PRTA icon

Prothena Corp
PRTA

Overview Fund Activity

185 hedge funds and large institutions have $253M invested in Prothena Corp in 2025 Q2 according to their latest regulatory filings, with 52 funds opening new positions, 53 increasing their positions, 41 reducing their positions, and 22 closing their positions.

Holders
185
Holders Change
+26
Holders Change %
+16.35%
% of All Funds
2.48%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
52
Increased
53
Reduced
41
Closed
22
Calls
$4.37M
Puts
$3.43M
Net Calls
+$940K
Net Calls Change
-$1.31M

Top Buyers

1
ACM
1
ADAR1 Capital Management
Texas
$20.5M
2
Citadel Advisors
2
Citadel Advisors
Florida
$6.97M
3
Acadian Asset Management
3
Acadian Asset Management
Massachusetts
$6.18M
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$13.2M
5
RC
5
Rangeley Capital
Connecticut
$4.34M

Top Sellers

1
EC
1
EcoR1 Capital
California
$0
2
Wellington Management Group
2
Wellington Management Group
Massachusetts
$655K
3
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$432K
4
SL
4
Siren LLC
Connecticut
$0
5
BCM
5
Boxer Capital Management
California
$0
Name Market Value Shares Shares
Change 		Shares
Change %
NRD
101
Nebula Research & Development
New York
$139K 22,857 +22,857 New
Ensign Peak Advisors
102
Ensign Peak Advisors
Utah
$131K 21,643 – –
Mirae Asset Global ETFs Holdings
103
Mirae Asset Global ETFs Holdings
Hong Kong
$129K 21,218 -6,116 -22%
Handelsbanken Fonder
104
Handelsbanken Fonder
Sweden
$127K 20,900 – –
MJRIC
105
Mogy Joel R Investment Counsel
California
$126K 20,750 +20,750 New
FWMM
106
Foundation Wealth Management (Missouri)
Missouri
$118K 19,471 – –
Connor, Clark & Lunn Investment Management (CC&L)
107
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$115K 18,896 -72,586 -79%
OC
108
Oppenheimer & Co
New York
$113K 18,595 +18,595 New
VIA
109
Virtus Investment Advisers
Connecticut
$113K 18,547 +6,656 +56%
VCM
110
Voleon Capital Management
California
$113K 18,536 +18,536 New
IIM
111
INTECH Investment Management
Florida
$112K 18,374 -15,001 -45%
JG
112
Jain Global
New York
$111K 18,262 +18,262 New
Janus Henderson Group
113
Janus Henderson Group
United Kingdom
$110K 18,047 – –
PNC Financial Services Group
114
PNC Financial Services Group
Pennsylvania
$109K 18,028 +17,540 +3,594%
Los Angeles Capital Management
115
Los Angeles Capital Management
California
$101K 16,702 +16,702 New
CPIG
116
Chicago Partners Investment Group
Illinois
$99.8K 14,759 +247 +2%
SO
117
STRS Ohio
Ohio
$99.5K 16,400 +16,400 New
Zurich Cantonal Bank
118
Zurich Cantonal Bank
Switzerland
$94.5K 15,568 -472 -3%
State Board of Administration of Florida Retirement System
119
State Board of Administration of Florida Retirement System
Florida
$93.4K 15,386 – –
SCM
120
Shelton Capital Management
Colorado
$92.7K 15,279 +46 +0.3%
Manulife (Manufacturers Life Insurance)
121
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$91.9K 15,140 -50,091 -77%
Jones Financial Companies
122
Jones Financial Companies
Missouri
$85.1K 14,000 +14,000 New
CC
123
Corton Capital
Ontario, Canada
$84.8K 13,964 +13,964 New
DekaBank Deutsche Girozentrale
124
DekaBank Deutsche Girozentrale
Germany
$84K 14,000 – –
Raymond James Financial
125
Raymond James Financial
Florida
$81.9K 13,496 +1,009 +8%
3 4
5
6 7