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Contract OI history

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Jan 21, 2028 EXPIRATION

BLSH $22.50 Put

BLSH280121P00022500

Latest saved OI231Oct 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 $22.50 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. 2321160 2026-10-02: 44 OI2026-10-05: 44 OI2026-10-06: 44 OI2026-10-07: 44 OI2026-10-08: 232 OI2026-10-09: 232 OI2026-10-13: 231 OI2026-10-14: 231 OI2026-10-16: 231 OI2026-10-20: 231 OI2026-10-23: 231 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, 2026Viewing2310
Oct 20, 20262310
Oct 16, 20262310
Oct 14, 20262310
Oct 13, 2026231-1
Oct 09, 20262320
Oct 08, 2026232+188
Oct 07, 2026440
Oct 06, 2026440
Oct 05, 2026440
Oct 02, 202644No prior observation