OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 21, 2028 EXPIRATION

BRK.B $740.00 Call

BRKB280121C00740000

Latest saved OI1,353Oct 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 $740.00 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. 1,3536760 2026-10-02: 1,276 OI2026-10-05: 1,276 OI2026-10-06: 1,276 OI2026-10-07: 1,276 OI2026-10-08: 1,276 OI2026-10-09: 1,276 OI2026-10-13: 1,350 OI2026-10-14: 1,350 OI2026-10-15: 1,350 OI2026-10-16: 1,350 OI2026-10-21: 1,351 OI2026-10-23: 1,353 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, 2026Viewing1,353+2
Oct 21, 20261,351+1
Oct 16, 20261,3500
Oct 15, 20261,3500
Oct 14, 20261,3500
Oct 13, 20261,350+74
Oct 09, 20261,2760
Oct 08, 20261,2760
Oct 07, 20261,2760
Oct 06, 20261,2760
Oct 05, 20261,2760
Oct 02, 20261,276No prior observation