OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $490.00 Put

BRKB270319P00490000

Latest saved OI576Oct 23, 2026
Last change+37vs 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. 5762880 2026-10-02: 518 OI2026-10-05: 526 OI2026-10-06: 529 OI2026-10-07: 529 OI2026-10-08: 529 OI2026-10-09: 534 OI2026-10-13: 537 OI2026-10-14: 537 OI2026-10-15: 537 OI2026-10-16: 537 OI2026-10-21: 539 OI2026-10-23: 576 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, 2026Viewing576+37
Oct 21, 2026539+2
Oct 16, 20265370
Oct 15, 20265370
Oct 14, 20265370
Oct 13, 2026537+3
Oct 09, 2026534+5
Oct 08, 20265290
Oct 07, 20265290
Oct 06, 2026529+3
Oct 05, 2026526+8
Oct 02, 2026518No prior observation