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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $495.00 Put

BRKB261218P00495000

Latest saved OI768Oct 23, 2026
Last change+15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $495.00 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. 7683840 2026-10-02: 707 OI2026-10-05: 725 OI2026-10-06: 728 OI2026-10-07: 730 OI2026-10-08: 730 OI2026-10-09: 746 OI2026-10-13: 748 OI2026-10-14: 748 OI2026-10-15: 753 OI2026-10-16: 748 OI2026-10-21: 753 OI2026-10-23: 768 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, 2026Viewing768+15
Oct 21, 2026753+5
Oct 16, 2026748-5
Oct 15, 2026753+5
Oct 14, 20267480
Oct 13, 2026748+2
Oct 09, 2026746+16
Oct 08, 20267300
Oct 07, 2026730+2
Oct 06, 2026728+3
Oct 05, 2026725+18
Oct 02, 2026707No prior observation