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Prothena Corp
PRTA

88 hedge funds and large institutions have $183M invested in Prothena Corp in 2013 Q3 according to their latest regulatory filings, with 14 funds opening new positions, 25 increasing their positions, 22 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed

405% more call options, than puts

Call options by funds: $101K | Put options by funds: $20K

56% more first-time investments, than exits

New positions opened: 14 | Existing positions closed: 9

49% more capital invested

Capital invested by funds: $123M → $183M (+$60.5M)

14% more repeat investments, than reductions

Existing positions increased: 25 | Existing positions reduced: 22

6% more funds holding

Funds holding: 83 → 88 (+5)

Holders
88
Holders Change
+5
Holders Change %
+6.02%
% of All Funds
2.85%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.03%
New
14
Increased
25
Reduced
22
Closed
9
Calls
$101K
Puts
$20K
Net Calls
+$81K
Net Calls Change
+$78K

Top Buyers

Rank Fund Capital Flow
1
RCM
RA Capital Management
Massachusetts
+$20.3M
2
Northern Trust
Northern Trust
Illinois
+$1.77M
3
Vanguard Group
Vanguard Group
Pennsylvania
+$1.61M
4
Millennium Management
Millennium Management
New York
+$1.26M
5
TC
TFS Capital
Pennsylvania
+$1.21M

Top Sellers

Rank Fund Capital Flow
1
Invesco
Invesco
Georgia
-$21.1M
2
Wellington Management Group
Wellington Management Group
Massachusetts
-$11.1M
3
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$5.01M
4
Morgan Stanley
Morgan Stanley
New York
-$682K
5
Deutsche Bank
Deutsche Bank
Germany
-$659K
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$39.3M -$256K -14,440 -0.7%
RCM
2
RA Capital Management
Massachusetts
$33.3M +$20.3M +1,148,592 +231%
Wellington Management Group
3
Wellington Management Group
Massachusetts
$22.5M -$11.1M -629,712 -36%
Adage Capital Partners
4
Adage Capital Partners
Massachusetts
$20.6M -$5.01M -282,985 -22%
Jennison Associates
5
Jennison Associates
New York
$9.96M -$150K -8,481 -2%
BBA
6
Baker Bros. Advisors
New York
$7.48M – – –
Norges Bank
7
Norges Bank
Norway
$7.08M – – –
BFA
8
BlackRock Fund Advisors
California
$6.9M +$626K +35,395 +12%
T. Rowe Price Associates
9
T. Rowe Price Associates
Maryland
$4M +$1.1M +61,900 +46%
BIT
10
BlackRock Institutional Trust
California
$3.22M +$696K +39,310 +33%
Northern Trust
11
Northern Trust
Illinois
$3.11M +$1.77M +100,268 +188%
State Street
12
State Street
Massachusetts
$3.07M +$566K +31,966 +27%
Vanguard Group
13
Vanguard Group
Pennsylvania
$2.41M +$1.61M +90,974 +322%
PAI
14
Palo Alto Investors
California
$1.79M – – –
TC
15
TFS Capital
Pennsylvania
$1.66M +$1.21M +68,491 +506%
Millennium Management
16
Millennium Management
New York
$1.44M +$1.26M +71,388 New
Invesco
17
Invesco
Georgia
$1.42M -$21.1M -1,192,609 -94%
Morgan Stanley
18
Morgan Stanley
New York
$1.3M -$682K -38,555 -37%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$1.2M +$846K +47,838 +416%
TCIM
20
TIAA CREF Investment Management
New York
$1.17M +$9.54K +539 +0.9%
Bank of New York Mellon
21
Bank of New York Mellon
New York
$1.09M +$89K +5,032 +10%
Deutsche Bank
22
Deutsche Bank
Germany
$904K -$659K -37,248 -45%
WMSA
23
Weiss Multi-Strategy Advisers
New York
$870K +$761K +43,000 New
SIM
24
Spark Investment Management
New York
$843K +$738K +41,700 New
BIM
25
BlackRock Investment Management
Delaware
$834K +$41.5K +2,346 +6%
1
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PRTA Hedge Fund Activity: Q3 2013 in Review

88 of the 3,084 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q3 2013, worth a combined $183M — up 49% from $123M a quarter earlier.

Buyers outnumbered sellers: 14 funds opened new PRTA positions and 9 closed out — a net gain of 5 holders — while 25 added to existing stakes and 22 trimmed.

The largest buyer was RA Capital Management, adding an estimated $20.3M. The largest seller was Invesco, cutting an estimated $21.1M.

  • 88 institutional investors held Prothena Corp (PRTA) as of Q3 2013, up from 83 in Q2 2013.
  • Funds reported $183M of Prothena Corp stock for Q3 2013, up 49% quarter-over-quarter.
  • 14 funds opened new Prothena Corp positions in Q3 2013 and 9 closed out, a net change of +5 holders.
  • The largest Prothena Corp buyer in Q3 2013 was RA Capital Management, an estimated $20.3M added.
  • The largest Prothena Corp seller in Q3 2013 was Invesco, an estimated $21.1M sold.

Based on aggregated 13F filings for Q3 2013.