946 hedge funds and large institutions have $49.3B invested in Biogen in 2016 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 363 increasing their positions, 350 reducing their positions, and 103 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
946
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
32
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.05B
Puts
$1.13B
Net Calls
Net Calls Change

Top Buyers

1 +$458M
2 +$148M
3 +$114M
4
VAM
Visium Asset Management
New York
+$99.3M
5
Invesco
Invesco
Georgia
+$89.1M
Name Holding Trade Value Shares
Change
Change in
Stake
1
$4.23B
2
$3.51B
3
$3.48B
4
$2.32B
5
$2.2B
6
$2.11B
7
$1.5B
8
$1.24B
9
$1.21B
10
$1.07B
11
$985M
12
$941M
13
$902M
14
$823M
15
$818M
16
$806M
17
$788M
18
$701M
19
$580M
20
$538M
21
$524M
22
$501M
23
$473M
24
$429M
25
$398M