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
851
$56K
852
$55K
853
$55K
854
$53K
855
$51K
856
$44K
857
$44K
858
$43K
859
$43K
860
$39K
861
$39K
862
$38K
863
$36K
864
$36K
865
$35K
866
$32K
867
$31K
868
$30K
869
$29K
870
$29K
871
$29K
872
$29K
873
$29K
874
$29K
875
$29K