972 hedge funds and large institutions have $85.3B invested in Biogen in 2015 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 367 increasing their positions, 347 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
972
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
52
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.21B
Puts
$1.72B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
76
$174M
77
$167M
78
$160M
79
$157M
80
$153M
81
$150M
82
$149M
83
$144M
84
$143M
85
$138M
86
$135M
87
$135M
88
$128M
89
$127M
90
$125M
91
$123M
92
$122M
93
$120M
94
$117M
95
$114M
96
$112M
97
$111M
98
$111M
99
$110M
100
$105M