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
701
$576K
702
$574K
703
$574K
704
$566K
705
$565K
706
$547K
707
$544K
708
$543K
709
$541K
710
$539K
711
$538K
712
$537K
713
$531K
714
$528K
715
$515K
716
$512K
717
$510K
718
$504K
719
$498K
720
$496K
721
$495K
722
$492K
723
$490K
724
$485K
725
$485K