The smart money on BRK.B

Every signal we track for BRK.B in one place: which legendary investors hold it, which members of Congress traded it, insider open-market buys, and activist stakes. From public SEC and STOCK Act filings. Free — not investment advice.

2
Superinvestors
6
Congress trades
1
Insider buys
0
Activist stakes

Superinvestors · 2 of 15 hold it

Investor% of portfolioPositionLast quarter
Bill Gates21.4%$7.4BTRIMMED
George Soros0.8%$67MHELD

Congress · 6 disclosed trades

Trade dateMemberActionAmount
2026-07-30Hon. Richard Dean Dr McCormick GA06BUY$1.001k–$15k
2026-07-28Hon. Maria Elvira Salazar FL27BUY$1.001k–$15k
2026-07-28Hon. Maria Elvira Salazar FL27BUY$15.001k–$50k
2026-03-13Hon. August Lee Pfluger II TX11BUY$15.001k–$50k
2026-02-10Hon. Christian D. Menefee TX18SELL$1.001k–$15k
2026-02-10Hon. Christian D. Menefee TX18SELL$15.001k–$50k

Insider buys · open-market purchases (Form 4)

SeenInsiderRoleBought
2026-08-13O'Sullivan Michael J.See Remarks$250.1K

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13F is a quarterly snapshot (up to 45 days late); Congress and insider filings land within days. Public data, not investment advice.