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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $435.00 Put

BRKB261218P00435000

Latest saved OI455Oct 23, 2026
Last change-3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $435.00 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. 4692340 2026-10-02: 452 OI2026-10-05: 452 OI2026-10-06: 461 OI2026-10-07: 469 OI2026-10-08: 469 OI2026-10-09: 469 OI2026-10-13: 469 OI2026-10-14: 469 OI2026-10-15: 469 OI2026-10-16: 469 OI2026-10-21: 458 OI2026-10-23: 455 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, 2026Viewing455-3
Oct 21, 2026458-11
Oct 16, 20264690
Oct 15, 20264690
Oct 14, 20264690
Oct 13, 20264690
Oct 09, 20264690
Oct 08, 20264690
Oct 07, 2026469+8
Oct 06, 2026461+9
Oct 05, 20264520
Oct 02, 2026452No prior observation