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
751
$277K
752
$277K
753
$276K
754
$276K
755
$273K
756
$271K
757
$271K
758
$270K
759
$268K
760
$268K
761
$265K
762
$264K
763
$263K
764
$263K
765
$263K
766
$259K
767
$259K
768
$257K
769
$257K
770
$252K
771
$251K
772
$244K
773
$243K
774
$242K
775
$235K