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
676
$439K
677
$438K
678
$437K
679
$435K
680
$435K
681
$433K
682
$432K
683
$431K
684
$422K
685
$417K
686
$416K
687
$414K
688
$412K
689
$412K
690
$409K
691
$408K
692
$405K
693
$402K
694
$401K
695
$395K
696
$390K
697
$389K
698
$388K
699
$385K
700
$383K