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
726
$362K
727
$360K
728
$359K
729
$359K
730
$358K
731
$355K
732
$354K
733
$354K
734
$354K
735
$352K
736
$351K
737
$347K
738
$347K
739
$344K
740
$342K
741
$341K
742
$341K
743
$336K
744
$333K
745
$333K
746
$332K
747
$327K
748
$326K
749
$325K
750
$321K