OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $480.00 Put

BRKB261218P00480000

Latest saved OI2,026Oct 23, 2026
Last change+28vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $480.00 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. 2,2411,1200 2026-10-02: 2,241 OI2026-10-05: 2,130 OI2026-10-06: 2,091 OI2026-10-07: 2,083 OI2026-10-08: 2,083 OI2026-10-09: 2,076 OI2026-10-13: 2,136 OI2026-10-14: 2,136 OI2026-10-15: 2,080 OI2026-10-16: 2,003 OI2026-10-21: 1,998 OI2026-10-23: 2,026 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, 2026Viewing2,026+28
Oct 21, 20261,998-5
Oct 16, 20262,003-77
Oct 15, 20262,080-56
Oct 14, 20262,1360
Oct 13, 20262,136+60
Oct 09, 20262,076-7
Oct 08, 20262,0830
Oct 07, 20262,083-8
Oct 06, 20262,091-39
Oct 05, 20262,130-111
Oct 02, 20262,241No prior observation