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Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $475.00 Put

BRKB270319P00475000

Latest saved OI978Oct 23, 2026
Last change+4vs 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. 9784890 2026-10-02: 900 OI2026-10-05: 924 OI2026-10-06: 950 OI2026-10-07: 953 OI2026-10-08: 953 OI2026-10-09: 959 OI2026-10-13: 972 OI2026-10-14: 972 OI2026-10-15: 973 OI2026-10-16: 972 OI2026-10-21: 974 OI2026-10-23: 978 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, 2026Viewing978+4
Oct 21, 2026974+2
Oct 16, 2026972-1
Oct 15, 2026973+1
Oct 14, 20269720
Oct 13, 2026972+13
Oct 09, 2026959+6
Oct 08, 20269530
Oct 07, 2026953+3
Oct 06, 2026950+26
Oct 05, 2026924+24
Oct 02, 2026900No prior observation