OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Oct 30, 2026 EXPIRATION

BRK.B $520.00 Call

BRKB261030C00520000

Latest saved OI1,727Oct 23, 2026
Last change-27vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $520.00 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. 1,8179080 2026-10-02: 349 OI2026-10-05: 373 OI2026-10-06: 480 OI2026-10-07: 480 OI2026-10-08: 480 OI2026-10-09: 1,817 OI2026-10-13: 1,787 OI2026-10-14: 1,787 OI2026-10-15: 1,790 OI2026-10-16: 1,774 OI2026-10-21: 1,754 OI2026-10-23: 1,727 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, 2026Viewing1,727-27
Oct 21, 20261,754-20
Oct 16, 20261,774-16
Oct 15, 20261,790+3
Oct 14, 20261,7870
Oct 13, 20261,787-30
Oct 09, 20261,817+1,337
Oct 08, 20264800
Oct 07, 20264800
Oct 06, 2026480+107
Oct 05, 2026373+24
Oct 02, 2026349No prior observation