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Contract OI history

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Oct 30, 2026 EXPIRATION

B $40.00 Call

B261030C00040000

Latest saved OI307Oct 23, 2026
Last change-3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $40.00 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. 3101550 2026-10-02: 109 OI2026-10-05: 146 OI2026-10-06: 146 OI2026-10-07: 179 OI2026-10-08: 253 OI2026-10-09: 256 OI2026-10-13: 262 OI2026-10-14: 272 OI2026-10-15: 299 OI2026-10-16: 305 OI2026-10-21: 310 OI2026-10-23: 307 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, 2026Viewing307-3
Oct 21, 2026310+5
Oct 16, 2026305+6
Oct 15, 2026299+27
Oct 14, 2026272+10
Oct 13, 2026262+6
Oct 09, 2026256+3
Oct 08, 2026253+74
Oct 07, 2026179+33
Oct 06, 20261460
Oct 05, 2026146+37
Oct 02, 2026109No prior observation