884 hedge funds and large institutions have $72.3B invested in Biogen in 2014 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 343 increasing their positions, 279 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
884
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
$975M
Puts
$1.36B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
676
$429K
677
$426K
678
$425K
679
$424K
680
$424K
681
$418K
682
$417K
683
$415K
684
$413K
685
$413K
686
$412K
687
$411K
688
$409K
689
$407K
690
$407K
691
$401K
692
$396K
693
$391K
694
$387K
695
$378K
696
$376K
697
$373K
698
$372K
699
$371K
700
$365K