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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $485.00 Put

BRKB261218P00485000

Latest saved OI976Oct 23, 2026
Last change-22vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $485.00 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. 9994990 2026-10-02: 844 OI2026-10-05: 853 OI2026-10-06: 852 OI2026-10-07: 843 OI2026-10-08: 843 OI2026-10-09: 838 OI2026-10-13: 857 OI2026-10-14: 857 OI2026-10-15: 860 OI2026-10-16: 999 OI2026-10-21: 998 OI2026-10-23: 976 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, 2026Viewing976-22
Oct 21, 2026998-1
Oct 16, 2026999+139
Oct 15, 2026860+3
Oct 14, 20268570
Oct 13, 2026857+19
Oct 09, 2026838-5
Oct 08, 20268430
Oct 07, 2026843-9
Oct 06, 2026852-1
Oct 05, 2026853+9
Oct 02, 2026844No prior observation