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Prothena Corp
PRTA

Overview Fund Activity

192 hedge funds and large institutions have $2.91B invested in Prothena Corp in 2021 Q3 according to their latest regulatory filings, with 50 funds opening new positions, 57 increasing their positions, 49 reducing their positions, and 13 closing their positions.

Holders
192
Holders Change
+36
Holders Change %
+23.08%
% of All Funds
3.37%
Holding in Top 10
5
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.09%
New
50
Increased
57
Reduced
49
Closed
13
Calls
$18.1M
Puts
$11.4M
Net Calls
+$6.73M
Net Calls Change
-$1.25M

Top Buyers

1
BC
1
Boxer Capital
California
$21.4M
2
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$432M
3
Vanguard Group
3
Vanguard Group
Pennsylvania
$61.9M
4
State Street
4
State Street
Massachusetts
$100M
5
SG Americas Securities
5
SG Americas Securities
New York
$8.27M

Top Sellers

1
FLAM
1
First Light Asset Management
Minnesota
$103M
2
RG
2
Redmile Group
California
$64.2M
3
RSCM
3
Rock Springs Capital Management
Maryland
$50.6M
4
APM
4
Avidity Partners Management
Texas
$0
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$189M
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$804M 11,284,280 – –
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$432M 6,062,629 +239,544 +4%
BlackRock
3
BlackRock
New York
$269M 3,769,704 +87,856 +2%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$189M 2,649,431 -128,856 -5%
PAI
5
Palo Alto Investors
California
$120M 1,685,282 -46,200 -3%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$113M 1,579,648 -5,713 -0.4%
FLAM
7
First Light Asset Management
Minnesota
$103M 1,449,494 -478,335 -25%
State Street
8
State Street
Massachusetts
$100M 1,405,244 +176,765 +14%
RG
9
Redmile Group
California
$64.2M 901,491 -314,166 -26%
Vanguard Group
10
Vanguard Group
Pennsylvania
$61.9M 868,478 +187,382 +28%
RSCM
11
Rock Springs Capital Management
Maryland
$50.6M 710,430 -239,661 -25%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$44.2M 620,173 +56,817 +10%
Nuveen Asset Management
13
Nuveen Asset Management
Illinois
$34.1M 479,395 +29,404 +7%
Two Sigma Advisers
14
Two Sigma Advisers
New York
$33.7M 473,700 +51,400 +12%
Northern Trust
15
Northern Trust
Illinois
$31.4M 440,985 -299 -0.1%
Invesco
16
Invesco
Georgia
$24.7M 347,424 +51,565 +17%
PM
17
Prosight Management
Texas
$23M 323,300 -98,700 -23%
Two Sigma Investments
18
Two Sigma Investments
New York
$22.9M 321,166 -15,824 -5%
BC
19
Boxer Capital
California
$21.4M 300,000 +300,000 New
UBS AM
20
UBS AM
Illinois
$19.9M 279,823 -122,345 -30%
Renaissance Technologies
21
Renaissance Technologies
New York
$18.3M 257,200 +18,900 +8%
Charles Schwab
22
Charles Schwab
California
$17.2M 241,715 +34,889 +17%
ACM
23
Atika Capital Management
New York
$16M 224,600 -9,400 -4%
Point72 Asset Management
24
Point72 Asset Management
Connecticut
$11.5M 161,900 -6,900 -4%
PA
25
Pinnacle Associates
New York
$10.8M 151,776 -54,142 -26%
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