776 hedge funds and large institutions have $66.1B invested in Biogen in 2014 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 284 increasing their positions, 294 reducing their positions, and 46 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
776
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
33
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$893M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
601
$366K
602
$362K
603
$362K
604
$360K
605
$360K
606
$357K
607
$352K
608
$352K
609
$348K
610
$347K
611
$347K
612
$344K
613
$338K
614
$336K
615
$335K
616
$330K
617
$329K
618
$329K
619
$321K
620
$320K
621
$319K
622
$319K
623
$314K
624
$308K
625
$306K