OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jun 17, 2027 EXPIRATION

BRK.B $535.00 Put

BRKB270617P00535000

Latest saved OI29Oct 23, 2026
Last change+22vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $535.00 put open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 29140 2026-10-15: 0 OI2026-10-16: 0 OI2026-10-21: 7 OI2026-10-23: 29 OI Oct 15, 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, 2026Viewing29+22
Oct 21, 20267+7
Oct 16, 202600
Oct 15, 20260No prior observation