OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $430.00 Put

BRKB270319P00430000

Latest saved OI839Oct 23, 2026
Last change-1vs 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. 8664330 2026-10-02: 828 OI2026-10-05: 829 OI2026-10-06: 866 OI2026-10-07: 866 OI2026-10-08: 866 OI2026-10-09: 841 OI2026-10-13: 842 OI2026-10-14: 842 OI2026-10-15: 841 OI2026-10-16: 840 OI2026-10-21: 840 OI2026-10-23: 839 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, 2026Viewing839-1
Oct 21, 20268400
Oct 16, 2026840-1
Oct 15, 2026841-1
Oct 14, 20268420
Oct 13, 2026842+1
Oct 09, 2026841-25
Oct 08, 20268660
Oct 07, 20268660
Oct 06, 2026866+37
Oct 05, 2026829+1
Oct 02, 2026828No prior observation