OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 21, 2028 EXPIRATION

BRK.B $320.00 Call

BRKB280121C00320000

Latest saved OI585Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $320.00 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. 5852920 2026-10-02: 584 OI2026-10-05: 584 OI2026-10-06: 585 OI2026-10-07: 585 OI2026-10-08: 585 OI2026-10-09: 585 OI2026-10-13: 585 OI2026-10-14: 585 OI2026-10-15: 585 OI2026-10-16: 585 OI2026-10-21: 585 OI2026-10-23: 585 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, 2026Viewing5850
Oct 21, 20265850
Oct 16, 20265850
Oct 15, 20265850
Oct 14, 20265850
Oct 13, 20265850
Oct 09, 20265850
Oct 08, 20265850
Oct 07, 20265850
Oct 06, 2026585+1
Oct 05, 20265840
Oct 02, 2026584No prior observation