947 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, 364 increasing their positions, 350 reducing their positions, and 103 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
947
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
51
$147M
52
$147M
53
$146M
54
$145M
55
$144M
56
$139M
57
$134M
58
$124M
59
$123M
60
$117M
61
$113M
62
$111M
63
$99.3M
64
$99.2M
65
$97.4M
66
$97M
67
$96.7M
68
$96.2M
69
$95.4M
70
$90M
71
$88.6M
72
$88.4M
73
$88.3M
74
$88.1M
75
$88.1M