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
801
$206K
802
$203K
803
$202K
804
$202K
805
$202K
806
$201K
807
$201K
808
$193K
809
$187K
810
$175K
811
$175K
812
$160K
813
$155K
814
$153K
815
$146K
816
$132K
817
$132K
818
$127K
819
$120K
820
$117K
821
$117K
822
$116K
823
$115K
824
$111K
825
$110K