OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jun 17, 2027 EXPIRATION

BRK.B $430.00 Put

BRKB270617P00430000

Latest saved OI603Oct 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 $430.00 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. 6033010 2026-10-02: 599 OI2026-10-05: 599 OI2026-10-06: 599 OI2026-10-07: 599 OI2026-10-08: 599 OI2026-10-09: 599 OI2026-10-13: 601 OI2026-10-14: 601 OI2026-10-15: 602 OI2026-10-16: 602 OI2026-10-21: 600 OI2026-10-23: 603 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, 2026Viewing603+3
Oct 21, 2026600-2
Oct 16, 20266020
Oct 15, 2026602+1
Oct 14, 20266010
Oct 13, 2026601+2
Oct 09, 20265990
Oct 08, 20265990
Oct 07, 20265990
Oct 06, 20265990
Oct 05, 20265990
Oct 02, 2026599No prior observation