OITracker Cboe delayed data

Contract OI history

Back to BRK.B

Jan 21, 2028 EXPIRATION

BRK.B $530.00 Put

BRKB280121P00530000

Latest saved OI284Oct 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 $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. 3931960 2026-10-02: 368 OI2026-10-05: 368 OI2026-10-06: 361 OI2026-10-07: 361 OI2026-10-08: 361 OI2026-10-09: 393 OI2026-10-13: 280 OI2026-10-14: 280 OI2026-10-15: 280 OI2026-10-16: 281 OI2026-10-21: 282 OI2026-10-23: 284 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, 2026Viewing284+2
Oct 21, 2026282+1
Oct 16, 2026281+1
Oct 15, 20262800
Oct 14, 20262800
Oct 13, 2026280-113
Oct 09, 2026393+32
Oct 08, 20263610
Oct 07, 20263610
Oct 06, 2026361-7
Oct 05, 20263680
Oct 02, 2026368No prior observation