884 hedge funds and large institutions have $72.3B invested in Biogen in 2014 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 343 increasing their positions, 279 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
884
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
52
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$975M
Puts
$1.36B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
826
$35K
827
$35K
828
$34K
829
$34K
830
$34K
831
$34K
832
$34K
833
$34K
834
$33K
835
$32K
836
$31K
837
$29K
838
$29K
839
$28K
840
$27K
841
$25K
842
$24K
843
$22K
844
$22K
845
$20K
846
$20K
847
$19K
848
$17K
849
$17K
850
$16K