972 hedge funds and large institutions have $85.3B invested in Biogen in 2015 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 367 increasing their positions, 347 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
972
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
$1.21B
Puts
$1.72B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
851
$212K
852
$212K
853
$212K
854
$208K
855
$207K
856
$206K
857
$203K
858
$202K
859
$202K
860
$202K
861
$202K
862
$200K
863
$183K
864
$175K
865
$175K
866
$166K
867
$165K
868
$162K
869
$161K
870
$160K
871
$159K
872
$153K
873
$152K
874
$151K
875
$147K