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Prothena Corp

138 hedge funds and large institutions have $1.62B invested in Prothena Corp in 2015 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 48 increasing their positions, 35 reducing their positions, and 10 closing their positions.

New
Increased
Maintained
Reduced
Closed

150% more first-time investments, than exits

New positions opened: 25 | Existing positions closed: 10

59% more capital invested

Capital invested by funds: $1.02B → $1.62B (+$599M)

50% more funds holding in top 10

Funds holding in top 10: 23 (+1)

37% more repeat investments, than reductions

Existing positions increased: 48 | Existing positions reduced: 35

15% more call options, than puts

Call options by funds: $12.2M | Put options by funds: $10.6M

11% more funds holding

Funds holding: 124138 (+14)

Holders
138
Holders Change
+14
Holders Change %
+11.29%
% of All Funds
3.72%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.08%
New
25
Increased
48
Reduced
35
Closed
10
Calls
$12.2M
Puts
$10.6M
Net Calls
+$1.56M
Net Calls Change
+$6.55M
Name Holding Trade Value Shares
Change
Change in
Stake
WIM
1
Woodford Investment Management
United Kingdom
$291M +$71.8M +1,819,354 +49%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$247M +$23M +582,952 +14%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$183M +$1.42M +35,900 +1%
Wellington Management Group
4
Wellington Management Group
Massachusetts
$133M +$1.04M +26,331 +1%
Westfield Capital Management
5
Westfield Capital Management
Massachusetts
$73.4M -$13.5M -342,078 -20%
Capital World Investors
6
Capital World Investors
California
$64.4M -$1.58M -40,100 -3%
BFA
7
BlackRock Fund Advisors
California
$60.6M +$3.11M +78,692 +7%
State Street
8
State Street
Massachusetts
$56.1M -$4.88M -123,599 -10%
VAM
9
Visium Asset Management
New York
$52.5M +$27.4M +694,848 +230%
PAI
10
Palo Alto Investors
California
$36.7M
BIT
11
BlackRock Institutional Trust
California
$33.6M +$3.68M +93,366 +17%
Millennium Management
12
Millennium Management
New York
$28.4M -$7.83M -198,516 -27%
Northern Trust
13
Northern Trust
Illinois
$25.5M +$2.34M +59,389 +14%
Vanguard Group
14
Vanguard Group
Pennsylvania
$24.3M +$2.64M +66,838 +17%
Citadel Advisors
15
Citadel Advisors
Florida
$22M +$12.4M +313,553 +301%
Jennison Associates
16
Jennison Associates
New York
$21.2M -$6.89M -174,562 -30%
Invesco
17
Invesco
Georgia
$15.4M +$1.06M +26,894 +10%
CCI
18
Columbus Circle Investors
$14.8M +$11.1M +281,415 New
ORI
19
Oak Ridge Investments
Illinois
$13.9M +$10.4M +263,266 New
RSCM
20
Rock Springs Capital Management
Maryland
$13.2M +$493K +12,500 +5%
Marshall Wace
21
Marshall Wace
United Kingdom
$11.7M +$8.06M +204,290 +1,131%
TA
22
Teachers Advisors
New York
$10.7M +$311K +7,890 +4%
Geode Capital Management
23
Geode Capital Management
Massachusetts
$10.5M +$1.39M +35,267 +21%
GC
24
Guggenheim Capital
Illinois
$10.3M +$176K +4,472 +2%
Bank of New York Mellon
25
Bank of New York Mellon
New York
$10.2M +$1.62M +41,115 +27%

PRTA Hedge Fund Activity: Q2 2015 in Review

138 of the 3,711 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q2 2015, worth a combined $1.62B — up 59% from $1.02B a quarter earlier.

Buyers outnumbered sellers: 25 funds opened new PRTA positions and 10 closed out — a net gain of 15 holders — while 48 added to existing stakes and 35 trimmed.

The largest buyer was Woodford Investment Management, adding an estimated $71.8M. The largest seller was Westfield Capital Management, cutting an estimated $13.5M.

  • 138 institutional investors held Prothena Corp (PRTA) as of Q2 2015, up from 124 in Q1 2015.
  • Funds reported $1.62B of Prothena Corp stock for Q2 2015, up 59% quarter-over-quarter.
  • 25 funds opened new Prothena Corp positions in Q2 2015 and 10 closed out, a net change of +15 holders.
  • The largest Prothena Corp buyer in Q2 2015 was Woodford Investment Management, an estimated $71.8M added.
  • The largest Prothena Corp seller in Q2 2015 was Westfield Capital Management, an estimated $13.5M sold.

Based on aggregated 13F filings for Q2 2015.