OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 15, 2027 EXPIRATION

BRK.B $520.00 Put

BRKB270115P00520000

Latest saved OI2,420Oct 23, 2026
Last change+121vs 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. 2,4201,2100 2026-10-02: 2,127 OI2026-10-05: 2,127 OI2026-10-06: 2,130 OI2026-10-07: 2,117 OI2026-10-08: 2,117 OI2026-10-09: 2,148 OI2026-10-13: 2,142 OI2026-10-14: 2,142 OI2026-10-15: 2,186 OI2026-10-16: 2,221 OI2026-10-21: 2,299 OI2026-10-23: 2,420 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, 2026Viewing2,420+121
Oct 21, 20262,299+78
Oct 16, 20262,221+35
Oct 15, 20262,186+44
Oct 14, 20262,1420
Oct 13, 20262,142-6
Oct 09, 20262,148+31
Oct 08, 20262,1170
Oct 07, 20262,117-13
Oct 06, 20262,130+3
Oct 05, 20262,1270
Oct 02, 20262,127No prior observation