973 hedge funds and large institutions have $85.3B invested in Biogen in 2015 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 367 increasing their positions, 348 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
973
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
52
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.21B
Puts
$1.72B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
551
$1.53M
552
$1.53M
553
$1.52M
554
$1.52M
555
$1.51M
556
$1.51M
557
$1.51M
558
$1.51M
559
$1.49M
560
$1.49M
561
$1.47M
562
$1.45M
563
$1.45M
564
$1.45M
565
$1.43M
566
$1.42M
567
$1.39M
568
$1.39M
569
$1.37M
570
$1.36M
571
$1.35M
572
$1.33M
573
$1.33M
574
$1.32M
575
$1.31M