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Prothena Corp
PRTA

Overview Fund Activity

132 hedge funds and large institutions have $531M invested in Prothena Corp in 2014 Q2 according to their latest regulatory filings, with 39 funds opening new positions, 50 increasing their positions, 18 reducing their positions, and 25 closing their positions.

Holders
132
Holders Change
+14
Holders Change %
+11.86%
% of All Funds
3.8%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
39
Increased
50
Reduced
18
Closed
25
Calls
$6.8M
Puts
$5.51M
Net Calls
+$1.29M
Net Calls Change
+$1.8M

Top Buyers

1
Bank of America
1
Bank of America
North Carolina
$37.3M
2
Wellington Management Group
2
Wellington Management Group
Massachusetts
$53.3M
3
State Street
3
State Street
Massachusetts
$20.3M
4
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$66.2M
5
Westfield Capital Management
5
Westfield Capital Management
Massachusetts
$23.9M

Top Sellers

1
O
1
OrbiMed
New York
$0
2
RCM
2
RA Capital Management
Massachusetts
$0
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$62.1M
4
PHS
4
PFM Health Sciences
California
$0
5
CAM
5
Cormorant Asset Management
Massachusetts
$0
Name Market Value Shares Shares
Change 		Shares
Change %
SIM
51
Spark Investment Management
New York
$1.1M 48,800 -3,800 -7%
Two Sigma Advisers
52
Two Sigma Advisers
New York
$913K 40,500 +23,000 +131%
California State Teachers Retirement System (CalSTRS)
53
California State Teachers Retirement System (CalSTRS)
California
$902K 39,997 +14,200 +55%
GIM
54
Granahan Investment Management
Massachusetts
$764K 33,894 – –
Charles Schwab
55
Charles Schwab
California
$724K 32,100 +11,600 +57%
Tudor Investment Corp
56
Tudor Investment Corp
Connecticut
$689K 30,549 +30,549 New
ARTA
57
A.R.T. Advisors
New York
$650K 28,844 +1,285 +5%
Invesco
58
Invesco
Georgia
$628K 27,840 -90,750 -77%
Arrowstreet Capital
59
Arrowstreet Capital
Massachusetts
$617K 27,375 +27,375 New
RFC
60
Russell Frank Company
Washington
$606K 26,900 +22,745 +547%
AllianceBernstein
61
AllianceBernstein
Tennessee
$604K 26,800 +5,423 +25%
Capital Fund Management (CFM)
62
Capital Fund Management (CFM)
France
$593K 26,300 +26,300 New
BG
63
BlackRock Group
United Kingdom
$587K 26,044 +26,044 New
RhumbLine Advisers
64
RhumbLine Advisers
Massachusetts
$552K 24,461 +7,683 +46%
ProShare Advisors
65
ProShare Advisors
Maryland
$538K 23,878 -7,255 -23%
Group One Trading
66
Group One Trading
Illinois
$538K 23,858 +5,602 +31%
SO
67
STRS Ohio
Ohio
$515K 22,849 +1,500 +7%
California Public Employees Retirement System
68
California Public Employees Retirement System
California
$510K 22,600 -5,110 -18%
AI
69
Analytic Investors
California
$480K 21,303 -3,175 -13%
DM
70
Deerfield Management
New York
$451K 20,000 +20,000 New
BA
71
BlackRock Advisors
Delaware
$406K 18,005 +10,559 +142%
EMG
72
Ellington Management Group
Connecticut
$406K 18,000 +18,000 New
CAM
73
ClariVest Asset Management
California
$401K 17,736 +17,736 New
AL
74
Airain Ltd
Guernsey
$395K 17,509 +17,509 New
MLICM
75
Metropolitan Life Insurance Company (MetLife)
New York
$388K 17,383 +6,670 +62%
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