OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BLSH $30.00 Put

BLSH270115P00030000

Latest saved OI809Oct 23, 2026
Last change0vs 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. 8094040 2026-10-02: 773 OI2026-10-05: 773 OI2026-10-06: 773 OI2026-10-07: 773 OI2026-10-08: 773 OI2026-10-09: 778 OI2026-10-13: 786 OI2026-10-14: 786 OI2026-10-16: 807 OI2026-10-20: 809 OI2026-10-23: 809 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, 2026Viewing8090
Oct 20, 2026809+2
Oct 16, 2026807+21
Oct 14, 20267860
Oct 13, 2026786+8
Oct 09, 2026778+5
Oct 08, 20267730
Oct 07, 20267730
Oct 06, 20267730
Oct 05, 20267730
Oct 02, 2026773No prior observation