973 hedge funds and large institutions have $85.3B invested in Biogen in 2015 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 367 increasing their positions, 348 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
973
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
52
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.21B
Puts
$1.72B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
626
$930K
627
$929K
628
$921K
629
$920K
630
$914K
631
$905K
632
$904K
633
$900K
634
$891K
635
$883K
636
$879K
637
$878K
638
$877K
639
$868K
640
$868K
641
$867K
642
$848K
643
$822K
644
$821K
645
$812K
646
$809K
647
$808K
648
$808K
649
$808K
650
$807K