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
876
$29K
877
$28K
878
$27K
879
$26K
880
$26K
881
$24K
882
$23K
883
$23K
884
$22K
885
$21K
886
$21K
887
$21K
888
$20K
889
$18K
890
$17K
891
$16K
892
$15K
893
$15K
894
$13K
895
$12K
896
$12K
897
$12K
898
$11K
899
$11K
900
$10K