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
676
$478K
677
$474K
678
$473K
679
$472K
680
$471K
681
$469K
682
$467K
683
$463K
684
$459K
685
$455K
686
$451K
687
$450K
688
$446K
689
$443K
690
$435K
691
$432K
692
$432K
693
$431K
694
$430K
695
$427K
696
$426K
697
$420K
698
$418K
699
$417K
700
$416K