OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $220.00 Put

BRKB261218P00220000

Latest saved OI774Oct 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 $220.00 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. 7743870 2026-10-02: 774 OI2026-10-05: 774 OI2026-10-06: 774 OI2026-10-07: 774 OI2026-10-08: 774 OI2026-10-09: 774 OI2026-10-13: 774 OI2026-10-14: 774 OI2026-10-15: 774 OI2026-10-16: 774 OI2026-10-21: 774 OI2026-10-23: 774 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, 2026Viewing7740
Oct 21, 20267740
Oct 16, 20267740
Oct 15, 20267740
Oct 14, 20267740
Oct 13, 20267740
Oct 09, 20267740
Oct 08, 20267740
Oct 07, 20267740
Oct 06, 20267740
Oct 05, 20267740
Oct 02, 2026774No prior observation