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Prothena Corp

127 hedge funds and large institutions have $508M invested in Prothena Corp in 2014 Q3 according to their latest regulatory filings, with 17 funds opening new positions, 42 increasing their positions, 38 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed

39% more call options, than puts

Call options by funds: $10.3M | Put options by funds: $7.38M

11% more repeat investments, than reductions

Existing positions increased: 42 | Existing positions reduced: 38

4% less capital invested

Capital invested by funds: $531M → $508M (-$23.4M)

4% less funds holding

Funds holding: 132127 (-5)

19% less first-time investments, than exits

New positions opened: 17 | Existing positions closed: 21

100% less funds holding in top 10

Funds holding in top 10: 10 (-1)

Holders
127
Holders Change
-5
Holders Change %
-3.79%
% of All Funds
3.69%
Holding in Top 10
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
New
17
Increased
42
Reduced
38
Closed
21
Calls
$10.3M
Puts
$7.38M
Net Calls
+$2.89M
Net Calls Change
+$1.6M
Name Holding Trade Value Shares
Change
Change in
Stake
Arrowstreet Capital
26
Arrowstreet Capital
Massachusetts
$3.73M +$2.99M +141,187 +516%
OM
27
Opaleye Management
Massachusetts
$3.48M +$3.05M +143,896 +1,098%
Balyasny Asset Management
28
Balyasny Asset Management
Illinois
$3.09M -$771K -36,363 -21%
TI
29
Turner Investments
Pennsylvania
$2.83M -$473K -22,330 -15%
RG
30
Redmile Group
California
$2.79M -$5.18M -244,547 -66%
Susquehanna International Group
31
Susquehanna International Group
Pennsylvania
$2.79M +$1.51M +71,340 +131%
Bank of New York Mellon
32
Bank of New York Mellon
New York
$2.75M +$569K +26,857 +28%
CCP
33
Clough Capital Partners
Massachusetts
$2.25M -$91.2K -4,300 -4%
Alyeska Investment Group
34
Alyeska Investment Group
Illinois
$2.24M -$2.84M -133,869 -57%
ERSOT
35
Employees Retirement System of Texas
Texas
$2.22M
Deutsche Bank
36
Deutsche Bank
Germany
$1.98M -$284K -13,411 -13%
BIM
37
BlackRock Investment Management
Delaware
$1.9M +$346K +16,335 +24%
CCA
38
Catalyst Capital Advisors
New York
$1.77M +$1.7M +80,000 New
OA
39
Omega Advisors
New York
$1.77M +$1.7M +80,000 New
WMSA
40
Weiss Multi-Strategy Advisers
New York
$1.44M
BA
41
BlackRock Advisors
Delaware
$1.36M +$923K +43,546 +242%
CS
42
Credit Suisse
Switzerland
$1.26M -$571K -26,957 -32%
Goldman Sachs
43
Goldman Sachs
New York
$1.25M -$53.9K -2,541 -4%
California State Teachers Retirement System (CalSTRS)
44
California State Teachers Retirement System (CalSTRS)
California
$1.09M +$196K +9,230 +23%
Charles Schwab
45
Charles Schwab
California
$1.07M +$344K +16,203 +50%
Marshall Wace
46
Marshall Wace
United Kingdom
$964K -$186K -8,759 -17%
AllianceBernstein
47
AllianceBernstein
Tennessee
$800K +$197K +9,300 +35%
UOC
48
UBS O'Connor
Illinois
$776K -$1.25M -58,800 -63%
GIM
49
Granahan Investment Management
Massachusetts
$751K
SFM
50
Sphera Funds Management
Israel
$663K +$634K +29,907 New

PRTA Hedge Fund Activity: Q3 2014 in Review

127 of the 3,446 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q3 2014, worth a combined $508M — down 4.4% from $531M a quarter earlier.

Sellers outnumbered buyers: 21 funds closed out of PRTA and 17 opened new positions — a net loss of 4 holders — while 38 trimmed existing stakes and 42 added.

The largest buyer was Fidelity Investments, adding an estimated $28.7M. The largest seller was Bank of America, cutting an estimated $34.8M.

  • 127 institutional investors held Prothena Corp (PRTA) as of Q3 2014, down from 132 in Q2 2014.
  • Funds reported $508M of Prothena Corp stock for Q3 2014, down 4.4% quarter-over-quarter.
  • 17 funds opened new Prothena Corp positions in Q3 2014 and 21 closed out, a net change of -4 holders.
  • The largest Prothena Corp buyer in Q3 2014 was Fidelity Investments, an estimated $28.7M added.
  • The largest Prothena Corp seller in Q3 2014 was Bank of America, an estimated $34.8M sold.

Based on aggregated 13F filings for Q3 2014.