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
876
$29K
877
$29K
878
$28K
879
$27K
880
$26K
881
$26K
882
$24K
883
$23K
884
$23K
885
$22K
886
$21K
887
$21K
888
$21K
889
$20K
890
$18K
891
$17K
892
$16K
893
$15K
894
$15K
895
$13K
896
$12K
897
$12K
898
$12K
899
$11K
900
$11K