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Arrowhead Research

100 hedge funds and large institutions have $259M invested in Arrowhead Research in 2014 Q4 according to their latest regulatory filings, with 28 funds opening new positions, 28 increasing their positions, 30 reducing their positions, and 36 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
100
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$3.49M
Puts
$6.13M
Net Calls
Net Calls Change

Top Buyers

1 +$22.1M
2 +$17.8M
3 +$17.4M
4
QF
QVT Financial
New York
+$13.9M
5
GPP
Great Point Partners
Connecticut
+$8.32M

Top Sellers

1 -$76.5M
2 -$22.8M
3 -$20.2M
4
PA
Perceptive Advisors
New York
-$18.4M
5
VAM
Visium Asset Management
New York
-$15.4M
Name Holding Trade Value Shares
Change
Change in
Stake
1
$27.5M
2
$25.6M
3
$22.1M
4
$19.3M
5
$17.4M
6
$14.1M
7
$12.6M
8
$12.5M
9
$11.2M
10
$9.08M
11
$8.32M
12
$8.24M
13
$6.4M
14
$6.32M
15
$5.58M
16
$4.29M
17
$3.88M
18
$3.14M
19
$2.95M
20
$2.42M
21
$2.38M
22
$2.25M
23
$2.14M
24
$2.06M
25
$2.04M