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
576
$434K
577
$433K
578
$432K
579
$425K
580
$419K
581
$410K
582
$407K
583
$407K
584
$405K
585
$403K
586
$403K
587
$398K
588
$398K
589
$394K
590
$392K
591
$391K
592
$384K
593
$383K
594
$383K
595
$382K
596
$382K
597
$376K
598
$375K
599
$373K
600
$367K