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
776
$234K
777
$233K
778
$233K
779
$232K
780
$231K
781
$230K
782
$230K
783
$229K
784
$228K
785
$227K
786
$223K
787
$217K
788
$217K
789
$217K
790
$217K
791
$217K
792
$217K
793
$216K
794
$215K
795
$214K
796
$214K
797
$214K
798
$211K
799
$210K
800
$210K