818 hedge funds and large institutions have $71B invested in Biogen in 2014 Q3 according to their latest regulatory filings, with 91 funds opening new positions, 312 increasing their positions, 278 reducing their positions, and 47 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
818
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
41
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$754M
Puts
$1.23B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
751
$118K
752
$118K
753
$114K
754
$102K
755
$99K
756
$99K
757
$97K
758
$96K
759
$91K
760
$90K
761
$85K
762
$78K
763
$74K
764
$73K
765
$69K
766
$64K
767
$62K
768
$53K
769
$51K
770
$41K
771
$40K
772
$37K
773
$36K
774
$34K
775
$33K