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
726
$311K
727
$306K
728
$306K
729
$305K
730
$305K
731
$299K
732
$299K
733
$298K
734
$297K
735
$294K
736
$292K
737
$292K
738
$292K
739
$292K
740
$292K
741
$292K
742
$289K
743
$287K
744
$287K
745
$286K
746
$286K
747
$286K
748
$285K
749
$282K
750
$278K