923 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, 407 increasing their positions, 283 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
923
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
$235K
777
$234K
778
$233K
779
$233K
780
$232K
781
$231K
782
$230K
783
$230K
784
$229K
785
$228K
786
$227K
787
$223K
788
$217K
789
$217K
790
$217K
791
$217K
792
$217K
793
$217K
794
$216K
795
$215K
796
$214K
797
$214K
798
$214K
799
$211K
800
$210K