923 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, 407 increasing their positions, 283 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
923
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
$448K
677
$439K
678
$438K
679
$437K
680
$435K
681
$435K
682
$433K
683
$432K
684
$431K
685
$422K
686
$417K
687
$416K
688
$414K
689
$412K
690
$412K
691
$409K
692
$408K
693
$405K
694
$402K
695
$401K
696
$395K
697
$390K
698
$389K
699
$388K
700
$385K