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Prothena Corp
PRTA

Overview Fund Activity

138 hedge funds and large institutions have $1.62B invested in Prothena Corp in 2015 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 48 increasing their positions, 35 reducing their positions, and 10 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
138
Holders Change
+14
Holders Change %
+11.29%
% of All Funds
3.72%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.08%
New
25
Increased
48
Reduced
35
Closed
10
Calls
$12.2M
Puts
$10.6M
Net Calls
+$1.57M
Net Calls Change
+$6.55M

Top Buyers

1
WIM
1
Woodford Investment Management
United Kingdom
$291M
2
VAM
2
Visium Asset Management
New York
$52.5M
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$247M
4
Citadel Advisors
4
Citadel Advisors
Florida
$22M
5
CCI
5
Columbus Circle Investors
$14.8M

Top Sellers

1
Westfield Capital Management
1
Westfield Capital Management
Massachusetts
$73.4M
2
Millennium Management
2
Millennium Management
New York
$28.4M
3
Jennison Associates
3
Jennison Associates
New York
$21.2M
4
State Street
4
State Street
Massachusetts
$56.1M
5
TI
5
Turner Investments
Pennsylvania
$9.16M
Name Holding Trade Value Shares
Change 		Shares
Change %
OAC
76
OMERS Administration Corp
Ontario, Canada
$679K – – –
QIM
77
Quantitative Investment Management
Virginia
$679K +$679K +12,900 New
Public Employees Retirement Association of Colorado
78
Public Employees Retirement Association of Colorado
Colorado
$660K -$66K -1,252 -9%
Tudor Investment Corp
79
Tudor Investment Corp
Connecticut
$640K +$640K +12,142 New
Morgan Stanley
80
Morgan Stanley
New York
$546K -$83.9K -1,591 -13%
GGHC
81
Gilder Gagnon Howe & Co
New York
$491K +$491K +9,321 New
PPA
82
Parametric Portfolio Associates
Washington
$468K +$144K +2,729 +44%
Citigroup
83
Citigroup
New York
$395K -$95.6K -1,812 -19%
PNC Financial Services Group
84
PNC Financial Services Group
Pennsylvania
$391K -$116K -2,197 -23%
BG
85
BlackRock Group
United Kingdom
$374K -$73.4K -1,393 -16%
CPIG
86
Chicago Partners Investment Group
Illinois
$362K -$348K -6,600 -49%
FMT
87
First Mercantile Trust
Tennessee
$320K +$320K +6,068 New
TCM
88
Traynor Capital Management
Pennsylvania
$306K +$306K +5,828 New
NYLIM
89
New York Life Investment Management
New York
$302K +$12.5K +238 +4%
WC
90
Whitnell & Co
Illinois
$289K – – –
BNP Paribas Financial Markets
91
BNP Paribas Financial Markets
France
$278K +$104K +1,972 +60%
WMSA
92
Weiss Multi-Strategy Advisers
New York
$263K -$1.05M -20,000 -80%
Principal Financial Group
93
Principal Financial Group
Iowa
$248K +$248K +4,716 New
M&T Bank
94
M&T Bank
New York
$239K +$239K +4,528 New
GCP
95
GSA Capital Partners
United Kingdom
$225K +$225K +4,280 New
Simplex Trading
96
Simplex Trading
Illinois
$213K -$263K -5,005 -55%
Royal Bank of Canada
97
Royal Bank of Canada
Ontario, Canada
$208K -$749K -14,251 -78%
HFS
98
HL Financial Services
Kentucky
$208K +$208K +3,948 New
Barclays
99
Barclays
United Kingdom
$143K -$214K -4,110 -60%
PAM
100
Panagora Asset Management
Massachusetts
$123K -$162K -3,081 -57%
2 3
4
5 6