922 hedge funds and large institutions have $58.4B invested in Biogen in 2015 Q3 according to their latest regulatory filings, with 105 funds opening new positions, 406 increasing their positions, 283 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
922
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
37
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.22B
Puts
$1.8B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
51
$192M
52
$186M
53
$182M
54
$182M
55
$178M
56
$177M
57
$175M
58
$173M
59
$173M
60
$167M
61
$160M
62
$154M
63
$152M
64
$149M
65
$142M
66
$137M
67
$137M
68
$136M
69
$136M
70
$134M
71
$132M
72
$125M
73
$123M
74
$116M
75
$112M