OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $450.00 Put

BRKB270319P00450000

Latest saved OI773Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $450.00 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. 7733860 2026-10-02: 738 OI2026-10-05: 759 OI2026-10-06: 761 OI2026-10-07: 761 OI2026-10-08: 761 OI2026-10-09: 768 OI2026-10-13: 768 OI2026-10-14: 768 OI2026-10-15: 773 OI2026-10-16: 772 OI2026-10-21: 771 OI2026-10-23: 773 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, 2026Viewing773+2
Oct 21, 2026771-1
Oct 16, 2026772-1
Oct 15, 2026773+5
Oct 14, 20267680
Oct 13, 20267680
Oct 09, 2026768+7
Oct 08, 20267610
Oct 07, 20267610
Oct 06, 2026761+2
Oct 05, 2026759+21
Oct 02, 2026738No prior observation