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Prothena Corp
PRTA

Overview Fund Activity

146 hedge funds and large institutions have $1B invested in Prothena Corp in 2021 Q1 according to their latest regulatory filings, with 22 funds opening new positions, 39 increasing their positions, 49 reducing their positions, and 13 closing their positions.

Holders
146
Holders Change
+6
Holders Change %
+4.29%
% of All Funds
2.57%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
22
Increased
39
Reduced
49
Closed
13
Calls
$16.5M
Puts
$5.57M
Net Calls
+$10.9M
Net Calls Change
+$8.89M

Top Buyers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$83.2M
2
RG
2
Redmile Group
California
$46.7M
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$78.3M
4
EC
4
EcoR1 Capital
California
$277M
5
FLAM
5
First Light Asset Management
Minnesota
$73.7M

Top Sellers

1
O
1
OrbiMed
New York
$0
2
IC
2
Ikarian Capital
Texas
$11M
3
Millennium Management
3
Millennium Management
New York
$577K
4
PM
4
Prosight Management
Texas
$15.1M
5
GPP
5
Great Point Partners
Connecticut
$0
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$277M 11,034,280 +1,607,640 +17%
BlackRock
2
BlackRock
New York
$90.2M 3,591,008 -101,962 -3%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$83.2M 3,312,346 +3,297,931 +22,878%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$78.3M 3,116,196 +1,633,835 +110%
FLAM
5
First Light Asset Management
Minnesota
$73.7M 2,935,707 +879,254 +43%
RG
6
Redmile Group
California
$46.7M 1,857,072 +1,857,072 New
PAI
7
Palo Alto Investors
California
$43.8M 1,742,505 +50,700 +3%
Dimensional Fund Advisors
8
Dimensional Fund Advisors
Texas
$39.8M 1,579,102 -158,867 -9%
State Street
9
State Street
Massachusetts
$30.3M 1,204,292 +594,142 +97%
RSCM
10
Rock Springs Capital Management
Maryland
$29.1M 1,156,900 +15,800 +1%
PM
11
Prosight Management
Texas
$15.1M 600,000 -491,202 -45%
Vanguard Group
12
Vanguard Group
Pennsylvania
$14.4M 571,676 -32,135 -5%
Goldman Sachs
13
Goldman Sachs
New York
$12.5M 495,631 +45,371 +10%
Geode Capital Management
14
Geode Capital Management
Massachusetts
$12.3M 491,581 +27,994 +6%
IC
15
Ikarian Capital
Texas
$11M 437,430 -749,270 -63%
Nuveen Asset Management
16
Nuveen Asset Management
Illinois
$9.37M 372,827 -1,423 -0.4%
UBS AM
17
UBS AM
Illinois
$8.86M 352,527 +316,420 +876%
Two Sigma Advisers
18
Two Sigma Advisers
New York
$8.71M 346,800 +170,600 +97%
Northern Trust
19
Northern Trust
Illinois
$8.57M 341,275 -28,885 -8%
Jacobs Levy Equity Management
20
Jacobs Levy Equity Management
New Jersey
$7.88M 313,851 -1,940 -0.6%
Two Sigma Investments
21
Two Sigma Investments
New York
$7.45M 296,378 +245,797 +486%
Renaissance Technologies
22
Renaissance Technologies
New York
$7.26M 289,000 -25,000 -8%
PA
23
Pinnacle Associates
New York
$7.02M 279,560 -29,420 -10%
Invesco
24
Invesco
Georgia
$5.74M 228,285 +197,641 +645%
Charles Schwab
25
Charles Schwab
California
$4.68M 186,391 +3,852 +2%
1
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