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Berkshire Hathaway Class B
BRK.B

4,560 hedge funds and large institutions have $468B invested in Berkshire Hathaway Class B in 2025 Q1 according to their latest regulatory filings, with 226 funds opening new positions, 1,903 increasing their positions, 1,805 reducing their positions, and 107 closing their positions.

New
Increased
Maintained
Reduced
Closed

111% more first-time investments, than exits

New positions opened: 226 | Existing positions closed: 107

52% more call options, than puts

Call options by funds: $11.1B | Put options by funds: $7.32B

27% more funds holding in top 10

Funds holding in top 10: 732 → 932 (+200)

19% more capital invested

Capital invested by funds: $395B → $468B (+$73.4B)

5% more repeat investments, than reductions

Existing positions increased: 1,903 | Existing positions reduced: 1,805

1% more funds holding

Funds holding: 4,518 → 4,560 (+42)

0% less ownership

Funds ownership: 65.74% → 65.74% (-0%)

Holders
4,560
Holders Change
+42
Holders Change %
+0.93%
% of All Funds
61.15%
Holding in Top 10
932
Holding in Top 10 Change
+200
Holding in Top 10 Change %
+27.32%
% of All Funds
12.5%
New
226
Increased
1,903
Reduced
1,805
Closed
107
Calls
$11.1B
Puts
$7.32B
Net Calls
+$3.81B
Net Calls Change
-$334M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$1.98B
2
Vanguard Group
Vanguard Group
Pennsylvania
+$1.25B
3
JP Morgan Chase
JP Morgan Chase
New York
+$814M
4
Geode Capital Management
Geode Capital Management
Massachusetts
+$684M
5
BlackRock
BlackRock
New York
+$563M

Top Sellers

1
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
-$1.28B
2
Gates Foundation Trust
Gates Foundation Trust
Washington
-$1.21B
3
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$570M
4
AIS
AM Investment Strategies
Tennessee
-$497M
5
Flossbach Von Storch
Flossbach Von Storch
Germany
-$439M
Name Holding Trade Value Shares
Change 		Change in
Stake
RJA
4551
Ross\Johnson & Associates
Minnesota
$7.99K +$5.35K +11 +275%
HIA
4552
HFM Investment Advisors
New Jersey
$5.86K +$5.35K +11 New
APM
4553
a16z Perennial Management
California
$5.33K – – –
CF
4554
Conquis Financial
California
$5.33K – – –
LFASL
4555
Lugano Financial Advisors SA (LFA)
Switzerland
$5.33K – – –
WOC
4556
West Oak Capital
California
$5.03K – – –
ECM
4557
Eisler Capital Management
United Kingdom
$2.66K -$5.09M -10,462 -100%
DI
4558
DRH Investments
California
$1.6K – – –
PEAK6
4559
PEAK6
Illinois
$1.43K – – –
CIAM
4560
Caitong International Asset Management
Hong Kong
$533 -$238K -490 -100%
HIW
4561
Holos Integrated Wealth
Pennsylvania
$533 – – –
Qube Research & Technologies (QRT)
4562
Qube Research & Technologies (QRT)
United Kingdom
– -$189M -387,856 Closed
Walleye Trading
4563
Walleye Trading
New York
– -$111M -229,285 Closed
A
4564
AustralianSuper
Australia
– -$93.5M -206,252 Closed
TC
4565
TwinBeech Capital
New York
– -$64.2M -141,585 Closed
SC
4566
SRB Corp
Massachusetts
– -$48.4M -106,799 Closed
C
4567
Consulta
United Kingdom
– -$45.3M -100,000 Closed
SCM
4568
Steadfast Capital Management
New York
– -$45.2M -99,739 Closed
Parallax Volatility Advisers
4569
Parallax Volatility Advisers
California
– -$48.1M -99,010 Closed
GJCM
4570
Grand Jean Capital Management
California
– -$43.2M -95,283 Closed
Capital Fund Management (CFM)
4571
Capital Fund Management (CFM)
France
– -$34.4M -70,750 Closed
Twin Tree Management
4572
Twin Tree Management
Texas
– -$28.1M -57,701 Closed
PAMP
4573
Polar Asset Management Partners
Ontario, Canada
– -$23.6M -52,000 Closed
IMC Chicago
4574
IMC Chicago
Illinois
– -$24.6M -50,643 Closed
WWA
4575
WCG Wealth Advisors
Nevada
– -$20.2M -44,537 Closed
181 182
183
184 185

BRK.B Hedge Fund Activity: Q1 2025 in Review

4,560 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Berkshire Hathaway Class B (BRK.B) for Q1 2025, worth a combined $468B — up 19% from $395B a quarter earlier.

Buyers outnumbered sellers: 226 funds opened new BRK.B positions and 107 closed out — a net gain of 119 holders — while 1,903 added to existing stakes and 1,805 trimmed.

The largest buyer was Fidelity Investments, adding an estimated $1.98B. The largest seller was Assenagon Asset Management, cutting an estimated $1.28B.

  • 4,560 institutional investors held Berkshire Hathaway Class B (BRK.B) as of Q1 2025, up from 4,518 in Q4 2024.
  • Funds reported $468B of Berkshire Hathaway Class B stock for Q1 2025, up 19% quarter-over-quarter.
  • 226 funds opened new Berkshire Hathaway Class B positions in Q1 2025 and 107 closed out, a net change of +119 holders.
  • The largest Berkshire Hathaway Class B buyer in Q1 2025 was Fidelity Investments, an estimated $1.98B added.
  • The largest Berkshire Hathaway Class B seller in Q1 2025 was Assenagon Asset Management, an estimated $1.28B sold.

Based on aggregated 13F filings for Q1 2025.