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
851
$116K
852
$112K
853
$111K
854
$109K
855
$107K
856
$104K
857
$103K
858
$103K
859
$102K
860
$99K
861
$95K
862
$95K
863
$93K
864
$91K
865
$87K
866
$75K
867
$73K
868
$72K
869
$70.8K
870
$69K
871
$68K
872
$67K
873
$67K
874
$64K
875
$64K