OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 15, 2027 EXPIRATION

BRK.B $400.00 Put

BRKB270115P00400000

Latest saved OI3,745Oct 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 $400.00 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. 3,7551,8770 2026-10-02: 3,612 OI2026-10-05: 3,620 OI2026-10-06: 3,607 OI2026-10-07: 3,607 OI2026-10-08: 3,607 OI2026-10-09: 3,584 OI2026-10-13: 3,750 OI2026-10-14: 3,750 OI2026-10-15: 3,755 OI2026-10-16: 3,755 OI2026-10-21: 3,745 OI2026-10-23: 3,745 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, 2026Viewing3,7450
Oct 21, 20263,745-10
Oct 16, 20263,7550
Oct 15, 20263,755+5
Oct 14, 20263,7500
Oct 13, 20263,750+166
Oct 09, 20263,584-23
Oct 08, 20263,6070
Oct 07, 20263,6070
Oct 06, 20263,607-13
Oct 05, 20263,620+8
Oct 02, 20263,612No prior observation