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Contract OI history

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Oct 23, 2026 EXPIRATION

B $37.50 Put

B261023P00037500

Latest saved OI113Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $37.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 114570 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 0 OI2026-10-08: 39 OI2026-10-09: 40 OI2026-10-13: 43 OI2026-10-14: 48 OI2026-10-15: 69 OI2026-10-16: 70 OI2026-10-21: 114 OI2026-10-23: 113 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing113-1
Oct 21, 2026114+44
Oct 16, 202670+1
Oct 15, 202669+21
Oct 14, 202648+5
Oct 13, 202643+3
Oct 09, 202640+1
Oct 08, 202639+39
Oct 07, 202600
Oct 06, 202600
Oct 05, 202600
Oct 02, 20260No prior observation