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Prothena Corp
PRTA

Overview Fund Activity

174 hedge funds and large institutions have $1.64B invested in Prothena Corp in 2022 Q1 according to their latest regulatory filings, with 18 funds opening new positions, 56 increasing their positions, 54 reducing their positions, and 37 closing their positions.

Holders
174
Holders Change
-22
Holders Change %
-11.22%
% of All Funds
2.75%
Holding in Top 10
5
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+25%
% of All Funds
0.08%
New
18
Increased
56
Reduced
54
Closed
37
Calls
$15.6M
Puts
$2.57M
Net Calls
+$13.1M
Net Calls Change
+$5.66M

Top Buyers

1
State Street
1
State Street
Massachusetts
$86.6M
2
MRCP
2
Maple Rock Capital Partners
Ontario, Canada
$12.2M
3
EC
3
EcoR1 Capital
California
$424M
4
PBA
4
Paradigm Biocapital Advisors
New York
$9.8M
5
Nuveen Asset Management
5
Nuveen Asset Management
Illinois
$27.3M

Top Sellers

1
Jacobs Levy Equity Management
1
Jacobs Levy Equity Management
New Jersey
$0
2
Marshall Wace
2
Marshall Wace
United Kingdom
$385K
3
Voloridge Investment Management
3
Voloridge Investment Management
Florida
$0
4
HIM
4
Hillsdale Investment Management
Ontario, Canada
$0
5
ECM
5
ExodusPoint Capital Management
New York
$2.59M
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$424M 11,584,280 +300,000 +3%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$224M 6,113,742 +164,881 +3%
BlackRock
3
BlackRock
New York
$141M 3,861,586 -10,714 -0.3%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$97.8M 2,675,614 +33,873 +1%
State Street
5
State Street
Massachusetts
$86.6M 2,367,583 +394,633 +20%
FLAM
6
First Light Asset Management
Minnesota
$67.2M 1,838,548 +215,607 +13%
PAI
7
Palo Alto Investors
California
$61.5M 1,681,477 -3,805 -0.2%
Dimensional Fund Advisors
8
Dimensional Fund Advisors
Texas
$55M 1,505,156 +6,619 +0.4%
Vanguard Group
9
Vanguard Group
Pennsylvania
$32M 875,300 -25,904 -3%
Nuveen Asset Management
10
Nuveen Asset Management
Illinois
$27.3M 723,989 +225,825 +45%
RG
11
Redmile Group
California
$26.9M 736,175 -29,500 -4%
RSCM
12
Rock Springs Capital Management
Maryland
$24.3M 663,530 +15,800 +2%
IBT
13
International Biotechnology Trust
United Kingdom
$23.8M 15,000 – –
Geode Capital Management
14
Geode Capital Management
Massachusetts
$23.8M 651,975 +28,401 +5%
PM
15
Prosight Management
Texas
$20.7M 566,538 +125,538 +28%
Two Sigma Advisers
16
Two Sigma Advisers
New York
$15.2M 416,200 +7,800 +2%
Renaissance Technologies
17
Renaissance Technologies
New York
$14.4M 394,200 +127,400 +48%
Northern Trust
18
Northern Trust
Illinois
$13.3M 364,792 -80,027 -18%
Morgan Stanley
19
Morgan Stanley
New York
$12.8M 349,521 +169,990 +95%
MRCP
20
Maple Rock Capital Partners
Ontario, Canada
$12.2M 334,000 +334,000 New
BC
21
Boxer Capital
California
$11M 300,000 – –
Charles Schwab
22
Charles Schwab
California
$10.4M 284,402 +28,788 +11%
Millennium Management
23
Millennium Management
New York
$9.97M 272,675 +52,784 +24%
PBA
24
Paradigm Biocapital Advisors
New York
$9.8M 267,946 +267,946 New
Two Sigma Investments
25
Two Sigma Investments
New York
$9.56M 261,291 -40,163 -13%
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