OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $520.00 Put

BRKB270319P00520000

Latest saved OI1,009Oct 23, 2026
Last change+582vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $520.00 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. 1,0095040 2026-10-02: 257 OI2026-10-05: 257 OI2026-10-06: 260 OI2026-10-07: 260 OI2026-10-08: 260 OI2026-10-09: 278 OI2026-10-13: 286 OI2026-10-14: 286 OI2026-10-15: 287 OI2026-10-16: 348 OI2026-10-21: 427 OI2026-10-23: 1,009 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, 2026Viewing1,009+582
Oct 21, 2026427+79
Oct 16, 2026348+61
Oct 15, 2026287+1
Oct 14, 20262860
Oct 13, 2026286+8
Oct 09, 2026278+18
Oct 08, 20262600
Oct 07, 20262600
Oct 06, 2026260+3
Oct 05, 20262570
Oct 02, 2026257No prior observation