NEW YORK (TheStreet) -- RATINGS CHANGES

Alaska Air (ALK) was upgraded to outperform from neutral by Credit Suisse, which set a 12-month price target of $78, saying the company is positioned well and can continue to buy back stock.

CA Inc. (CA) was started at market perform by JMP Securities, which said CA needs to prove it can sustain revenue growth.

Cerner (CERN) was started at outperform by Oppenheimer, which set a 12-month price target of $89, saying the company can continue to gain market share.

Carter's (CRI) was downgraded to neutral and given a 12-month price target of $105 by Sterne Agee, which said this a valuation call, as the stock is up 50% over the past year.

CVS (CVS) was started at outperform by Oppenheimer, which set a 12-month price target of $119, saying CVS' focus on health can drive growth.

Energen (EGN) was upgraded to overweight from sector weight by Keybanc, which set a 12-month price target of $84, saying an equity deal helps address the cash-flow deficit.

Genuine Parts (GPC) was upgraded to buy from hold by Argus, which set a 12-month price target of $104, saying to expect better earnings in all business segments in the second half of the year.

Juniper Networks (JNPR) was upgraded to outperform from neutral by Wedbush, which set a 12-month price target of $32, saying organic growth should return in the near term.

Rackspace (RAX) was downgraded to hold by TheStreet Ratings team. You can view the full analysis from the report here: RAX Ratings Report.

Sigma Designs (SIGM) was started at buy and given a 12-month price target of $15 by Benchmark, which said its bullish investment thesis centers on the likelihood the company will continue to grow rapidly and produce sales in excess of consensus views based on (1) market share gains and strong market dynamics in ultra HD SoC sales (2) rapidly growing market and ecosystem for the Z-Wave short-range, mesh wireless networking standard.

Southwest Airlines (LUV) was downgraded to underweight from overweight by Barclays, which set a 12-month price target of $39. Southwest trades at a premium valuation, and will struggle to meet growth expectations, Barclays said.

Spirit Airlines (SAVE) was downgraded to neutral from outperform by Credit Suisse, which set a 12-month price target of $69. Credit Suisse said estimates also have been cut, as the company is facing increased price competition.

U.S. Cellular (USM) was downgraded to hold by TheStreet Ratings team. You can view the full analysis from the report here: USM Ratings Report.

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