923 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, 407 increasing their positions, 283 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
923
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
$58K
852
$56K
853
$55K
854
$55K
855
$53K
856
$51K
857
$44K
858
$44K
859
$43K
860
$43K
861
$39K
862
$39K
863
$38K
864
$36K
865
$36K
866
$35K
867
$32K
868
$31K
869
$30K
870
$29K
871
$29K
872
$29K
873
$29K
874
$29K
875
$29K