OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jun 17, 2027 EXPIRATION

BRK.B $450.00 Put

BRKB270617P00450000

Latest saved OI1,099Oct 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 $450.00 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. 1,0995490 2026-10-02: 1,028 OI2026-10-05: 1,032 OI2026-10-06: 1,057 OI2026-10-07: 1,082 OI2026-10-08: 1,082 OI2026-10-09: 1,094 OI2026-10-13: 1,093 OI2026-10-14: 1,093 OI2026-10-15: 1,093 OI2026-10-16: 1,094 OI2026-10-21: 1,097 OI2026-10-23: 1,099 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, 2026Viewing1,099+2
Oct 21, 20261,097+3
Oct 16, 20261,094+1
Oct 15, 20261,0930
Oct 14, 20261,0930
Oct 13, 20261,093-1
Oct 09, 20261,094+12
Oct 08, 20261,0820
Oct 07, 20261,082+25
Oct 06, 20261,057+25
Oct 05, 20261,032+4
Oct 02, 20261,028No prior observation