973 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, 348 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
973
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
901
$63K
902
$61K
903
$60K
904
$57K
905
$52K
906
$51K
907
$50K
908
$48.7K
909
$44K
910
$44K
911
$43K
912
$42K
913
$42K
914
$40K
915
$40K
916
$40K
917
$40K
918
$40K
919
$40K
920
$38K
921
$38K
922
$37K
923
$36K
924
$34.5K
925
$33K