RATINGS CHANGES

Ameris (ABCB - Get Report) was downgraded to neutral from overweight at Piper Jaffray. The valuation is less attractive, based on a $31 price target, Piper said. 

3D Systems (DDD - Get Report) was downgraded to hold from buy at Needham. The valuation is less attractive, now that shares are up 110% year-to-date, Needham said. 

Discover Financial (DFS - Get Report) was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: DFS.

Denbury (DNR - Get Report) was downgraded to sector weight at Keybanc. The company will likely endure multiple years of declining production, Keybanc said. 

General Electric (GE - Get Report) was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: GE.

Flextronics (FLEX - Get Report) was initiated with an outperform rating at JPMorgan. $15 price target. The company is improving margins, but trades at a discount to its peers, JPMorgan said. 

Liberty SiriusXM (LSXMA - Get Report) was initiated with a buy rating at Bank of America/Merrill Lynch. $44 price target. The company has multiple ways to improve valuation closer to net asset value, analysts said. 

Medidata (MDSO - Get Report) was downgraded to underperform at Jefferies. $36 price target. The core market is more mature than expected, Jefferies said. 

Newmont Mining (NEM - Get Report) was upgraded to outperform from sector perform at RBC Capital. $40 price target. The company should see higher production growth, RBC said. 

Perrigo (PRGO - Get Report) was downgraded to hold at Jefferies. $112 price target. The valuation is less attractive, given the company's new guidance, Jefferies said. 

Range Resources (RRC - Get Report) was downgraded to sector weight at Keybanc, based on a less attractive valuation. 

US Bancorp (USB - Get Report) was downgraded to hold at Deutsche Bank. $46 price target. The valuation is less attractive, as the company is trading at a premium to its peers, Deutsche said.

This article was written by a staff member of TheStreet.