OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 21, 2028 EXPIRATION

BRK.B $480.00 Put

BRKB280121P00480000

Latest saved OI621Oct 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 $480.00 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. 6213100 2026-10-02: 173 OI2026-10-05: 173 OI2026-10-06: 591 OI2026-10-07: 591 OI2026-10-08: 591 OI2026-10-09: 591 OI2026-10-13: 621 OI2026-10-14: 621 OI2026-10-15: 621 OI2026-10-16: 621 OI2026-10-21: 621 OI2026-10-23: 621 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, 2026Viewing6210
Oct 21, 20266210
Oct 16, 20266210
Oct 15, 20266210
Oct 14, 20266210
Oct 13, 2026621+30
Oct 09, 20265910
Oct 08, 20265910
Oct 07, 20265910
Oct 06, 2026591+418
Oct 05, 20261730
Oct 02, 2026173No prior observation