OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Nov 20, 2026 EXPIRATION

BRK.B $530.00 Put

BRKB261120P00530000

Latest saved OI521Oct 23, 2026
Last change+11vs 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. 5212600 2026-10-02: 134 OI2026-10-05: 134 OI2026-10-06: 134 OI2026-10-07: 134 OI2026-10-08: 134 OI2026-10-09: 137 OI2026-10-13: 169 OI2026-10-14: 169 OI2026-10-15: 174 OI2026-10-16: 326 OI2026-10-21: 510 OI2026-10-23: 521 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, 2026Viewing521+11
Oct 21, 2026510+184
Oct 16, 2026326+152
Oct 15, 2026174+5
Oct 14, 20261690
Oct 13, 2026169+32
Oct 09, 2026137+3
Oct 08, 20261340
Oct 07, 20261340
Oct 06, 20261340
Oct 05, 20261340
Oct 02, 2026134No prior observation