OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 15, 2028 EXPIRATION

BRK.B $300.00 Call

BRKB281215C00300000

Latest saved OI411Oct 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 $300.00 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. 4112050 2026-10-02: 324 OI2026-10-05: 321 OI2026-10-06: 321 OI2026-10-07: 321 OI2026-10-08: 321 OI2026-10-09: 321 OI2026-10-13: 321 OI2026-10-14: 321 OI2026-10-15: 321 OI2026-10-16: 321 OI2026-10-21: 409 OI2026-10-23: 411 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, 2026Viewing411+2
Oct 21, 2026409+88
Oct 16, 20263210
Oct 15, 20263210
Oct 14, 20263210
Oct 13, 20263210
Oct 09, 20263210
Oct 08, 20263210
Oct 07, 20263210
Oct 06, 20263210
Oct 05, 2026321-3
Oct 02, 2026324No prior observation