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Contract OI history

Back to BRK.B

Sep 17, 2027 EXPIRATION

BRK.B $640.00 Call

BRKB270917C00640000

Latest saved OI101Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $640.00 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. 101500 2026-10-02: 83 OI2026-10-05: 83 OI2026-10-06: 83 OI2026-10-07: 83 OI2026-10-08: 83 OI2026-10-09: 84 OI2026-10-13: 85 OI2026-10-14: 85 OI2026-10-15: 86 OI2026-10-16: 86 OI2026-10-21: 92 OI2026-10-23: 101 OI Oct 02, 2026Oct 23, 2026

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

BRK.B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing101+9
Oct 21, 202692+6
Oct 16, 2026860
Oct 15, 202686+1
Oct 14, 2026850
Oct 13, 202685+1
Oct 09, 202684+1
Oct 08, 2026830
Oct 07, 2026830
Oct 06, 2026830
Oct 05, 2026830
Oct 02, 202683No prior observation