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
501
$853K
502
$852K
503
$834K
504
$808K
505
$802K
506
$801K
507
$801K
508
$795K
509
$790K
510
$785K
511
$780K
512
$770K
513
$766K
514
$765K
515
$765K
516
$763K
517
$763K
518
$758K
519
$756K
520
$755K
521
$748K
522
$741K
523
$714K
524
$711K
525
$710K