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
901
$26K
902
$26K
903
$26K
904
$26K
905
$26K
906
$26K
907
$24K
908
$22K
909
$22K
910
$21K
911
$21K
912
$21K
913
$20K
914
$19K
915
$19K
916
$19K
917
$18K
918
$17K
919
$16K
920
$15K
921
$14K
922
$13K
923
$13K
924
$13K
925
$12K