OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 15, 2028 EXPIRATION

BRK.B $520.00 Put

BRKB281215P00520000

Latest saved OI1,113Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $520.00 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. 1,1155570 2026-10-02: 1,099 OI2026-10-05: 1,099 OI2026-10-06: 1,099 OI2026-10-07: 1,113 OI2026-10-08: 1,113 OI2026-10-09: 1,113 OI2026-10-13: 1,113 OI2026-10-14: 1,113 OI2026-10-15: 1,113 OI2026-10-16: 1,112 OI2026-10-21: 1,115 OI2026-10-23: 1,113 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, 2026Viewing1,113-2
Oct 21, 20261,115+3
Oct 16, 20261,112-1
Oct 15, 20261,1130
Oct 14, 20261,1130
Oct 13, 20261,1130
Oct 09, 20261,1130
Oct 08, 20261,1130
Oct 07, 20261,113+14
Oct 06, 20261,0990
Oct 05, 20261,0990
Oct 02, 20261,099No prior observation