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Contract OI history

Back to BRK.B

Dec 18, 2026 EXPIRATION

BRK.B $490.00 Put

BRKB261218P00490000

Latest saved OI1,451Oct 23, 2026
Last change+25vs 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. 1,4517250 2026-10-02: 1,227 OI2026-10-05: 1,227 OI2026-10-06: 1,228 OI2026-10-07: 1,230 OI2026-10-08: 1,230 OI2026-10-09: 1,246 OI2026-10-13: 1,268 OI2026-10-14: 1,268 OI2026-10-15: 1,283 OI2026-10-16: 1,274 OI2026-10-21: 1,426 OI2026-10-23: 1,451 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, 2026Viewing1,451+25
Oct 21, 20261,426+152
Oct 16, 20261,274-9
Oct 15, 20261,283+15
Oct 14, 20261,2680
Oct 13, 20261,268+22
Oct 09, 20261,246+16
Oct 08, 20261,2300
Oct 07, 20261,230+2
Oct 06, 20261,228+1
Oct 05, 20261,2270
Oct 02, 20261,227No prior observation