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
626
$671K
627
$669K
628
$659K
629
$659K
630
$651K
631
$648K
632
$640K
633
$631K
634
$626K
635
$619K
636
$618K
637
$618K
638
$600K
639
$598K
640
$595K
641
$584K
642
$584K
643
$584K
644
$584K
645
$578K
646
$575K
647
$569K
648
$565K
649
$553K
650
$547K