OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $500.00 Put

BRKB261218P00500000

Latest saved OI2,861Oct 23, 2026
Last change-26vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $500.00 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. 3,0501,5250 2026-10-02: 3,021 OI2026-10-05: 3,050 OI2026-10-06: 2,749 OI2026-10-07: 2,753 OI2026-10-08: 2,753 OI2026-10-09: 2,539 OI2026-10-13: 2,806 OI2026-10-14: 2,806 OI2026-10-15: 2,808 OI2026-10-16: 2,833 OI2026-10-21: 2,887 OI2026-10-23: 2,861 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, 2026Viewing2,861-26
Oct 21, 20262,887+54
Oct 16, 20262,833+25
Oct 15, 20262,808+2
Oct 14, 20262,8060
Oct 13, 20262,806+267
Oct 09, 20262,539-214
Oct 08, 20262,7530
Oct 07, 20262,753+4
Oct 06, 20262,749-301
Oct 05, 20263,050+29
Oct 02, 20263,021No prior observation