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Prothena Corp
PRTA

Overview Fund Activity

147 hedge funds and large institutions have $1.42B invested in Prothena Corp in 2015 Q3 according to their latest regulatory filings, with 20 funds opening new positions, 47 increasing their positions, 45 reducing their positions, and 11 closing their positions.

Holders
147
Holders Change
+9
Holders Change %
+6.52%
% of All Funds
4.11%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.06%
New
20
Increased
47
Reduced
45
Closed
11
Calls
$13.1M
Puts
$9.59M
Net Calls
+$3.55M
Net Calls Change
+$1.99M

Top Buyers

1
WIM
1
Woodford Investment Management
United Kingdom
$281M
2
Citadel Advisors
2
Citadel Advisors
Florida
$37.4M
3
BB
3
BB Biotech
Switzerland
$14.5M
4
Deutsche Bank
4
Deutsche Bank
Germany
$11.2M
5
Axa
5
Axa
France
$8.25M

Top Sellers

1
Westfield Capital Management
1
Westfield Capital Management
Massachusetts
$44.8M
2
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$141M
3
Marshall Wace
3
Marshall Wace
United Kingdom
$0
4
Millennium Management
4
Millennium Management
New York
$12.9M
5
CCI
5
Columbus Circle Investors
$7.25M
Name Market Value Shares Shares
Change 		Shares
Change %
WIM
1
Woodford Investment Management
United Kingdom
$281M 6,202,525 +675,000 +12%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$213M 4,702,797 +9,915 +0.2%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$141M 3,099,103 -376,093 -11%
Wellington Management Group
4
Wellington Management Group
Massachusetts
$114M 2,513,569 -13,474 -0.5%
Capital World Investors
5
Capital World Investors
California
$55.5M 1,223,114 – –
BFA
6
BlackRock Fund Advisors
California
$53.8M 1,187,018 +36,812 +3%
Westfield Capital Management
7
Westfield Capital Management
Massachusetts
$44.8M 987,979 -404,871 -29%
State Street
8
State Street
Massachusetts
$43.9M 968,805 -97,172 -9%
VAM
9
Visium Asset Management
New York
$43.5M 959,427 -37,460 -4%
Citadel Advisors
10
Citadel Advisors
Florida
$37.4M 824,450 +406,560 +97%
BIT
11
BlackRock Institutional Trust
California
$34.8M 767,650 +130,263 +20%
PAI
12
Palo Alto Investors
California
$31.6M 695,918 – –
Vanguard Group
13
Vanguard Group
Pennsylvania
$23.1M 509,392 +48,909 +11%
Northern Trust
14
Northern Trust
Illinois
$22.1M 488,340 +4,319 +0.9%
Jennison Associates
15
Jennison Associates
New York
$18.4M 404,765 +3,035 +0.8%
ORI
16
Oak Ridge Investments
Illinois
$17.1M 378,185 +114,919 +44%
Invesco
17
Invesco
Georgia
$16.5M 363,690 +72,045 +25%
BB
18
BB Biotech
Switzerland
$14.5M 320,000 +320,000 New
Millennium Management
19
Millennium Management
New York
$12.9M 283,922 -255,991 -47%
Norges Bank
20
Norges Bank
Norway
$11.7M 259,077 +69,813 +37%
RSCM
21
Rock Springs Capital Management
Maryland
$11.2M 248,000 -2,000 -0.8%
Deutsche Bank
22
Deutsche Bank
Germany
$11.2M 247,558 +180,645 +270%
GC
23
Guggenheim Capital
Illinois
$9.5M 209,591 +14,053 +7%
Geode Capital Management
24
Geode Capital Management
Massachusetts
$9.3M 205,060 +4,880 +2%
Axa
25
Axa
France
$8.25M 181,876 +130,714 +255%
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