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Contract OI history

Back to BRK.B

Nov 20, 2026 EXPIRATION

BRK.B $490.00 Put

BRKB261120P00490000

Latest saved OI1,650Oct 23, 2026
Last change-22vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $490.00 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. 1,6728360 2026-10-02: 715 OI2026-10-05: 726 OI2026-10-06: 784 OI2026-10-07: 825 OI2026-10-08: 825 OI2026-10-09: 900 OI2026-10-13: 916 OI2026-10-14: 916 OI2026-10-15: 946 OI2026-10-16: 980 OI2026-10-21: 1,672 OI2026-10-23: 1,650 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, 2026Viewing1,650-22
Oct 21, 20261,672+692
Oct 16, 2026980+34
Oct 15, 2026946+30
Oct 14, 20269160
Oct 13, 2026916+16
Oct 09, 2026900+75
Oct 08, 20268250
Oct 07, 2026825+41
Oct 06, 2026784+58
Oct 05, 2026726+11
Oct 02, 2026715No prior observation