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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $510.00 Put

BRKB261218P00510000

Latest saved OI765Oct 23, 2026
Last change+31vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $510.00 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. 7653820 2026-10-02: 629 OI2026-10-05: 635 OI2026-10-06: 660 OI2026-10-07: 681 OI2026-10-08: 681 OI2026-10-09: 692 OI2026-10-13: 693 OI2026-10-14: 693 OI2026-10-15: 647 OI2026-10-16: 687 OI2026-10-21: 734 OI2026-10-23: 765 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, 2026Viewing765+31
Oct 21, 2026734+47
Oct 16, 2026687+40
Oct 15, 2026647-46
Oct 14, 20266930
Oct 13, 2026693+1
Oct 09, 2026692+11
Oct 08, 20266810
Oct 07, 2026681+21
Oct 06, 2026660+25
Oct 05, 2026635+6
Oct 02, 2026629No prior observation