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Contract OI history

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Dec 18, 2026 EXPIRATION

BLSH $40.00 Call

BLSH261218C00040000

Latest saved OI679Oct 23, 2026
Last change+10vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLSH $40.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6793390 2026-10-02: 651 OI2026-10-05: 651 OI2026-10-06: 656 OI2026-10-07: 661 OI2026-10-08: 661 OI2026-10-09: 656 OI2026-10-13: 658 OI2026-10-14: 652 OI2026-10-16: 671 OI2026-10-20: 669 OI2026-10-23: 679 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, 2026Viewing679+10
Oct 20, 2026669-2
Oct 16, 2026671+19
Oct 14, 2026652-6
Oct 13, 2026658+2
Oct 09, 2026656-5
Oct 08, 20266610
Oct 07, 2026661+5
Oct 06, 2026656+5
Oct 05, 20266510
Oct 02, 2026651No prior observation