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Arrowhead Research
ARWR

Name Holding Trade Value Shares
Change 		Change in
Stake
O
101
OrbiMed
New York
– -$76.5M -5,178,200 Closed
Franklin Resources
102
Franklin Resources
California
– -$20.2M -1,370,800 Closed
PA
103
Perceptive Advisors
New York
– -$18.4M -1,247,495 Closed
VAM
104
Visium Asset Management
New York
– -$15.4M -1,041,286 Closed
JHIU
105
Janus Henderson Investors US
Colorado
– -$14M -945,983 Closed
CAM
106
Cormorant Asset Management
Massachusetts
– -$13.3M -900,000 Closed
Lord, Abbett & Co
107
Lord, Abbett & Co
New Jersey
– -$6.75M -456,687 Closed
FAM
108
Fred Alger Management
New York
– -$4.25M -287,749 Closed
DCM
109
Driehaus Capital Management
Illinois
– -$2.82M -190,762 Closed
Asset Management One
110
Asset Management One
Japan
– -$2.41M -160,303 Closed
TI
111
Turner Investments
Pennsylvania
– -$2.07M -139,940 Closed
Massachusetts Financial Services
112
Massachusetts Financial Services
Massachusetts
– -$2M -135,141 Closed
WSA
113
Wall Street Associates
California
– -$1.73M -117,387 Closed
RSCM
114
Rock Springs Capital Management
Maryland
– -$1.7M -115,000 Closed
EAM
115
Eventide Asset Management
Massachusetts
– -$1.69M -114,700 Closed
JG
116
Jefferies Group
New York
– -$1.64M -111,239 Closed
EI
117
EAM Investors
California
– -$1.4M -94,440 Closed
IHM
118
Iguana Healthcare Management
New York
– -$1.33M -90,000 Closed
RFC
119
Russell Frank Company
Washington
– -$1.13M -76,642 Closed
Stifel Financial
120
Stifel Financial
Missouri
– -$758K -51,300 Closed
JGC
121
J. Goldman & Co
New York
– -$591K -40,000 Closed
CSS
122
Cubist Systematic Strategies
Connecticut
– -$583K -39,491 Closed
WC
123
Woodstock Corp
Massachusetts
– -$486K -32,904 Closed
SM
124
Sabby Management
Florida
– -$451K -30,513 Closed
QIM
125
Quantitative Investment Management
Virginia
– -$392K -26,600 Closed
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