646 hedge funds and large institutions have $47.5B invested in Biogen in 2013 Q2 according to their latest regulatory filings, with 646 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
646
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
29
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$527M
Puts
$606M
Net Calls
Net Calls Change

Top Buyers

No buyers this quarter

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change
Change in
Stake
626
$13K
627
$13K
628
$12K
629
$11K
630
$11K
631
$11K
632
$11K
633
$11K
634
$9K
635
$9K
636
$8.12K
637
$7.05K
638
$7K
639
$7K
640
$6.42K
641
$6K
642
$6K
643
$4K
644
$4K
645
$2.14K
646
$2K