OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $445.00 Put

BRKB270319P00445000

Latest saved OI111Oct 23, 2026
Last change+8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $445.00 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. 111550 2026-10-02: 65 OI2026-10-05: 67 OI2026-10-06: 67 OI2026-10-07: 67 OI2026-10-08: 67 OI2026-10-09: 68 OI2026-10-13: 93 OI2026-10-14: 93 OI2026-10-15: 103 OI2026-10-16: 103 OI2026-10-21: 103 OI2026-10-23: 111 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, 2026Viewing111+8
Oct 21, 20261030
Oct 16, 20261030
Oct 15, 2026103+10
Oct 14, 2026930
Oct 13, 202693+25
Oct 09, 202668+1
Oct 08, 2026670
Oct 07, 2026670
Oct 06, 2026670
Oct 05, 202667+2
Oct 02, 202665No prior observation