RATINGS CHANGES

American Electric Power (AEP) - Get Report was upgraded to outperform from market perform at Wells Fargo. The company warrants a premium valuation, given its higher earnings growth potential, Wells said. 

American Express (AXP) - Get Report was upgraded to outperform from perform at Oppenheimer. The valuation is more attractive, based on a $98 price target. 

CenterPoint Energy (CNP) - Get Report was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: CNP.

Discovery (DISCA) - Get Report was downgraded to underperform from neutral at Credit Suisse. $23 price target. Lower ratings should hurt domestic advertising rates, Credit Suisse said. 

E-Trade Financial (ETFC) - Get Report was upgraded to buy from neutral at Goldman Sachs. $43 price target. The company is leveraged to rising interest rates and is keeping a tight lid on costs, Goldman said. 

Hill International (HIL) - Get Report was upgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: HIL.

Kennametal (KMT) - Get Report was upgraded to overweight at Keybanc. $40 price target. The company is poised to benefit from an improving business cycle, Keybanc said. 

Time (TIME) was upgraded to outperform at Wells Fargo. The valuation is more attractive, based on a potential combination with Meredith, Wells said. 

UMB Financial (UMBF) - Get Report was downgraded to neutral from overweight at Piper Jaffray. The valuation is less attractive, based on a $78 price target. 

Xerox (XRX) - Get Report was upgraded to buy from neutral at Goldman Sachs. $8.50 price target. The company is focused on generating strong free-cash flow, Goldman said.

This article was written by a staff member of TheStreet.