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Prothena Corp
PRTA

Overview Fund Activity

196 hedge funds and large institutions have $3.54B invested in Prothena Corp in 2023 Q2 according to their latest regulatory filings, with 31 funds opening new positions, 72 increasing their positions, 58 reducing their positions, and 26 closing their positions.

Holders
196
Holders Change
+5
Holders Change %
+2.62%
% of All Funds
3.09%
Holding in Top 10
6
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-14.29%
% of All Funds
0.09%
New
31
Increased
72
Reduced
58
Closed
26
Calls
$19.7M
Puts
$30.9M
Net Calls
-$11.2M
Net Calls Change
-$15.4M

Top Buyers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$540M
2
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$243M
3
Bank of New York Mellon
3
Bank of New York Mellon
New York
$35.1M
4
Man Group
4
Man Group
United Kingdom
$11.6M
5
Amundi
5
Amundi
France
$7.48M

Top Sellers

1
APM
1
Avidity Partners Management
Texas
$36.5M
2
Bank of America
2
Bank of America
North Carolina
$10.8M
3
PM
3
Prosight Management
Texas
$8.19M
4
State Street
4
State Street
Massachusetts
$128M
5
Two Sigma Investments
5
Two Sigma Investments
New York
$11.1M
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$791M 11,584,280 – –
Fidelity Investments
2
Fidelity Investments
Massachusetts
$540M 7,912,766 +1,150,741 +17%
BlackRock
3
BlackRock
New York
$247M 3,611,254 -13,373 -0.4%
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$243M 3,553,768 +351,475 +11%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$151M 2,211,222 -54,856 -2%
State Street
6
State Street
Massachusetts
$128M 1,873,678 -228,780 -11%
Janus Henderson Group
7
Janus Henderson Group
United Kingdom
$114M 1,672,531 +76,228 +5%
PAI
8
Palo Alto Investors
California
$113M 1,657,458 -6,319 -0.4%
FLAM
9
First Light Asset Management
Minnesota
$102M 1,500,129 -11,039 -0.7%
Dimensional Fund Advisors
10
Dimensional Fund Advisors
Texas
$78.5M 1,150,208 -82,427 -7%
Vanguard Group
11
Vanguard Group
Pennsylvania
$71.1M 1,040,681 +96,125 +10%
T. Rowe Price Investment Management
12
T. Rowe Price Investment Management
Maryland
$59.8M 876,170 -38,513 -4%
Geode Capital Management
13
Geode Capital Management
Massachusetts
$57.2M 838,421 +58,597 +8%
PHS
14
PFM Health Sciences
California
$52.9M 774,546 – –
RSCM
15
Rock Springs Capital Management
Maryland
$51.4M 753,462 – –
APM
16
Avidity Partners Management
Texas
$36.5M 535,000 -533,200 -50%
Bank of New York Mellon
17
Bank of New York Mellon
New York
$35.1M 514,233 +350,141 +213%
EAM
18
Eventide Asset Management
Massachusetts
$30.4M 445,155 +6,423 +1%
Nuveen Asset Management
19
Nuveen Asset Management
Illinois
$30.2M 443,016 -63,712 -13%
JPMorgan Chase & Co
20
JPMorgan Chase & Co
New York
$28.3M 414,065 +86,347 +26%
Northern Trust
21
Northern Trust
Illinois
$28.1M 411,975 +29,287 +8%
Renaissance Technologies
22
Renaissance Technologies
New York
$22.1M 323,800 -83,500 -21%
FC
23
Finepoint Capital
Massachusetts
$21.7M 317,300 -14,300 -4%
Charles Schwab
24
Charles Schwab
California
$21.3M 312,483 +13,512 +5%
BC
25
Boxer Capital
California
$20.5M 300,000 – –
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