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
826
$110K
827
$108K
828
$106K
829
$105K
830
$99K
831
$99K
832
$98K
833
$97K
834
$96K
835
$95K
836
$94K
837
$92.2K
838
$83K
839
$82K
840
$80K
841
$73K
842
$70K
843
$70K
844
$68K
845
$65.7K
846
$63K
847
$58.4K
848
$58K
849
$58K
850
$58K