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Arrowhead Research

Name Holding Trade Value Shares
Change
Change in
Stake
RI
1
RTW Investments
New York
$113M +$50.3M +5,382,981 +185%
O
2
OppenheimerFunds
New York
$106M +$22.4K +2,395 +0%
BlackRock
3
BlackRock
New York
$96.3M +$34.4M +3,679,986 +108%
First Manhattan
4
First Manhattan
New York
$61.6M
State Street
5
State Street
Massachusetts
$54.8M +$13.8M +1,478,425 +58%
Vanguard Group
6
Vanguard Group
Pennsylvania
$53.6M +$4.74M +506,996 +15%
VC
7
Vivo Capital
California
$25.8M
Adage Capital Partners
8
Adage Capital Partners
Massachusetts
$20.4M
Northern Trust
9
Northern Trust
Illinois
$14.5M +$7.87M +841,982 +380%
ACP
10
Acuta Capital Partners
California
$14M -$6.84M -731,876 -42%
Invesco
11
Invesco
Georgia
$13.4M +$9.21M +984,963 New
Geode Capital Management
12
Geode Capital Management
Massachusetts
$11.9M +$2.27M +243,281 +39%
UIC
13
Uniplan Investment Counsel
Wisconsin
$10.3M +$308K +32,909 +5%
GTC
14
Ghost Tree Capital
New York
$9.52M -$935K -100,000 -13%
Citadel Advisors
15
Citadel Advisors
Florida
$8.17M +$5.38M +575,955 +2,300%
Charles Schwab
16
Charles Schwab
California
$6.23M +$1.73M +184,849 +68%
ACA
17
Avoro Capital Advisors
New York
$6.12M +$4.21M +450,000 New
PA
18
Perceptive Advisors
New York
$4.97M
Bank of New York Mellon
19
Bank of New York Mellon
New York
$4.63M +$2.46M +263,205 +342%
Morgan Stanley
20
Morgan Stanley
New York
$3.84M +$937K +100,258 +55%
California Public Employees Retirement System
21
California Public Employees Retirement System
California
$3.16M -$17.6K -1,878 -0.8%
Deutsche Bank
22
Deutsche Bank
Germany
$3.09M -$90.5K -9,677 -4%
TCIM
23
TIAA CREF Investment Management
New York
$2.6M +$1.78M +190,952 New
Two Sigma Investments
24
Two Sigma Investments
New York
$2.56M +$1.76M +188,364 New
ARTA
25
A.R.T. Advisors
New York
$2.4M +$708K +75,700 +75%