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Arrowhead Research

396 hedge funds and large institutions have $7.7B invested in Arrowhead Research in 2025 Q4 according to their latest regulatory filings, with 124 funds opening new positions, 125 increasing their positions, 109 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

15% more repeat investments, than reductions

Existing positions increased: 125 | Existing positions reduced: 109

14% more funds holding in top 10

Funds holding in top 10: 78 (+1)

5.1% more ownership

Funds ownership: 80.3%85.4% (+5.1%)

Holders
396
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
8
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$148M
Puts
$38.8M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
HighTower Advisors
76
HighTower Advisors
Illinois
$8.85M
Marshall Wace
77
Marshall Wace
United Kingdom
$8.22M
Russell Investments Group
78
Russell Investments Group
United Kingdom
$8.11M
Canada Life
79
Canada Life
Manitoba, Canada
$7.88M
California State Teachers Retirement System (CalSTRS)
80
California State Teachers Retirement System (CalSTRS)
California
$7.86M
SEI Investments
81
SEI Investments
Pennsylvania
$7.45M
WAM
82
Weiss Asset Management
Massachusetts
$7.39M
Franklin Resources
83
Franklin Resources
California
$7.13M
EHC
84
Everett Harris & Co
California
$6.97M
Neuberger Berman Group
85
Neuberger Berman Group
New York
$6.66M
LPL Financial
86
LPL Financial
California
$6.66M
IHAM
87
Integral Health Asset Management
New York
$6.64M
Manulife (Manufacturers Life Insurance)
88
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$6.55M
TAM
89
TFG Asset Management
Cayman Islands
$6.44M
Thrivent Financial for Lutherans
90
Thrivent Financial for Lutherans
Minnesota
$6.31M
Victory Capital Management
91
Victory Capital Management
Texas
$6.15M
PIM
92
Platinum Investment Management
Australia
$5.94M
Rafferty Asset Management
93
Rafferty Asset Management
New York
$5.61M
ACM
94
Aquatic Capital Management
Illinois
$5.37M
State of Wisconsin Investment Board
95
State of Wisconsin Investment Board
Wisconsin
$5.26M
EAM
96
Erste Asset Management
Austria
$5.08M
PIA
97
Pinion Investment Advisors
Kansas
$4.98M
ACM
98
ACT Capital Management
Pennsylvania
$4.98M
Creative Planning
99
Creative Planning
Kansas
$4.94M
MIM
100
MetLife Investment Management
New Jersey
$4.85M