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Contract OI history

Back to BRK.B

Dec 15, 2028 EXPIRATION

BRK.B $300.00 Put

BRKB281215P00300000

Latest saved OI76Oct 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 $300.00 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. 76380 2026-10-02: 69 OI2026-10-05: 69 OI2026-10-06: 69 OI2026-10-07: 69 OI2026-10-08: 69 OI2026-10-09: 69 OI2026-10-13: 69 OI2026-10-14: 69 OI2026-10-15: 69 OI2026-10-16: 69 OI2026-10-21: 76 OI2026-10-23: 76 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, 2026Viewing760
Oct 21, 202676+7
Oct 16, 2026690
Oct 15, 2026690
Oct 14, 2026690
Oct 13, 2026690
Oct 09, 2026690
Oct 08, 2026690
Oct 07, 2026690
Oct 06, 2026690
Oct 05, 2026690
Oct 02, 202669No prior observation