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
701
$383K
702
$381K
703
$380K
704
$375K
705
$374K
706
$373K
707
$370K
708
$366K
709
$362K
710
$360K
711
$355K
712
$352K
713
$347K
714
$347K
715
$346K
716
$342K
717
$338K
718
$338K
719
$336K
720
$335K
721
$327K
722
$323K
723
$321K
724
$321K
725
$321K