Berkshire Hathaway Class B
BRK.B
4,878 hedge funds and large institutions have $458B invested in Berkshire Hathaway Class B in 2025 Q4 according to their latest regulatory filings, with 526 funds opening new positions, 1,808 increasing their positions, 1,933 reducing their positions, and 131 closing their positions.
302% more first-time investments, than exits
New positions opened: 526 | Existing positions closed: 131
48% more call options, than puts
Call options by funds: $12.3B | Put options by funds: $8.27B
7% more funds holding
Funds holding: 4,577 → 4,878 (+301)
2.85% more ownership
Funds ownership: 63.5% → 66.35% (+2.9%)
4% more capital invested
Capital invested by funds: $440B → $458B (+$18.1B)
6% less repeat investments, than reductions
Existing positions increased: 1,808 | Existing positions reduced: 1,933
2% less funds holding in top 10
Funds holding in top 10: 658 → 643 (-15)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$3.27B |
| 2 |
Corient Private Wealth
Miami,
Florida
|
+$2.78B |
| 3 |
JSC
J. Stern & Co
London,
United Kingdom
|
+$2.43B |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
+$1.38B |
| 5 |
GQG Partners
Ft. Lauderdale,
Florida
|
+$994M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Gates Foundation Trust
Kirkland,
Washington
|
-$1.17B |
| 2 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$470M |
| 3 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$461M |
| 4 |
Bessemer Group
Woodbridge,
New Jersey
|
-$421M |
| 5 |
Jane Street
New York
|
-$299M |
BRK.B Hedge Fund Activity: Q4 2025 in Review
4,878 of the 8,225 institutional investors tracked by Wall St. Rank reported a position in Berkshire Hathaway Class B (BRK.B) for Q4 2025, worth a combined $458B — up 4.1% from $440B a quarter earlier.
Buyers outnumbered sellers: 526 funds opened new BRK.B positions and 131 closed out — a net gain of 395 holders — while 1,808 added to existing stakes and 1,933 trimmed.
The largest buyer was BlackRock, adding an estimated $3.27B. The largest seller was Gates Foundation Trust, cutting an estimated $1.17B.
- 4,878 institutional investors held Berkshire Hathaway Class B (BRK.B) as of Q4 2025, up from 4,577 in Q3 2025.
- Funds reported $458B of Berkshire Hathaway Class B stock for Q4 2025, up 4.1% quarter-over-quarter.
- 526 funds opened new Berkshire Hathaway Class B positions in Q4 2025 and 131 closed out, a net change of +395 holders.
- The largest Berkshire Hathaway Class B buyer in Q4 2025 was BlackRock, an estimated $3.27B added.
- The largest Berkshire Hathaway Class B seller in Q4 2025 was Gates Foundation Trust, an estimated $1.17B sold.
Based on aggregated 13F filings for Q4 2025.