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Contract OI history

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Mar 19, 2027 EXPIRATION

B $37.00 Call

B270319C00037000

Latest saved OI131Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $37.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 131650 2026-10-02: 119 OI2026-10-05: 119 OI2026-10-06: 119 OI2026-10-07: 119 OI2026-10-08: 129 OI2026-10-09: 129 OI2026-10-13: 129 OI2026-10-14: 129 OI2026-10-15: 131 OI2026-10-16: 131 OI2026-10-21: 131 OI2026-10-23: 131 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, 2026Viewing1310
Oct 21, 20261310
Oct 16, 20261310
Oct 15, 2026131+2
Oct 14, 20261290
Oct 13, 20261290
Oct 09, 20261290
Oct 08, 2026129+10
Oct 07, 20261190
Oct 06, 20261190
Oct 05, 20261190
Oct 02, 2026119No prior observation