OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 15, 2027 EXPIRATION

BRK.B $300.00 Put

BRKB270115P00300000

Latest saved OI1,120Oct 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 $300.00 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. 1,1205600 2026-10-02: 781 OI2026-10-05: 1,115 OI2026-10-06: 1,116 OI2026-10-07: 1,116 OI2026-10-08: 1,116 OI2026-10-09: 1,117 OI2026-10-13: 1,117 OI2026-10-14: 1,117 OI2026-10-15: 1,119 OI2026-10-16: 1,119 OI2026-10-21: 1,120 OI2026-10-23: 1,120 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, 2026Viewing1,1200
Oct 21, 20261,120+1
Oct 16, 20261,1190
Oct 15, 20261,119+2
Oct 14, 20261,1170
Oct 13, 20261,1170
Oct 09, 20261,117+1
Oct 08, 20261,1160
Oct 07, 20261,1160
Oct 06, 20261,116+1
Oct 05, 20261,115+334
Oct 02, 2026781No prior observation