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Contract OI history

Back to BRK.B

Nov 20, 2026 EXPIRATION

BRK.B $475.00 Put

BRKB261120P00475000

Latest saved OI286Oct 23, 2026
Last change-9vs 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. 3041520 2026-10-02: 217 OI2026-10-05: 234 OI2026-10-06: 270 OI2026-10-07: 280 OI2026-10-08: 280 OI2026-10-09: 285 OI2026-10-13: 281 OI2026-10-14: 281 OI2026-10-15: 292 OI2026-10-16: 304 OI2026-10-21: 295 OI2026-10-23: 286 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, 2026Viewing286-9
Oct 21, 2026295-9
Oct 16, 2026304+12
Oct 15, 2026292+11
Oct 14, 20262810
Oct 13, 2026281-4
Oct 09, 2026285+5
Oct 08, 20262800
Oct 07, 2026280+10
Oct 06, 2026270+36
Oct 05, 2026234+17
Oct 02, 2026217No prior observation