NEW YORK (TheStreet) -- RATINGS CHANGES

Bank of the Ozarks (OZRK) was downgraded to hold by Drexel Hamilton, which cited valuation.

Bed Bath & Beyond (BBBY - Get Report) was downgraded to hold by TheStreet Ratings. You can view the full analysis from the report here: BBBY Ratings Report.

Cooper Tire & Rubber (CTB - Get Report) was reinstated at hold by Deutsche Bank, which set a $37 price target. After re-assessing the outlook for Cooper Tire's based on the company's new profile, and updated views on the industry, Deutsche Bank said its base case valuation framework leaves it neutral. But Deutsche Bank said it believes opportunities are skewed to the upside.

Community Health Systems (CYH - Get Report) was upgraded to outperform from market perform by Well Fargo, which sees a valuation range of $70 to $84. The company's Debt/Ebitda of 5.4x is toward the high end of the industry range which Wells Fargo analysts view as a positive as multiples expand.

FireEye (FEYE - Get Report) was downgraded to equal-weight by Barclays, which cited valuation, as a new analyst has a $56 price target.

HCA Holdings (HCA - Get Report) was upgraded to outperform from market perform by Wells Fargo, which sees a valuation range of $92 to $112. Improved long-term outlook for the industry from a continued decline in the number of uninsured individuals in the U.S. and a prolonged increase in the company's Ebitda growth rate prompted the upgrade, Wells Fargo said.

Mosaic (MOS - Get Report) was downgraded to hold by TheStreet Ratings. You can view the full analysis from the report here: MOS Ratings Report

Target (TGT - Get Report) was downgraded to market perform from outperform by BMO Capital, which set an $85 price target, saying that a shift in merchandising and and supply chain management adds near-term risk to the story.

Tenet Healthcare (THC - Get Report) was upgraded to outperform from market perform by Wells Fargo, which sees a valuation range of $64 to $74. The court decision in favor of the Affordable Care Act should allow less volatile and accelerated Ebitda growth to continue which should drive multiple expansion, Wells Fargo said. 

UnitedHealth Group (UNH - Get Report) was upgraded to buy from neutral by Sterne Agree, which set a $161 price target, saying the company can gain market share and should continue to be the best capital allocator in the industry.

Zions Bancorporation (ZION - Get Report) was upgraded to outperform by Credit Suisse, which set a $38 price target, saying the company has a flexible balance sheet and should benefit from higher interest rates.

Zoetis (ZTS) was downgraded to market perform from outperform by BMO Capital, which cited valuation, based on a $57 price target.