OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 21, 2028 EXPIRATION

BRK.B $490.00 Put

BRKB280121P00490000

Latest saved OI1,128Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $490.00 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. 1,1315650 2026-10-02: 1,123 OI2026-10-05: 1,122 OI2026-10-06: 1,122 OI2026-10-07: 1,122 OI2026-10-08: 1,122 OI2026-10-09: 1,122 OI2026-10-13: 1,121 OI2026-10-14: 1,121 OI2026-10-15: 1,131 OI2026-10-16: 1,131 OI2026-10-21: 1,130 OI2026-10-23: 1,128 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, 2026Viewing1,128-2
Oct 21, 20261,130-1
Oct 16, 20261,1310
Oct 15, 20261,131+10
Oct 14, 20261,1210
Oct 13, 20261,121-1
Oct 09, 20261,1220
Oct 08, 20261,1220
Oct 07, 20261,1220
Oct 06, 20261,1220
Oct 05, 20261,122-1
Oct 02, 20261,123No prior observation