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
526
$708K
527
$707K
528
$703K
529
$696K
530
$688K
531
$681K
532
$671K
533
$671K
534
$664K
535
$658K
536
$657K
537
$652K
538
$650K
539
$648K
540
$644K
541
$633K
542
$630K
543
$625K
544
$612K
545
$611K
546
$609K
547
$600K
548
$594K
549
$587K
550
$584K