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Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $425.00 Put

BRKB270319P00425000

Latest saved OI170Oct 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 $425.00 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. 170850 2026-10-02: 152 OI2026-10-05: 152 OI2026-10-06: 152 OI2026-10-07: 152 OI2026-10-08: 152 OI2026-10-09: 154 OI2026-10-13: 158 OI2026-10-14: 158 OI2026-10-15: 170 OI2026-10-16: 170 OI2026-10-21: 170 OI2026-10-23: 170 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, 2026Viewing1700
Oct 21, 20261700
Oct 16, 20261700
Oct 15, 2026170+12
Oct 14, 20261580
Oct 13, 2026158+4
Oct 09, 2026154+2
Oct 08, 20261520
Oct 07, 20261520
Oct 06, 20261520
Oct 05, 20261520
Oct 02, 2026152No prior observation