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
826
$263K
827
$263K
828
$263K
829
$260K
830
$259K
831
$255K
832
$254K
833
$253K
834
$252K
835
$251K
836
$245K
837
$243K
838
$242K
839
$242K
840
$238K
841
$238K
842
$235K
843
$232K
844
$232K
845
$231K
846
$230K
847
$228K
848
$227K
849
$222K
850
$217K