OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Oct 23, 2026 EXPIRATION

BRK.B $522.50 Put

BRKB261023P00522500

Latest saved OI1,907Oct 23, 2026
Last change-101vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $522.50 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. 2,0081,0040 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 0 OI2026-10-08: 0 OI2026-10-09: 0 OI2026-10-13: 1,075 OI2026-10-14: 1,075 OI2026-10-15: 1,086 OI2026-10-16: 1,090 OI2026-10-21: 2,008 OI2026-10-23: 1,907 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, 2026Viewing1,907-101
Oct 21, 20262,008+918
Oct 16, 20261,090+4
Oct 15, 20261,086+11
Oct 14, 20261,0750
Oct 13, 20261,075+1,075
Oct 09, 202600
Oct 08, 202600
Oct 07, 202600
Oct 06, 202600
Oct 05, 202600
Oct 02, 20260No prior observation