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Prothena Corp
PRTA

153 hedge funds and large institutions have $2.79B invested in Prothena Corp in 2017 Q3 according to their latest regulatory filings, with 25 funds opening new positions, 51 increasing their positions, 34 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

56% more first-time investments, than exits

New positions opened: 25 | Existing positions closed: 16

50% more repeat investments, than reductions

Existing positions increased: 51 | Existing positions reduced: 34

21% more capital invested

Capital invested by funds: $2.3B → $2.79B (+$490M)

6% more funds holding

Funds holding: 145 → 153 (+8)

0.75% more ownership

Funds ownership: 111.84% → 112.59% (+0.75%)

7% less call options, than puts

Call options by funds: $10.9M | Put options by funds: $11.7M

Holders
153
Holders Change
+8
Holders Change %
+5.52%
% of All Funds
3.81%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.05%
New
25
Increased
51
Reduced
34
Closed
16
Calls
$10.9M
Puts
$11.7M
Net Calls
-$849K
Net Calls Change
+$954K

Top Buyers

Rank Fund Capital Flow
1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$62.9M
2
PI
Putnam Investments
Massachusetts
+$15.9M
3
Wellington Management Group
Wellington Management Group
Massachusetts
+$5.98M
4
PC
PointState Capital
New York
+$4.89M
5
BlackRock
BlackRock
New York
+$3.6M

Top Sellers

Rank Fund Capital Flow
1
RG
Redmile Group
California
-$27.6M
2
Citadel Advisors
Citadel Advisors
Florida
-$14.9M
3
Wells Fargo
Wells Fargo
California
-$14.7M
4
ORI
Oak Ridge Investments
Illinois
-$7.21M
5
OM
Opaleye Management
Massachusetts
-$4.6M
Name Holding Trade Value Shares
Change 		Change in
Stake
HRCM
26
Hood River Capital Management
Florida
$12.8M +$257K +4,202 +2%
SAM
27
Sectoral Asset Management
Quebec, Canada
$12.7M +$2.75M +44,863 +30%
Bank of New York Mellon
28
Bank of New York Mellon
New York
$12M -$2.57K -42 -0%
Charles Schwab
29
Charles Schwab
California
$11.2M +$545K +8,897 +5%
O
30
OppenheimerFunds
New York
$10.9M -$13.2K -215 -0.1%
Deutsche Bank
31
Deutsche Bank
Germany
$10.9M +$2.84M +46,413 +38%
Axa
32
Axa
France
$9.36M -$123K -2,012 -1%
CS
33
Credit Suisse
Switzerland
$9.3M +$1.15M +18,703 +15%
EAM
34
Eventide Asset Management
Massachusetts
$7.77M – – –
TCIM
35
TIAA CREF Investment Management
New York
$7.61M -$193K -3,145 -3%
AC
36
Ascend Capital
California
$7.52M +$592K +9,659 +9%
JP Morgan Chase
37
JP Morgan Chase
New York
$6.72M -$109K -1,775 -2%
New York State Common Retirement Fund
38
New York State Common Retirement Fund
New York
$6.15M +$3.26M +53,300 +128%
ERSOT
39
Employees Retirement System of Texas
Texas
$5.89M – – –
Morgan Stanley
40
Morgan Stanley
New York
$5.79M +$1.27M +20,747 +30%
GC
41
Guggenheim Capital
Illinois
$4.65M +$920K +15,027 +26%
TA
42
Teachers Advisors
New York
$4.51M -$9.19K -150 -0.2%
Swiss National Bank
43
Swiss National Bank
Switzerland
$4.12M +$79.6K +1,300 +2%
PIM
44
Platinum Investment Management
Australia
$4.01M -$276K -4,500 -7%
California State Teachers Retirement System (CalSTRS)
45
California State Teachers Retirement System (CalSTRS)
California
$3.98M -$405K -6,615 -10%
California Public Employees Retirement System
46
California Public Employees Retirement System
California
$3.93M +$67.4K +1,100 +2%
SFM
47
Sphera Funds Management
Israel
$3.89M +$1.23M +20,000 +50%
AAMU
48
Amundi Asset Management US
Massachusetts
$3.75M -$5.02K -82 -0.1%
First Manhattan
49
First Manhattan
New York
$3.24M – – –
RhumbLine Advisers
50
RhumbLine Advisers
Massachusetts
$3.04M +$98.6K +1,610 +4%
1
2
3 4 5

PRTA Hedge Fund Activity: Q3 2017 in Review

153 of the 4,011 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q3 2017, worth a combined $2.79B — up 21% from $2.3B a quarter earlier.

Buyers outnumbered sellers: 25 funds opened new PRTA positions and 16 closed out — a net gain of 9 holders — while 51 added to existing stakes and 34 trimmed.

The largest buyer was T. Rowe Price Associates, adding an estimated $62.9M. The largest seller was Redmile Group, exiting entirely with an estimated $27.6M sold.

  • 153 institutional investors held Prothena Corp (PRTA) as of Q3 2017, up from 145 in Q2 2017.
  • Funds reported $2.79B of Prothena Corp stock for Q3 2017, up 21% quarter-over-quarter.
  • 25 funds opened new Prothena Corp positions in Q3 2017 and 16 closed out, a net change of +9 holders.
  • The largest Prothena Corp buyer in Q3 2017 was T. Rowe Price Associates, an estimated $62.9M added.
  • The largest Prothena Corp seller in Q3 2017 was Redmile Group, an estimated $27.6M sold.

Based on aggregated 13F filings for Q3 2017.