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
701
$381K
702
$380K
703
$375K
704
$374K
705
$373K
706
$370K
707
$366K
708
$362K
709
$360K
710
$355K
711
$352K
712
$347K
713
$347K
714
$346K
715
$342K
716
$338K
717
$338K
718
$336K
719
$335K
720
$327K
721
$323K
722
$321K
723
$321K
724
$321K
725
$320K