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
651
$540K
652
$538K
653
$538K
654
$534K
655
$530K
656
$525K
657
$525K
658
$522K
659
$519K
660
$515K
661
$512K
662
$511K
663
$501K
664
$480K
665
$473K
666
$473K
667
$467K
668
$466K
669
$466K
670
$457K
671
$456K
672
$455K
673
$455K
674
$453K
675
$448K