATION

BLCO $10.00 Call

BLCO261218C00010000

Latest saved OI131Oct 23, 2026
Last change-22vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLCO $10.00 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. 2711350 2026-10-02: 271 OI2026-10-05: 271 OI2026-10-06: 271 OI2026-10-07: 271 OI2026-10-08: 263 OI2026-10-09: 250 OI2026-10-13: 196 OI2026-10-14: 184 OI2026-10-16: 151 OI2026-10-20: 153 OI2026-10-23: 131 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, 2026Viewing131-22
Oct 20, 2026153+2
Oct 16, 2026151-33
Oct 14, 2026184-12
Oct 13, 2026196-54
Oct 09, 2026250-13
Oct 08, 2026263-8
Oct 07, 20262710
Oct 06, 20262710
Oct 05, 20262710
Oct 02, 2026271No prior observation