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Contract OI history

Back to BRK.B

Sep 17, 2027 EXPIRATION

BRK.B $430.00 Put

BRKB270917P00430000

Latest saved OI37Oct 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 $430.00 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. 40200 2026-10-02: 35 OI2026-10-05: 35 OI2026-10-06: 40 OI2026-10-07: 40 OI2026-10-08: 40 OI2026-10-09: 40 OI2026-10-13: 39 OI2026-10-14: 39 OI2026-10-15: 39 OI2026-10-16: 39 OI2026-10-21: 37 OI2026-10-23: 37 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, 2026Viewing370
Oct 21, 202637-2
Oct 16, 2026390
Oct 15, 2026390
Oct 14, 2026390
Oct 13, 202639-1
Oct 09, 2026400
Oct 08, 2026400
Oct 07, 2026400
Oct 06, 202640+5
Oct 05, 2026350
Oct 02, 202635No prior observation