OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 21, 2028 EXPIRATION

BRK.B $430.00 Put

BRKB280121P00430000

Latest saved OI664Oct 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 $430.00 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. 6643320 2026-10-02: 663 OI2026-10-05: 663 OI2026-10-06: 663 OI2026-10-07: 663 OI2026-10-08: 663 OI2026-10-09: 663 OI2026-10-13: 663 OI2026-10-14: 663 OI2026-10-15: 663 OI2026-10-16: 664 OI2026-10-21: 664 OI2026-10-23: 664 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, 2026Viewing6640
Oct 21, 20266640
Oct 16, 2026664+1
Oct 15, 20266630
Oct 14, 20266630
Oct 13, 20266630
Oct 09, 20266630
Oct 08, 20266630
Oct 07, 20266630
Oct 06, 20266630
Oct 05, 20266630
Oct 02, 2026663No prior observation