NEW YORK (TheStreet) -- RATINGS CHANGES
Ameresco (AMRC) was upgraded to hold at TheStreet Ratings.
Read More: 10 Stocks Carl Icahn Loves in 2014Exterran (EXH) was upgraded to buy at TheStreet Ratings. Editor's note: To see analysts' stock comments and changes to price targets and earnings estimates, go to "Street Notes" which is available only to Real Money subscribers. To find out how to become a subscriber, please click here. Follow TheStreet on Twitter and become a fan on Facebook.