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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $390.00 Put

BRKB261218P00390000

Latest saved OI490Oct 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 $390.00 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. 4992490 2026-10-02: 465 OI2026-10-05: 499 OI2026-10-06: 497 OI2026-10-07: 497 OI2026-10-08: 497 OI2026-10-09: 493 OI2026-10-13: 493 OI2026-10-14: 493 OI2026-10-15: 494 OI2026-10-16: 488 OI2026-10-21: 490 OI2026-10-23: 490 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, 2026Viewing4900
Oct 21, 2026490+2
Oct 16, 2026488-6
Oct 15, 2026494+1
Oct 14, 20264930
Oct 13, 20264930
Oct 09, 2026493-4
Oct 08, 20264970
Oct 07, 20264970
Oct 06, 2026497-2
Oct 05, 2026499+34
Oct 02, 2026465No prior observation