OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 15, 2027 EXPIRATION

BRK.B $420.00 Call

BRKB270115C00420000

Latest saved OI2,527Oct 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 $420.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,6951,3470 2026-10-02: 2,695 OI2026-10-05: 2,695 OI2026-10-06: 2,692 OI2026-10-07: 2,692 OI2026-10-08: 2,692 OI2026-10-09: 2,692 OI2026-10-13: 2,692 OI2026-10-14: 2,692 OI2026-10-15: 2,692 OI2026-10-16: 2,690 OI2026-10-21: 2,525 OI2026-10-23: 2,527 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, 2026Viewing2,527+2
Oct 21, 20262,525-165
Oct 16, 20262,690-2
Oct 15, 20262,6920
Oct 14, 20262,6920
Oct 13, 20262,6920
Oct 09, 20262,6920
Oct 08, 20262,6920
Oct 07, 20262,6920
Oct 06, 20262,692-3
Oct 05, 20262,6950
Oct 02, 20262,695No prior observation