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
26
$397M
27
$374M
28
$339M
29
$330M
30
$323M
31
$293M
32
$280M
33
$279M
34
$260M
35
$253M
36
$234M
37
$223M
38
$217M
39
$216M
40
$211M
41
$204M
42
$201M
43
$184M
44
$176M
45
$175M
46
$169M
47
$165M
48
$161M
49
$157M
50
$156M