OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Oct 30, 2026 EXPIRATION

BRK.B $537.50 Put

BRKB261030P00537500

Latest saved OI2,202Oct 23, 2026
Last change—vs previous saved observation
Saved market days1Oct 23, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $537.50 put open interest history 1 saved observations from 2026-10-23 to 2026-10-23. Exact values and changes are listed in the table below. 2,2021,1010 2026-10-23: 2,202 OI Oct 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, 2026Viewing2,202No prior observation