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Prothena Corp
PRTA

Overview Fund Activity

107 hedge funds and large institutions have $429M invested in Prothena Corp in 2013 Q4 according to their latest regulatory filings, with 31 funds opening new positions, 35 increasing their positions, 18 reducing their positions, and 12 closing their positions.

Holders
107
Holders Change
+19
Holders Change %
+21.59%
% of All Funds
3.11%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.06%
New
31
Increased
35
Reduced
18
Closed
12
Calls
$2.4M
Puts
$619K
Net Calls
+$1.78M
Net Calls Change
+$1.7M

Top Buyers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$38.6M
2
O
2
OrbiMed
New York
$31.9M
3
Westfield Capital Management
3
Westfield Capital Management
Massachusetts
$24.9M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$73M
5
DM
5
Deerfield Management
New York
$14M

Top Sellers

1
Norges Bank
1
Norges Bank
Norway
$6.9M
2
Morgan Stanley
2
Morgan Stanley
New York
$197K
3
Adage Capital Partners
3
Adage Capital Partners
Massachusetts
$25.6M
4
BBA
4
Baker Bros. Advisors
New York
$8.94M
5
Deutsche Bank
5
Deutsche Bank
Germany
$417K
Name Market Value Shares Shares
Change 		Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$73M 2,753,292 +808,732 +42%
RCM
2
RA Capital Management
Massachusetts
$43.5M 1,641,167 -5,232 -0.3%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$38.6M 1,456,806 +1,259,022 +637%
Wellington Management Group
4
Wellington Management Group
Massachusetts
$37.6M 1,419,643 +305,861 +27%
O
5
OrbiMed
New York
$31.9M 1,202,000 +1,202,000 New
Adage Capital Partners
6
Adage Capital Partners
Massachusetts
$25.6M 965,943 -51,072 -5%
Westfield Capital Management
7
Westfield Capital Management
Massachusetts
$24.9M 939,780 +939,780 New
Jennison Associates
8
Jennison Associates
New York
$22.1M 833,855 +341,761 +69%
BFA
9
BlackRock Fund Advisors
California
$17.1M 645,126 +304,232 +89%
PAI
10
Palo Alto Investors
California
$14.3M 537,418 +448,918 +507%
DM
11
Deerfield Management
New York
$14M 528,705 +528,705 New
BBA
12
Baker Bros. Advisors
New York
$8.94M 336,918 -32,732 -9%
Norges Bank
13
Norges Bank
Norway
$6.9M 260,300 -89,712 -26%
GC
14
Guggenheim Capital
Illinois
$6.67M 251,345 +251,345 New
Northern Trust
15
Northern Trust
Illinois
$5.24M 197,770 +44,065 +29%
State Street
16
State Street
Massachusetts
$5.17M 195,079 +43,073 +28%
Millennium Management
17
Millennium Management
New York
$5.01M 188,767 +117,379 +164%
Vanguard Group
18
Vanguard Group
Pennsylvania
$4.46M 168,270 +49,036 +41%
BIT
19
BlackRock Institutional Trust
California
$4.41M 166,093 +7,079 +4%
GTC
20
Ghost Tree Capital
New York
$3.45M 130,000 +130,000 New
Goldman Sachs
21
Goldman Sachs
New York
$2.58M 97,104 +97,104 New
Geode Capital Management
22
Geode Capital Management
Massachusetts
$2.42M 91,067 +31,734 +53%
Invesco
23
Invesco
Georgia
$2.31M 86,916 +16,743 +24%
TC
24
TFS Capital
Pennsylvania
$2.06M 77,602 -4,429 -5%
WMSA
25
Weiss Multi-Strategy Advisers
New York
$1.99M 75,000 +32,000 +74%
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