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Prothena Corp
PRTA

Overview Fund Activity

140 hedge funds and large institutions have $418M invested in Prothena Corp in 2020 Q4 according to their latest regulatory filings, with 25 funds opening new positions, 24 increasing their positions, 52 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
140
Holders Change
–
Holders Change %
0%
% of All Funds
2.48%
Holding in Top 10
3
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+200%
% of All Funds
0.05%
New
25
Increased
24
Reduced
52
Closed
24
Calls
$3.93M
Puts
$1.88M
Net Calls
+$2.04M
Net Calls Change
+$2.49M

Top Buyers

1
FLAM
First Light Asset Management
Minnesota
$24.7M
2
IC
Ikarian Capital
Texas
$14.3M
3
PM
Prosight Management
Texas
$13.1M
4
PAI
Palo Alto Investors
California
$20.3M
5
BFM
Boothbay Fund Management
New York
$1.5M

Top Sellers

1
O
OrbiMed
New York
$21.6M
2
State Street
State Street
Massachusetts
$7.33M
3
GPP
Great Point Partners
Connecticut
$11.7M
4
Fidelity Investments
Fidelity Investments
Massachusetts
$17.8M
5
Wellington Management Group
Wellington Management Group
Massachusetts
$2.7M
Name Holding Trade Value Shares
Change 		Shares
Change %
WEC
126
Winslow Evans & Crocker
Massachusetts
$1K +$1K +100 New
RE
127
RBC Europe
United Kingdom
$348 – – –
AIG
128
American International Group
New York
$215 -$6 -514 -3%
APA
129
American Portfolios Advisors
New York
$24 – – –
AG
130
Artal Group
Luxembourg
– -$3.51M -351,500 Closed
Hudson Bay Capital Management
131
Hudson Bay Capital Management
Connecticut
– -$2.25M -225,000 Closed
TCM
132
Tang Capital Management
California
– -$1.79M -178,688 Closed
WP
133
Woodline Partners
California
– -$1.77M -177,084 Closed
Susquehanna International Group
134
Susquehanna International Group
Pennsylvania
– -$481K -48,145 Closed
TI
135
Trexquant Investment
Connecticut
– -$470K -47,039 Closed
MAM
136
Martingale Asset Management
Massachusetts
– -$446K -44,635 Closed
HS
137
HighVista Strategies
Massachusetts
– -$444K -44,414 Closed
Parallax Volatility Advisers
138
Parallax Volatility Advisers
California
– -$279K -27,965 Closed
Jane Street
139
Jane Street
New York
– -$236K -23,592 Closed
CSS
140
Cubist Systematic Strategies
Connecticut
– -$235K -23,519 Closed
Rafferty Asset Management
141
Rafferty Asset Management
New York
– -$230K -23,019 Closed
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
142
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
– -$187K -18,700 Closed
Verition Fund Management
143
Verition Fund Management
Connecticut
– -$171K -17,109 Closed
Tudor Investment Corp
144
Tudor Investment Corp
Connecticut
– -$146K -14,653 Closed
MC
145
Moors & Cabot
Massachusetts
– -$143K -14,350 Closed
Qube Research & Technologies (QRT)
146
Qube Research & Technologies (QRT)
United Kingdom
– -$142K -14,246 Closed
AIM
147
Aigen Investment Management
New York
– -$131K -13,157 Closed
Nisa Investment Advisors
148
Nisa Investment Advisors
Missouri
– -$6K -575 Closed
QCG
149
Quadrant Capital Group
Ohio
– -$1K -105 Closed
PMFA
150
Plante Moran Financial Advisors
Michigan
– -$1K -100 Closed
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