OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 15, 2027 EXPIRATION

BRK.B $450.00 Put

BRKB270115P00450000

Latest saved OI2,880Oct 23, 2026
Last change-1vs 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. 2,9191,4590 2026-10-02: 2,871 OI2026-10-05: 2,875 OI2026-10-06: 2,851 OI2026-10-07: 2,855 OI2026-10-08: 2,855 OI2026-10-09: 2,879 OI2026-10-13: 2,919 OI2026-10-14: 2,919 OI2026-10-15: 2,919 OI2026-10-16: 2,895 OI2026-10-21: 2,881 OI2026-10-23: 2,880 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, 2026Viewing2,880-1
Oct 21, 20262,881-14
Oct 16, 20262,895-24
Oct 15, 20262,9190
Oct 14, 20262,9190
Oct 13, 20262,919+40
Oct 09, 20262,879+24
Oct 08, 20262,8550
Oct 07, 20262,855+4
Oct 06, 20262,851-24
Oct 05, 20262,875+4
Oct 02, 20262,871No prior observation