441 hedge funds and large institutions have $6.73B invested in Ameren in 2015 Q1 according to their latest regulatory filings, with 47 funds opening new positions, 127 increasing their positions, 179 reducing their positions, and 32 closing their positions.

Holders
441
Holders Change
+9
Holders Change %
+2.08%
% of All Funds
11.76%
Holding in Top 10
2
Holding in Top 10 Change
+2
Holding in Top 10 Change %
%
% of All Funds
0.05%
New
47
Increased
127
Reduced
179
Closed
32
Calls
$4.89M
Puts
$1.96M
Net Calls
+$2.92M
Net Calls Change
-$3.79M
Name Market Value Shares Shares
Change
Shares
Change %
Walleye Trading
476
Walleye Trading
New York
Twin Tree Management
477
Twin Tree Management
Texas