947 hedge funds and large institutions have $49.3B invested in Biogen in 2016 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 364 increasing their positions, 350 reducing their positions, and 103 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
947
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
32
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.05B
Puts
$1.13B
Net Calls
Net Calls Change

Top Buyers

1 +$458M
2 +$148M
3 +$114M
4
VAM
Visium Asset Management
New York
+$99.3M
5
Invesco
Invesco
Georgia
+$89.1M
Name Holding Trade Value Shares
Change
Change in
Stake
826
$216K
827
$215K
828
$214K
829
$210K
830
$209K
831
$208K
832
$208K
833
$207K
834
$206K
835
$204K
836
$203K
837
$201K
838
$178K
839
$164K
840
$156K
841
$156K
842
$154K
843
$152K
844
$151K
845
$138K
846
$137K
847
$137K
848
$135K
849
$127K
850
$119K