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
601
$58K
602
$55K
603
$54K
604
$51K
605
$45K
606
$43K
607
$43K
608
$42K
609
$41K
610
$39K
611
$39K
612
$35K
613
$29K
614
$27K
615
$26.3K
616
$26K
617
$25K
618
$25K
619
$24K
620
$22K
621
$22K
622
$22K
623
$20K
624
$19K
625
$15K