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Contract OI history

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Dec 18, 2026 EXPIRATION

BLSH $30.00 Put

BLSH261218P00030000

Latest saved OI284Oct 23, 2026
Last change-30vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLSH $30.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3211600 2026-10-02: 310 OI2026-10-05: 311 OI2026-10-06: 311 OI2026-10-07: 311 OI2026-10-08: 321 OI2026-10-09: 321 OI2026-10-13: 311 OI2026-10-14: 311 OI2026-10-16: 312 OI2026-10-20: 314 OI2026-10-23: 284 OI Oct 02, 2026Oct 23, 2026

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

BLSH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing284-30
Oct 20, 2026314+2
Oct 16, 2026312+1
Oct 14, 20263110
Oct 13, 2026311-10
Oct 09, 20263210
Oct 08, 2026321+10
Oct 07, 20263110
Oct 06, 20263110
Oct 05, 2026311+1
Oct 02, 2026310No prior observation