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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $470.00 Put

BRKB261218P00470000

Latest saved OI1,359Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $470.00 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. 1,4517250 2026-10-02: 1,253 OI2026-10-05: 1,251 OI2026-10-06: 1,240 OI2026-10-07: 1,234 OI2026-10-08: 1,234 OI2026-10-09: 1,299 OI2026-10-13: 1,304 OI2026-10-14: 1,304 OI2026-10-15: 1,451 OI2026-10-16: 1,442 OI2026-10-21: 1,358 OI2026-10-23: 1,359 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, 2026Viewing1,359+1
Oct 21, 20261,358-84
Oct 16, 20261,442-9
Oct 15, 20261,451+147
Oct 14, 20261,3040
Oct 13, 20261,304+5
Oct 09, 20261,299+65
Oct 08, 20261,2340
Oct 07, 20261,234-6
Oct 06, 20261,240-11
Oct 05, 20261,251-2
Oct 02, 20261,253No prior observation