OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $530.00 Put

BRKB261218P00530000

Latest saved OI878Oct 23, 2026
Last change+86vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $530.00 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. 8784390 2026-10-02: 683 OI2026-10-05: 680 OI2026-10-06: 706 OI2026-10-07: 706 OI2026-10-08: 706 OI2026-10-09: 707 OI2026-10-13: 706 OI2026-10-14: 706 OI2026-10-15: 710 OI2026-10-16: 752 OI2026-10-21: 792 OI2026-10-23: 878 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, 2026Viewing878+86
Oct 21, 2026792+40
Oct 16, 2026752+42
Oct 15, 2026710+4
Oct 14, 20267060
Oct 13, 2026706-1
Oct 09, 2026707+1
Oct 08, 20267060
Oct 07, 20267060
Oct 06, 2026706+26
Oct 05, 2026680-3
Oct 02, 2026683No prior observation