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Arrowhead Research

280 hedge funds and large institutions have $1.67B invested in Arrowhead Research in 2025 Q2 according to their latest regulatory filings, with 59 funds opening new positions, 96 increasing their positions, 79 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

1.3% more ownership

Funds ownership: 75.34%76.64% (+1.3%)

22% less call options, than puts

Call options by funds: $8.24M | Put options by funds: $10.6M

40% less funds holding in top 10

Funds holding in top 10: 53 (-2)

Holders
280
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$8.24M
Puts
$10.6M
Net Calls
Net Calls Change

Top Buyers

1 +$36.7M
2 +$33.1M
3 +$29.3M
4
BBA
Baker Bros. Advisors
New York
+$14.8M
5
TI
Trexquant Investment
Connecticut
+$7.96M

Top Sellers

1 -$33.2M
2 -$27M
3 -$14.6M
4
Two Sigma Investments
Two Sigma Investments
New York
-$11.1M
5
State Street
State Street
Massachusetts
-$9.93M
Name Holding Trade Value Shares
Change
Change in
Stake
PA
126
Profund Advisors
Maryland
$535K
BNP Paribas Financial Markets
127
BNP Paribas Financial Markets
France
$534K
Zurich Cantonal Bank
128
Zurich Cantonal Bank
Switzerland
$530K
TRSOTSOK
129
Teachers Retirement System of the State of Kentucky
Kentucky
$520K
A
130
AlphaQuest
New York
$515K
COPPSERS
131
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$510K
ProShare Advisors
132
ProShare Advisors
Maryland
$508K
ASRS
133
Arizona State Retirement System
Arizona
$506K
ORI
134
Oak Ridge Investments
Illinois
$504K
YIH
135
Y-Intercept (HK)
Hong Kong
$491K
EP
136
Edgestream Partners
New Jersey
$487K
Edgewood Management
137
Edgewood Management
Connecticut
$474K
State Board of Administration of Florida Retirement System
138
State Board of Administration of Florida Retirement System
Florida
$470K
Teacher Retirement System of Texas
139
Teacher Retirement System of Texas
Texas
$468K
OPERF
140
Oregon Public Employees Retirement Fund
Oregon
$452K
CUAMC
141
China Universal Asset Management Company
China
$438K
PFSRSONJ
142
Police & Firemen's Retirement System of New Jersey
New Jersey
$432K
Amundi
143
Amundi
France
$426K
Assenagon Asset Management
144
Assenagon Asset Management
Luxembourg
$404K
Bank of Montreal
145
Bank of Montreal
Ontario, Canada
$394K
KK
146
KLP Kapitalforvaltning
Norway
$384K
GCM
147
Graham Capital Management
Connecticut
$380K
Verition Fund Management
148
Verition Fund Management
Connecticut
$369K
SPA
149
Sherbrooke Park Advisers
New York
$359K
Jane Street
150
Jane Street
New York
$351K