884 hedge funds and large institutions have $72.3B invested in Biogen in 2014 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 343 increasing their positions, 279 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
884
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
$975M
Puts
$1.36B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
751
$237K
752
$236K
753
$236K
754
$235K
755
$234K
756
$234K
757
$233K
758
$229K
759
$227K
760
$225K
761
$225K
762
$225K
763
$224K
764
$224K
765
$223K
766
$222K
767
$221K
768
$221K
769
$220K
770
$220K
771
$219K
772
$217K
773
$216K
774
$213K
775
$213K