OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 15, 2028 EXPIRATION

BRK.B $550.00 Put

BRKB281215P00550000

Latest saved OI1,267Oct 23, 2026
Last change+47vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $550.00 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. 1,2676330 2026-10-02: 1,220 OI2026-10-05: 1,220 OI2026-10-06: 1,220 OI2026-10-07: 1,220 OI2026-10-08: 1,220 OI2026-10-09: 1,220 OI2026-10-13: 1,220 OI2026-10-14: 1,220 OI2026-10-15: 1,220 OI2026-10-16: 1,220 OI2026-10-21: 1,220 OI2026-10-23: 1,267 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, 2026Viewing1,267+47
Oct 21, 20261,2200
Oct 16, 20261,2200
Oct 15, 20261,2200
Oct 14, 20261,2200
Oct 13, 20261,2200
Oct 09, 20261,2200
Oct 08, 20261,2200
Oct 07, 20261,2200
Oct 06, 20261,2200
Oct 05, 20261,2200
Oct 02, 20261,220No prior observation