Weekly Stock Dossier · Aug 24–30, 2026
BRK/B
BERKSHIRE HATHAWAY INC-CL B
What changed in BRK/B this week?
Cut BRK/B from 6.6% to 4.2% of the reported 13F; $124M remained at quarter end.
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Why this stock, this week
Francois Rochon's filing was the edition's highest-ranked change in reported portfolio weight.
The evidence
One filing, one material change
- reported move
- TRIM
- previous weight
- 6.6%
- latest weight
- 4.2%
Francois Rochon
Filed Aug 26, 2026
The filing lens
13F filings disclose long US equity positions and can arrive up to 45 days after quarter-end. They do not reveal the manager's thesis, trades after quarter-end, shorts, cash, or most non-US assets.
Published Aug 30, 2026 · Reviewed primary-source research · Not investment advice.