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
876
$59K
877
$57K
878
$54K
879
$53K
880
$52K
881
$52K
882
$51K
883
$48K
884
$48K
885
$48K
886
$48K
887
$46K
888
$41K
889
$40K
890
$39K
891
$39K
892
$39K
893
$37K
894
$35K
895
$30K
896
$30K
897
$29K
898
$28K
899
$27K
900
$26.5K