OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $430.00 Put

BRKB261218P00430000

Latest saved OI1,088Oct 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. 1,0885440 2026-10-02: 1,045 OI2026-10-05: 1,045 OI2026-10-06: 1,046 OI2026-10-07: 1,046 OI2026-10-08: 1,046 OI2026-10-09: 1,036 OI2026-10-13: 1,036 OI2026-10-14: 1,036 OI2026-10-15: 1,036 OI2026-10-16: 1,064 OI2026-10-21: 1,088 OI2026-10-23: 1,088 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, 2026Viewing1,0880
Oct 21, 20261,088+24
Oct 16, 20261,064+28
Oct 15, 20261,0360
Oct 14, 20261,0360
Oct 13, 20261,0360
Oct 09, 20261,036-10
Oct 08, 20261,0460
Oct 07, 20261,0460
Oct 06, 20261,046+1
Oct 05, 20261,0450
Oct 02, 20261,045No prior observation