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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $475.00 Put

BRKB261218P00475000

Latest saved OI908Oct 23, 2026
Last change+10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $475.00 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. 9364680 2026-10-02: 756 OI2026-10-05: 857 OI2026-10-06: 857 OI2026-10-07: 865 OI2026-10-08: 865 OI2026-10-09: 867 OI2026-10-13: 873 OI2026-10-14: 873 OI2026-10-15: 879 OI2026-10-16: 936 OI2026-10-21: 898 OI2026-10-23: 908 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, 2026Viewing908+10
Oct 21, 2026898-38
Oct 16, 2026936+57
Oct 15, 2026879+6
Oct 14, 20268730
Oct 13, 2026873+6
Oct 09, 2026867+2
Oct 08, 20268650
Oct 07, 2026865+8
Oct 06, 20268570
Oct 05, 2026857+101
Oct 02, 2026756No prior observation