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
551
$581K
552
$581K
553
$559K
554
$558K
555
$557K
556
$551K
557
$547K
558
$535K
559
$529K
560
$525K
561
$508K
562
$503K
563
$493K
564
$483K
565
$482K
566
$479K
567
$476K
568
$475K
569
$473K
570
$459K
571
$459K
572
$456K
573
$455K
574
$455K
575
$436K