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PRTA
PROTHENA CORP PLC
$78.89
$2.83 (3.72%)
Last Close: 2021-09-23
Add to My Stocks
PRTA36.84% above Q2 High
$31.2 
Q2 Avg
$78.89 last close
PRTA
$21.63
$78.89
04-01
06-30
09-23
$21.63 Q2 Low
$57.65 Q2 High
$78.89 last close
HedgeMind 
Core Managers
391
HedgeMind 
Hedge Funds
Institutional
 Investors
PRTA – Stock Holders
All
10
17,994,139 SH
New Buy
4
650,800 SH
Increased
2
11,518,280 SH
Unchanged
0
0 SH
Decreased
4
5,825,059 SH
Sold Out
2
943,435 SH
High Conviction
3
14,943,591 SH
Sort by
Fund Manager
Company Name
Portfolio Weight
# of Shares
Shares Change
Change Rate
Oleg Nodelman
ECOR1 CAPITAL LLC
11,284,280 SH
+250,000 SH
21.7% P.W.
2.22% new
Matt Arens
FIRST LIGHT ASSET MANAGEMENT LLC
1,927,829 SH
-1,007,878 SH
5.95% P.W.
34.33% sold
William Edwards
PALO ALTO INVESTORS LLC
1,731,482 SH
-11,023 SH
4.91% P.W.
0.63% sold
Jeremy Green
REDMILE GROUP LLC
1,215,657 SH
-641,415 SH
0.92% P.W.
34.54% sold
Kris Jenner
ROCK SPRINGS CAPITAL MANAGEMENT LP
950,091 SH
-206,809 SH
0.97% P.W.
17.88% sold
Brad Farber
ATIKA CAPITAL MANAGEMENT LLC
234,000 SH
+216,094 SH
0.95% P.W.
92.35% new
Phill Gross
ADAGE CAPITAL PARTNERS GP LLC
200,000 SH
+200,000 SH
0.02% P.W.
100% new
David Witzke
AVIDITY PARTNERS MANAGEMENT LP
182,000 SH
+182,000 SH
0.25% P.W.
100% new
Steve Cohen
POINT72 ASSET MANAGEMENT LP
168,800 SH
+168,800 SH
0.04% P.W.
100% new
Joseph Edelman
PERCEPTIVE ADVISORS LLC
100,000 SH
+100,000 SH
0.07% P.W.
100% new
Kamran Moghtaderi
EVERSEPT PARTNERS LLC
0 SH
-68,575 SH
<0.01% P.W.
100% sold
Tristan Shahrestani
IKARIAN CAPITAL LLC
0 SH
-874,860 SH
<0.01% P.W.
100% sold
PRTA – Option Holders
CALL
Oleg Nodelman
ECOR1 CAPITAL LLC
0 SH
-250,000 SH
<0.01% P.W.
100% sold
5%+ Shareholders
13D-G Filings Since 2021-01-01
FIRST LIGHT ASSET MANAGEMENT LLC
Matt Arens
PRTA
2,929,340 SH
7.34% Ownership
16:44:05
2021-02-16
GREAT POINT PARTNERS LLC
Jeffrey Jay
PRTA
977,647 SH
2.45% Ownership
16:13:49
2021-02-16
ORBIMED ADVISORS LLC
Sven Borho
PRTA
1,485,458 SH
3.72% Ownership
17:07:21
2021-02-12
Core Consensus Ratings
2021-06-30 to 2021-09-23
Neutral
HedgeMind Stock Rating
88
Popularity Rank
HedgeMind Sentiment
50%
50%
33
50
19Q1
33
33
Q2
67
33
Q3
44
33
Q4
33
33
20Q1
50
30
Q2
40
40
Q3
45
45
Q4
55
45
21Q1
50
50
Q2
Q3
Q4
PRTA
$6.89
$78.89
21.29
35.69
50.09
64.49
Key Stats
2021-06-302021-09-23
21Q2Q/Q Change
Total # of Holders 10 +2
Holders % of Core Managers 2.56% +0.53 pp
Total Shares Held 17.99M -1.69M
Share Inflows 1.12M -3.31M
Share Outflows 2.81M -536.14K
PUT/CALL Ration/a 
Shares In PUT0.00 
Shares In CALL0.00 
Holders % of Core Managers
19Q1
Q2
Q3
Q4
20Q1
Q2
Q3
Q4
21Q1
Q2
Q3
Q4
$6.89
$78.89
30.89
54.89
1%
2%
PRTA
3%
Shares Held by Core Managers
19Q1
Q2
Q3
Q4
20Q1
Q2
Q3
Q4
21Q1
Q2
Q3
Q4
$6.89
$78.89
24.89
42.89
60.89
5.00M
10.00M
15.00M
PRTA
20.00M
Share & Money Flows
19Q1
Q2
Q3
Q4
20Q1
Q2
Q3
Q4
21Q1
Q2
Q3
Q4
$6.89
$78.89
18.89
30.89
42.89
54.89
66.89
-2.50M
0.00
2.50M
5.00M
7.50M
PRTA
10.00M
Share Inflows
Share Outflows
19Q1
Q2
Q3
Q4
20Q1
Q2
Q3
Q4
21Q1
Q2
Q3
Q4
$6.89
$78.89
15.89
24.89
33.89
42.89
51.89
60.89
69.89
-75.00M
-50.00M
-25.00M
0.00
25.00M
50.00M
75.00M
PRTA
$100.00M
Money Inflows
Money Outflows
Key Terms
HedgeMind Core Managers
HedgeMind Core Managers represents 300+ of HedgeMind Hedge Funds that we believe are most valuable for investors to follow and invest alongside. They are hedge fund managers who select investments based on fundamental analysis, construct conviction-weighted portfolio, and maintain a long-term investment strategy.
HedgeMind Hedge Funds
HedgeMind Hedge Funds consists of 440+ hedge funds that HedgeMind meticulously analyzed and selected from 4,400+ institutional investors. They represent some of the most successful hedge funds in the world.
HedgeMind Sentiment
HedgeMind Sentiment measures the percentage of HedgeMind Hedge Funds whose managers expressed bullish (buying), bearish (selling), and neutral views on the stock through factors including trading activities, position weight, and relative size of changes. It is calculated on quarterly basis.
HedgeMind Stock Rating
HedgeMind Stock Rating combines all HedgeMind'ss key metrics and indicators including HedgeMind Sentiment, changes in shares held by hedge funds and number of holders, and trends of these analytic metrics to rate stock as Accumulate, Neutral, and Reduce. Investors can use HedgeMind Stock Rating as your starting point to search for stocks to buy or sell and further perform your own due diligence.
High-Conviction Holders
High-Conviction Holders are hedge funds that hold a stock as a top 10 holding in their portfolios.
Institutional Investors
Institutional Investors include all hedge funds, mutual funds, pension funds, endowment funds, and other institutions that must report US exchanged equity holdings on Form 13F with SEC.
Money Inflows
Money Inflows represents the total amount of new money that a hedge fund invested to buy stocks in the latest filing period.
Money Outflows
Money Outflows represents the total amount of money that a hedge fund cashed out by selling stocks in the latest filing period.
Put/Call Ratio
(Put Options Held by Hedge Funds) / (Call Options Held by Hedge Funds). It can be used to gauge overall sentiment of hedge funds regarding a particular stock expressed through their option holdings.
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