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Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $400.00 Put

BRKB270319P00400000

Latest saved OI185Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $400.00 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. 185920 2026-10-02: 167 OI2026-10-05: 180 OI2026-10-06: 180 OI2026-10-07: 180 OI2026-10-08: 180 OI2026-10-09: 180 OI2026-10-13: 185 OI2026-10-14: 185 OI2026-10-15: 185 OI2026-10-16: 185 OI2026-10-21: 185 OI2026-10-23: 185 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, 2026Viewing1850
Oct 21, 20261850
Oct 16, 20261850
Oct 15, 20261850
Oct 14, 20261850
Oct 13, 2026185+5
Oct 09, 20261800
Oct 08, 20261800
Oct 07, 20261800
Oct 06, 20261800
Oct 05, 2026180+13
Oct 02, 2026167No prior observation