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Contract OI history

Back to BRK.B

Oct 30, 2026 EXPIRATION

BRK.B $507.50 Put

BRKB261030P00507500

Latest saved OI8Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $507.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 840 2026-10-09: 0 OI2026-10-13: 5 OI2026-10-14: 5 OI2026-10-15: 5 OI2026-10-16: 5 OI2026-10-21: 5 OI2026-10-23: 8 OI Oct 09, 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, 2026Viewing8+3
Oct 21, 202650
Oct 16, 202650
Oct 15, 202650
Oct 14, 202650
Oct 13, 20265+5
Oct 09, 20260No prior observation