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Prothena Corp
PRTA

Overview Fund Activity

156 hedge funds and large institutions have $2.08B invested in Prothena Corp in 2021 Q2 according to their latest regulatory filings, with 34 funds opening new positions, 50 increasing their positions, 39 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
156
Holders Change
+10
Holders Change %
+6.85%
% of All Funds
2.72%
Holding in Top 10
5
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+66.67%
% of All Funds
0.09%
New
34
Increased
50
Reduced
39
Closed
24
Calls
$16.2M
Puts
$8.25M
Net Calls
+$7.98M
Net Calls Change
-$2.95M

Top Buyers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$299M
2
EC
2
EcoR1 Capital
California
$580M
3
ACM
3
Atika Capital Management
New York
$12M
4
Adage Capital Partners
4
Adage Capital Partners
Massachusetts
$10.3M
5
APM
5
Avidity Partners Management
Texas
$9.36M

Top Sellers

1
FLAM
1
First Light Asset Management
Minnesota
$99.1M
2
RG
2
Redmile Group
California
$62.5M
3
Goldman Sachs
3
Goldman Sachs
New York
$3.77M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$143M
5
IC
5
Ikarian Capital
Texas
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
IC
151
Ikarian Capital
Texas
– -$11M -437,430 Closed
Jacobs Levy Equity Management
152
Jacobs Levy Equity Management
New Jersey
– -$7.88M -313,851 Closed
Hudson Bay Capital Management
153
Hudson Bay Capital Management
Connecticut
– -$1.76M -70,000 Closed
EP
154
Eversept Partners
New York
– -$1.72M -68,575 Closed
Acadian Asset Management
155
Acadian Asset Management
Massachusetts
– -$1.66M -66,043 Closed
Russell Investments Group
156
Russell Investments Group
United Kingdom
– -$1.63M -65,119 Closed
California Public Employees Retirement System
157
California Public Employees Retirement System
California
– -$1.57M -62,500 Closed
Citadel Advisors
158
Citadel Advisors
Florida
– -$1.41M -56,273 Closed
BFM
159
Boothbay Fund Management
New York
– -$1.21M -48,162 Closed
MWNA
160
Marshall Wace North America
New York
– -$769K -30,601 Closed
Walleye Trading
161
Walleye Trading
New York
– -$593K -23,587 Closed
Marshall Wace
162
Marshall Wace
United Kingdom
– -$591K -23,553 Closed
SM
163
SG3 Management
Puerto Rico
– -$565K -22,500 Closed
CM
164
Caption Management
Oklahoma
– -$528K -21,000 Closed
Ameriprise
165
Ameriprise
Minnesota
– -$447K -17,792 Closed
CAM
166
Connacht Asset Management
New York
– -$385K -15,313 Closed
Belvedere Trading
167
Belvedere Trading
Illinois
– -$366K -14,584 Closed
Natixis Advisors
168
Natixis Advisors
Massachusetts
– -$325K -12,972 Closed
MLICM
169
Metropolitan Life Insurance Company (MetLife)
New York
– -$240K -9,566 Closed
Group One Trading
170
Group One Trading
Illinois
– -$190K -7,550 Closed
QT
171
Quantbot Technologies
New York
– -$61K -2,451 Closed
Bank of Montreal
172
Bank of Montreal
Ontario, Canada
– -$54K -2,300 Closed
SWM
173
Spire Wealth Management
Virginia
– -$29K -1,068 Closed
Pacer Advisors
174
Pacer Advisors
Pennsylvania
– -$24K -952 Closed
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