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Prothena Corp
PRTA

127 hedge funds and large institutions have $542M invested in Prothena Corp in 2014 Q4 according to their latest regulatory filings, with 24 funds opening new positions, 38 increasing their positions, 32 reducing their positions, and 22 closing their positions.

New
Increased
Maintained
Reduced
Closed

19% more repeat investments, than reductions

Existing positions increased: 38 | Existing positions reduced: 32

7% more capital invested

Capital invested by funds: $508M → $542M (+$34.7M)

9% more first-time investments, than exits

New positions opened: 24 | Existing positions closed: 22

0% more funds holding

Funds holding: 127 → 127 (0)

28% less call options, than puts

Call options by funds: $3.1M | Put options by funds: $4.28M

Holders
127
Holders Change
–
Holders Change %
0%
% of All Funds
3.39%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.03%
New
24
Increased
38
Reduced
32
Closed
22
Calls
$3.1M
Puts
$4.28M
Net Calls
-$1.18M
Net Calls Change
-$4.07M

Top Buyers

Rank Fund Capital Flow
1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$10.2M
2
Millennium Management
Millennium Management
New York
+$4.22M
3
NI
Numeric Investors
Massachusetts
+$3.44M
4
State Street
State Street
Massachusetts
+$2.8M
5
BIT
BlackRock Institutional Trust
California
+$2.73M

Top Sellers

Rank Fund Capital Flow
1
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$6.65M
2
TCIM
TIAA CREF Investment Management
New York
-$6.57M
3
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
-$3.73M
4
OM
Opaleye Management
Massachusetts
-$3.48M
5
PC
PointState Capital
New York
-$3.13M
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$85.3M +$25.6K +1,228 +0%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$71.3M +$10.2M +490,300 +17%
WIM
3
Woodford Investment Management
United Kingdom
$69.3M +$67.6M +3,237,363 New
Wellington Management Group
4
Wellington Management Group
Massachusetts
$52.1M +$2.54M +121,749 +5%
Capital World Investors
5
Capital World Investors
California
$26.2M – – –
State Street
6
State Street
Massachusetts
$23.9M +$2.8M +134,060 +13%
Westfield Capital Management
7
Westfield Capital Management
Massachusetts
$22.4M -$1.67M -79,845 -7%
BFA
8
BlackRock Fund Advisors
California
$21.9M +$2.05M +98,448 +10%
Millennium Management
9
Millennium Management
New York
$18M +$4.22M +202,196 +30%
Jennison Associates
10
Jennison Associates
New York
$14.5M -$1.87M -89,425 -11%
PAI
11
Palo Alto Investors
California
$14.3M +$363K +17,400 +3%
BIT
12
BlackRock Institutional Trust
California
$9.22M +$2.73M +130,888 +42%
Northern Trust
13
Northern Trust
Illinois
$8.52M +$305K +14,616 +4%
PC
14
PointState Capital
New York
$8.3M -$3.13M -150,000 -27%
Vanguard Group
15
Vanguard Group
Pennsylvania
$7.79M -$563K -26,973 -7%
NI
16
Numeric Investors
Massachusetts
$7.44M +$3.44M +164,830 +85%
PA
17
Perceptive Advisors
New York
$5.13M -$1.1M -52,664 -18%
TA
18
Teachers Advisors
New York
$5.05M +$367K +17,606 +8%
RSCM
19
Rock Springs Capital Management
Maryland
$4.2M – – –
GC
20
Guggenheim Capital
Illinois
$4.18M -$288K -13,823 -6%
American Century Companies
21
American Century Companies
Missouri
$4M +$369K +17,690 +10%
Norges Bank
22
Norges Bank
Norway
$3.94M -$1.25M -60,085 -24%
Prudential Financial
23
Prudential Financial
New Jersey
$3.31M -$223K -10,700 -6%
Geode Capital Management
24
Geode Capital Management
Massachusetts
$3.19M -$319K -15,310 -9%
Bank of New York Mellon
25
Bank of New York Mellon
New York
$2.9M +$316K +15,140 +12%
1
2 3 4 5

PRTA Hedge Fund Activity: Q4 2014 in Review

127 of the 3,749 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q4 2014, worth a combined $542M — up 6.8% from $508M a quarter earlier.

Buyers outnumbered sellers: 24 funds opened new PRTA positions and 22 closed out — a net gain of 2 holders — while 38 added to existing stakes and 32 trimmed.

The largest buyer was T. Rowe Price Associates, adding an estimated $10.2M. The largest seller was Adage Capital Partners, exiting entirely with an estimated $6.65M sold.

  • 127 institutional investors held Prothena Corp (PRTA) as of Q4 2014, unchanged from Q3 2014.
  • Funds reported $542M of Prothena Corp stock for Q4 2014, up 6.8% quarter-over-quarter.
  • 24 funds opened new Prothena Corp positions in Q4 2014 and 22 closed out, a net change of +2 holders.
  • The largest Prothena Corp buyer in Q4 2014 was T. Rowe Price Associates, an estimated $10.2M added.
  • The largest Prothena Corp seller in Q4 2014 was Adage Capital Partners, an estimated $6.65M sold.

Based on aggregated 13F filings for Q4 2014.