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Prothena Corp
PRTA

Overview Fund Activity

107 hedge funds and large institutions have $429M invested in Prothena Corp in 2013 Q4 according to their latest regulatory filings, with 31 funds opening new positions, 35 increasing their positions, 18 reducing their positions, and 12 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
107
Holders Change
+19
Holders Change %
+21.59%
% of All Funds
3.11%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.06%
New
31
Increased
35
Reduced
18
Closed
12
Calls
$2.4M
Puts
$619K
Net Calls
+$1.78M
Net Calls Change
+$1.7M

Top Buyers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$38.6M
2
O
2
OrbiMed
New York
$31.9M
3
Westfield Capital Management
3
Westfield Capital Management
Massachusetts
$24.9M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$73M
5
DM
5
Deerfield Management
New York
$14M

Top Sellers

1
Norges Bank
1
Norges Bank
Norway
$6.9M
2
Morgan Stanley
2
Morgan Stanley
New York
$197K
3
Adage Capital Partners
3
Adage Capital Partners
Massachusetts
$25.6M
4
BBA
4
Baker Bros. Advisors
New York
$8.94M
5
Deutsche Bank
5
Deutsche Bank
Germany
$417K
Name Holding Trade Value Shares
Change 		Shares
Change %
Bank of New York Mellon
26
Bank of New York Mellon
New York
$1.91M +$480K +18,104 +34%
TCIM
27
TIAA CREF Investment Management
New York
$1.76M +$230K +8,670 +15%
Renaissance Technologies
28
Renaissance Technologies
New York
$1.71M +$1.71M +64,600 New
SFM
29
Sphera Funds Management
Israel
$1.33M +$1.33M +50,000 New
BIM
30
BlackRock Investment Management
Delaware
$1.27M +$178K +6,702 +16%
SIM
31
Spark Investment Management
New York
$1.11M – – –
ACM
32
Atika Capital Management
New York
$995K +$995K +37,500 New
Arrowstreet Capital
33
Arrowstreet Capital
Massachusetts
$940K +$940K +35,446 New
GIM
34
Granahan Investment Management
Massachusetts
$899K – – –
Susquehanna International Group
35
Susquehanna International Group
Pennsylvania
$883K +$331K +12,502 +60%
California State Teachers Retirement System (CalSTRS)
36
California State Teachers Retirement System (CalSTRS)
California
$684K +$119K +4,500 +21%
BIM
37
Bogle Investment Management
Massachusetts
$611K +$611K +23,047 New
SO
38
STRS Ohio
Ohio
$582K +$510K +19,250 +713%
California Public Employees Retirement System
39
California Public Employees Retirement System
California
$566K -$13.7K -500 -2%
CS
40
Credit Suisse
Switzerland
$552K +$552K +20,828 New
Charles Schwab
41
Charles Schwab
California
$544K +$95.5K +3,600 +21%
Jane Street
42
Jane Street
New York
$521K +$521K +19,635 New
TA
43
Teachers Advisors
New York
$514K +$100K +3,783 +24%
DAM
44
Deltec Asset Management
New York
$510K – – –
SM
45
Sabby Management
Florida
$504K +$504K +19,000 New
Two Sigma Investments
46
Two Sigma Investments
New York
$472K +$472K +17,790 New
RhumbLine Advisers
47
RhumbLine Advisers
Massachusetts
$457K +$29.2K +1,100 +7%
Deutsche Bank
48
Deutsche Bank
Germany
$417K -$766K -29,008 -65%
QSS
49
Quantitative Systematic Strategies
Florida
$388K +$388K +14,551 New
BOS
50
Bingham Osborn & Scarborough
California
$349K +$8.12K +306 +2%
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