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
726
$479K
727
$479K
728
$469K
729
$465K
730
$465K
731
$465K
732
$465K
733
$454K
734
$446K
735
$444K
736
$444K
737
$442K
738
$442K
739
$441K
740
$440K
741
$435K
742
$430K
743
$430K
744
$429K
745
$427K
746
$424K
747
$423K
748
$422K
749
$416K
750
$410K