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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $300.00 Call

BRKB261218C00300000

Latest saved OI304Oct 23, 2026
Last change-61vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $300.00 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. 3761880 2026-10-02: 376 OI2026-10-05: 376 OI2026-10-06: 375 OI2026-10-07: 375 OI2026-10-08: 375 OI2026-10-09: 375 OI2026-10-13: 375 OI2026-10-14: 375 OI2026-10-15: 363 OI2026-10-16: 363 OI2026-10-21: 365 OI2026-10-23: 304 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, 2026Viewing304-61
Oct 21, 2026365+2
Oct 16, 20263630
Oct 15, 2026363-12
Oct 14, 20263750
Oct 13, 20263750
Oct 09, 20263750
Oct 08, 20263750
Oct 07, 20263750
Oct 06, 2026375-1
Oct 05, 20263760
Oct 02, 2026376No prior observation