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 portfolio | Position | Last quarter |
|---|---|---|---|
| Bill Gates | 21.4% | $7.4B | TRIMMED |
| George Soros | 0.8% | $67M | HELD |
Congress · 6 disclosed trades
| Trade date | Member | Action | Amount |
|---|---|---|---|
| 2026-07-30 | Hon. Richard Dean Dr McCormick | BUY | $1.001k–$15k |
| 2026-07-28 | Hon. Maria Elvira Salazar | BUY | $1.001k–$15k |
| 2026-07-28 | Hon. Maria Elvira Salazar | BUY | $15.001k–$50k |
| 2026-03-13 | Hon. August Lee Pfluger II | BUY | $15.001k–$50k |
| 2026-02-10 | Hon. Christian D. Menefee | SELL | $1.001k–$15k |
| 2026-02-10 | Hon. Christian D. Menefee | SELL | $15.001k–$50k |
Insider buys · open-market purchases (Form 4)
| Seen | Insider | Role | Bought |
|---|---|---|---|
| 2026-08-13 | O'Sullivan Michael J. | See Remarks | $250.1K |