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
751
$406K
752
$404K
753
$404K
754
$404K
755
$404K
756
$404K
757
$404K
758
$404K
759
$404K
760
$403K
761
$402K
762
$401K
763
$400K
764
$396K
765
$394K
766
$385K
767
$376K
768
$372K
769
$371K
770
$366K
771
$364K
772
$364K
773
$364K
774
$364K
775
$362K