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Prothena Corp
PRTA

Overview Fund Activity

186 hedge funds and large institutions have $2.56B invested in Prothena Corp in 2023 Q3 according to their latest regulatory filings, with 25 funds opening new positions, 73 increasing their positions, 51 reducing their positions, and 32 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
186
Holders Change
-10
Holders Change %
-5.1%
% of All Funds
2.97%
Holding in Top 10
5
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-16.67%
% of All Funds
0.08%
New
25
Increased
73
Reduced
51
Closed
32
Calls
$9.61M
Puts
$18.1M
Net Calls
-$8.45M
Net Calls Change
+$2.75M

Top Buyers

1
BC
1
Boxer Capital
California
$30.2M
2
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$184M
3
State Street
3
State Street
Massachusetts
$102M
4
Millennium Management
4
Millennium Management
New York
$12.8M
5
Janus Henderson Group
5
Janus Henderson Group
United Kingdom
$88.1M

Top Sellers

1
Man Group
1
Man Group
United Kingdom
$230K
2
APM
2
Avidity Partners Management
Texas
$18.4M
3
RSCM
3
Rock Springs Capital Management
Maryland
$29.6M
4
ACM
4
Atika Capital Management
New York
$0
5
EGI
5
EAM Global Investors
California
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
Morgan Stanley
26
Morgan Stanley
New York
$13M +$5.61M +116,265 +76%
UBS AM
27
UBS AM
Illinois
$12.8M +$1.92M +39,845 +18%
Millennium Management
28
Millennium Management
New York
$12.8M +$11.2M +232,425 +702%
Renaissance Technologies
29
Renaissance Technologies
New York
$12.6M -$3.05M -63,200 -20%
Goldman Sachs
30
Goldman Sachs
New York
$12.1M +$2.78M +57,688 +30%
MRCP
31
Maple Rock Capital Partners
Ontario, Canada
$11.3M – – –
Point72 Asset Management
32
Point72 Asset Management
Connecticut
$10.6M +$39.6K +821 +0.4%
Two Sigma Advisers
33
Two Sigma Advisers
New York
$9.83M -$3.02M -62,500 -23%
TD Asset Management
34
TD Asset Management
Ontario, Canada
$8.33M +$4.02M +83,269 +93%
SAM
35
Sectoral Asset Management
Quebec, Canada
$8.32M +$992K +20,559 +14%
BC
36
Birchview Capital
Vermont
$8.18M +$650K +13,463 +9%
Mariner
37
Mariner
Kansas
$8.1M +$1.59M +32,870 +24%
PA
38
Perceptive Advisors
New York
$7.99M -$917K -19,000 -10%
Amundi
39
Amundi
France
$7.78M +$2.99M +67,721 +62%
Rafferty Asset Management
40
Rafferty Asset Management
New York
$7.57M +$1.8M +37,262 +31%
Citadel Advisors
41
Citadel Advisors
Florida
$7.19M +$6.2M +128,493 +629%
Two Sigma Investments
42
Two Sigma Investments
New York
$6.57M -$1.28M -26,530 -16%
FLSM
43
Frazier Life Sciences Management
California
$6.17M – – –
Connor, Clark & Lunn Investment Management (CC&L)
44
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$6.17M +$851K +17,639 +16%
Ensign Peak Advisors
45
Ensign Peak Advisors
Utah
$6.09M – – –
PM
46
Prosight Management
Texas
$6.09M +$299K +6,202 +5%
PA
47
Pinnacle Associates
New York
$6.03M -$263K -5,453 -4%
Axa
48
Axa
France
$5.45M -$19.4K -403 -0.4%
Bank of America
49
Bank of America
North Carolina
$5.28M -$2.39M -49,439 -31%
BNP Paribas Financial Markets
50
BNP Paribas Financial Markets
France
$5.08M +$3.76M +78,009 +287%
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