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Arrowhead Research

261 hedge funds and large institutions have $1.32B invested in Arrowhead Research in 2025 Q1 according to their latest regulatory filings, with 43 funds opening new positions, 86 increasing their positions, 81 reducing their positions, and 47 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
261
Holders Change
-7
Holders Change %
-2.61%
% of All Funds
3.55%
Holding in Top 10
5
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+66.67%
% of All Funds
0.07%
New
43
Increased
86
Reduced
81
Closed
47
Calls
$4.66M
Puts
$6.24M
Net Calls
-$1.58M
Net Calls Change
-$3.28M
Name Holding Trade Value Shares
Change
Shares
Change %
BlackRock
1
BlackRock
New York
$254M +$47.8M +3,748,154 +23%
Vanguard Group
2
Vanguard Group
Pennsylvania
$168M +$13M +1,018,273 +8%
ACA
3
Avoro Capital Advisors
New York
$142M
State Street
4
State Street
Massachusetts
$89.2M +$12.5M +983,022 +16%
SPC
5
Slate Path Capital
New York
$66.7M
UBS AM
6
UBS AM
Illinois
$61M +$35.4M +2,774,933 +138%
Fidelity Investments
7
Fidelity Investments
Massachusetts
$42.2M -$22.8M -1,786,001 -35%
Geode Capital Management
8
Geode Capital Management
Massachusetts
$37.6M -$59.1K -4,635 -0.2%
SL
9
Siren LLC
Connecticut
$34M -$2.95M -231,801 -8%
T. Rowe Price Investment Management
10
T. Rowe Price Investment Management
Maryland
$32.2M +$276K +21,686 +0.9%
Morgan Stanley
11
Morgan Stanley
New York
$23.6M +$3.98M +312,124 +20%
Goldman Sachs
12
Goldman Sachs
New York
$22.2M +$5.7M +447,456 +35%
UBS Group
13
UBS Group
Switzerland
$20.7M +$4.09M +321,234 +25%
Northern Trust
14
Northern Trust
Illinois
$15.4M -$3.49M -273,606 -18%
Aberdeen Group
15
Aberdeen Group
United Kingdom
$13.7M +$7.93M +622,752 +138%
Charles Schwab
16
Charles Schwab
California
$13.2M +$224K +17,570 +2%
Citadel Advisors
17
Citadel Advisors
Florida
$12.6M +$7.89M +618,953 +168%
Two Sigma Investments
18
Two Sigma Investments
New York
$10.6M +$520K +40,801 +5%
WFC
19
Western Financial Corp
California
$10.4M
Bank of America
20
Bank of America
North Carolina
$10.2M +$2.83M +222,226 +39%
Bank of New York Mellon
21
Bank of New York Mellon
New York
$9.89M -$688K -54,019 -7%
Two Sigma Advisers
22
Two Sigma Advisers
New York
$9.22M +$3.73M +293,100 +68%
Millennium Management
23
Millennium Management
New York
$8.8M -$2.85M -223,754 -24%
PFM
24
Privium Fund Management
Netherlands
$8.02M +$3.17M +248,628 +65%
Principal Financial Group
25
Principal Financial Group
Iowa
$8.01M +$4.33M +340,191 +118%