OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Sep 17, 2027 EXPIRATION

BRK.B $540.00 Put

BRKB270917P00540000

Latest saved OI403Oct 23, 2026
Last change+287vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $540.00 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. 4032010 2026-10-02: 5 OI2026-10-05: 6 OI2026-10-06: 6 OI2026-10-07: 6 OI2026-10-08: 6 OI2026-10-09: 13 OI2026-10-13: 14 OI2026-10-14: 14 OI2026-10-15: 116 OI2026-10-16: 116 OI2026-10-21: 116 OI2026-10-23: 403 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, 2026Viewing403+287
Oct 21, 20261160
Oct 16, 20261160
Oct 15, 2026116+102
Oct 14, 2026140
Oct 13, 202614+1
Oct 09, 202613+7
Oct 08, 202660
Oct 07, 202660
Oct 06, 202660
Oct 05, 20266+1
Oct 02, 20265No prior observation