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Contract OI history

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Jan 21, 2028 EXPIRATION

BKKT $40.00 Put

BKKT280121P00040000

Latest saved OI41Oct 20, 2026
Last change-93vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BKKT $40.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 134670 2026-10-02: 34 OI2026-10-05: 34 OI2026-10-06: 34 OI2026-10-07: 34 OI2026-10-08: 24 OI2026-10-09: 24 OI2026-10-13: 50 OI2026-10-14: 60 OI2026-10-16: 134 OI2026-10-20: 41 OI Oct 02, 2026Oct 20, 2026

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

BKKT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing41-93
Oct 16, 2026134+74
Oct 14, 202660+10
Oct 13, 202650+26
Oct 09, 2026240
Oct 08, 202624-10
Oct 07, 2026340
Oct 06, 2026340
Oct 05, 2026340
Oct 02, 202634No prior observation