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
51
$271M
52
$269M
53
$262M
54
$257M
55
$247M
56
$247M
57
$235M
58
$233M
59
$233M
60
$233M
61
$232M
62
$225M
63
$221M
64
$209M
65
$208M
66
$207M
67
$205M
68
$197M
69
$191M
70
$185M
71
$183M
72
$182M
73
$181M
74
$179M
75
$179M