OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Nov 20, 2026 EXPIRATION

BRK.B $300.00 Put

BRKB261120P00300000

Latest saved OI6,314Oct 23, 2026
Last change+60vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $300.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6,3143,1570 2026-10-02: 30 OI2026-10-05: 30 OI2026-10-06: 30 OI2026-10-07: 137 OI2026-10-08: 137 OI2026-10-09: 249 OI2026-10-13: 249 OI2026-10-14: 249 OI2026-10-15: 249 OI2026-10-16: 249 OI2026-10-21: 6,254 OI2026-10-23: 6,314 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, 2026Viewing6,314+60
Oct 21, 20266,254+6,005
Oct 16, 20262490
Oct 15, 20262490
Oct 14, 20262490
Oct 13, 20262490
Oct 09, 2026249+112
Oct 08, 20261370
Oct 07, 2026137+107
Oct 06, 2026300
Oct 05, 2026300
Oct 02, 202630No prior observation