OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

BLSH $29.50 Put

BLSH261120P00029500

Latest saved OI5Oct 23, 2026
Last change+4vs previous saved observation
Saved market days2Oct 20, 2026 onwards
Daily open interest Hover a point for its date and OI
BLSH $29.50 put open interest history 2 saved observations from 2026-10-20 to 2026-10-23. Exact values and changes are listed in the table below. 520 2026-10-20: 1 OI2026-10-23: 5 OI Oct 20, 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, 2026Viewing5+4
Oct 20, 20261No prior observation