OITracker Cboe delayed data

Contract OI history

Back to BLSH

Jan 21, 2028 EXPIRATION

BLSH $20.00 Put

BLSH280121P00020000

Latest saved OI139Oct 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 $20.00 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. 139690 2026-10-02: 139 OI2026-10-05: 139 OI2026-10-06: 139 OI2026-10-07: 139 OI2026-10-08: 139 OI2026-10-09: 139 OI2026-10-13: 139 OI2026-10-14: 139 OI2026-10-16: 139 OI2026-10-20: 139 OI2026-10-23: 139 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, 2026Viewing1390
Oct 20, 20261390
Oct 16, 20261390
Oct 14, 20261390
Oct 13, 20261390
Oct 09, 20261390
Oct 08, 20261390
Oct 07, 20261390
Oct 06, 20261390
Oct 05, 20261390
Oct 02, 2026139No prior observation