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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.

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 Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$580M 11,284,280 +250,000 +2%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$299M 5,823,085 +2,510,739 +76%
BlackRock
3
BlackRock
New York
$189M 3,681,848 +90,840 +3%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$143M 2,778,287 -337,909 -11%
FLAM
5
First Light Asset Management
Minnesota
$99.1M 1,927,829 -1,007,878 -34%
PAI
6
Palo Alto Investors
California
$89M 1,731,482 -11,023 -0.6%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$81.5M 1,585,361 +6,259 +0.4%
State Street
8
State Street
Massachusetts
$63.2M 1,228,479 +24,187 +2%
RG
9
Redmile Group
California
$62.5M 1,215,657 -641,415 -35%
RSCM
10
Rock Springs Capital Management
Maryland
$48.8M 950,091 -206,809 -18%
Vanguard Group
11
Vanguard Group
Pennsylvania
$35M 681,096 +109,420 +19%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$29M 563,356 +71,775 +15%
Nuveen Asset Management
13
Nuveen Asset Management
Illinois
$23.1M 449,991 +77,164 +21%
Northern Trust
14
Northern Trust
Illinois
$22.7M 441,284 +100,009 +29%
Two Sigma Advisers
15
Two Sigma Advisers
New York
$21.7M 422,300 +75,500 +22%
PM
16
Prosight Management
Texas
$21.7M 422,000 -178,000 -30%
UBS AM
17
UBS AM
Illinois
$20.7M 402,168 +49,641 +14%
Two Sigma Investments
18
Two Sigma Investments
New York
$17.3M 336,990 +40,612 +14%
Invesco
19
Invesco
Georgia
$15.2M 295,859 +67,574 +30%
Renaissance Technologies
20
Renaissance Technologies
New York
$12.3M 238,300 -50,700 -18%
ACM
21
Atika Capital Management
New York
$12M 234,000 +216,094 +1,207%
Charles Schwab
22
Charles Schwab
California
$10.6M 206,826 +20,435 +11%
PA
23
Pinnacle Associates
New York
$10.6M 205,918 -73,642 -26%
Adage Capital Partners
24
Adage Capital Partners
Massachusetts
$10.3M 200,000 +200,000 New
APM
25
Avidity Partners Management
Texas
$9.36M 182,000 +182,000 New
1
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