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Prothena Corp
PRTA

Overview Fund Activity

120 hedge funds and large institutions have $414M invested in Prothena Corp in 2018 Q4 according to their latest regulatory filings, with 19 funds opening new positions, 35 increasing their positions, 32 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
120
Holders Change
-10
Holders Change %
-7.69%
% of All Funds
2.68%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.04%
New
19
Increased
35
Reduced
32
Closed
29
Calls
$3.91M
Puts
$11.9M
Net Calls
-$7.97M
Net Calls Change
+$11.1M

Top Buyers

1
EC
1
EcoR1 Capital
California
$8.63M
2
SCM
2
Scopia Capital Management
New York
$47.6M
3
Citadel Advisors
3
Citadel Advisors
Florida
$12.3M
4
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$13.1M
5
HT
5
HAP Trading
New York
$6.75M

Top Sellers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$22M
2
Millennium Management
2
Millennium Management
New York
$731K
3
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$0
4
State Street
4
State Street
Massachusetts
$15.7M
5
Bank of America
5
Bank of America
North Carolina
$5.45M
Name Holding Trade Value Shares
Change 		Shares
Change %
Man Group
26
Man Group
United Kingdom
$1.3M -$316K -30,632 -20%
TCIM
27
TIAA CREF Investment Management
New York
$1.19M +$154K +14,996 +15%
TA
28
Teachers Advisors
New York
$1.04M +$8.23K +799 +0.8%
Morgan Stanley
29
Morgan Stanley
New York
$1.03M +$282K +27,366 +38%
Susquehanna International Group
30
Susquehanna International Group
Pennsylvania
$887K +$887K +86,145 New
Walleye Trading
31
Walleye Trading
New York
$853K +$294K +28,564 +53%
Millennium Management
32
Millennium Management
New York
$731K -$6.87M -667,063 -90%
Swiss National Bank
33
Swiss National Bank
Switzerland
$725K +$41.2K +4,000 +6%
California State Teachers Retirement System (CalSTRS)
34
California State Teachers Retirement System (CalSTRS)
California
$648K +$14.9K +1,443 +2%
D.E. Shaw & Co
35
D.E. Shaw & Co
New York
$603K +$173K +16,779 +40%
Russell Investments Group
36
Russell Investments Group
United Kingdom
$593K +$60.2K +5,839 +11%
RhumbLine Advisers
37
RhumbLine Advisers
Massachusetts
$591K +$181K +17,569 +44%
AllianceBernstein
38
AllianceBernstein
Tennessee
$578K – – –
JPMorgan Chase & Co
39
JPMorgan Chase & Co
New York
$514K -$533K -51,738 -51%
Jacobs Levy Equity Management
40
Jacobs Levy Equity Management
New Jersey
$496K +$496K +48,175 New
TCM
41
Tang Capital Management
California
$490K +$490K +47,610 New
California Public Employees Retirement System
42
California Public Employees Retirement System
California
$477K -$76.5K -7,426 -14%
PI
43
PEAK6 Investments
Illinois
$458K +$428K +41,582 +1,432%
New York State Common Retirement Fund
44
New York State Common Retirement Fund
New York
$428K – – –
State of Wisconsin Investment Board
45
State of Wisconsin Investment Board
Wisconsin
$427K +$6.17K +600 +1%
OAM
46
Oxford Asset Management
United Kingdom
$401K +$401K +38,913 New
Group One Trading
47
Group One Trading
Illinois
$395K +$19.1K +1,853 +5%
Invesco
48
Invesco
Georgia
$395K +$51.9K +5,039 +15%
CS
49
Credit Suisse
Switzerland
$362K +$50K +4,852 +16%
ARTA
50
A.R.T. Advisors
New York
$344K -$389K -37,691 -53%
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