Analyst Upgrades

• JPMorgan upgraded Smith Micro (SMSI) to overweight from neutral and raised its price target to $15 from $9, citing the release of a WiFi iPad with MiFi from Verizon and Apple.
• Jefferies upgraded Whole Foods (WFMI) to buy from hold and raised its price target to $45 from $36, citing checks that indicate sales are accelerating and the company has been focused on expense control.
• Wells Fargo upgraded Ensco (ESV) and raised its price target to $54 to $56 from $46 to $47, citing valuation, the lifted deepwater drilling ban and higher oil prices.
• Gran Tierra Energy (GTE) was upgraded to buy from hold at Wunderlich, citing the company's Moqueta oil discovery as well as other near-term exploration opportunities, and raised its price target to $12.50 from $7.00.
• Chico's FAS (CHS) was upgraded to buy from hold at KeyBanc and set a $13 price target.
• UR-Energy (URE) was upgraded to buy from hold at KeyBanc.

Analyst Upgrades

• JPMorgan upgraded AstraZeneca (AZN) to neutral from underweight after the company's U.S. Crestor patent was ruled valid. The firm believes the ruling could lead to AstraZeneca announcing a sizeable share buyback program. AstraZeneca was also upgraded to buy from neutral at BofA/Merrill and to hold from underperform at Jefferies.
• Deutsche Bank upgraded Peabody Energy (BTU) to buy from hold, citing valuation and attractive fundamentals in the coal sector. The firm has a $57.50 price target for shares, and also maintains buy ratings on Arch Coal (ACI) and Alpha Natural (ANR).
• Oppenheimer upgraded NextEra Energy (NEE) to outperform from perform, citing valuation and an improving regulation outlook in Florida. The firm maintains a $55 price target for shares.
• Eaton Vance (EV) was upgraded to buy from neutral at BofA/Merrill.
• Dynamex (DDMX) was upgraded to overweight from equal weight at Stephens.
• Soleil upgraded RPM (RPM) to buy from gradually accumulate.

Analyst Upgrades

• Baird upgraded C.H. Robinson (CHRW) to outperform from neutral and has a $67 target on the stock. The firm upgraded shares citing growth opportunities given the capacity constrained environment.
• UBS upgraded Navistar (NAV) to buy from neutral, citing improved trucker preferences towards the company's engine technology.
• KeyBanc upgraded Crane (CR) to buy from hold based on valuation stabilization and potential upside in aerospace, among other reasons. The firm has a $39 target on the stock.
• United Therapeutics (UTHR) was upgraded to overweight from neutral at JPMorgan.
• Equifax (EFX) was upgraded to overweight from equal weight at Stephens.
• Brown & Brown (BRO) was upgraded to buy from hold at Citigroup.
  

Analyst Upgrades

• Deutsche Bank upgraded CME Group (CME) to buy from hold to reflect valuation and the company's improving trends. The firm raised its target price for shares to $325 from $320.
• JPMorgan upgraded Big Lots (BIG) to overweight from neutral. The firm believes the company's stabilizing comps and accelerating square foot growth should drive multiple expansion and raised its target price for shares to $38.
• Soleil upgraded PacWest Bancorp (PACW) to buy from hold as it views the company's bulk loan sale positively. The firm has a $24.50 target on the stock.
• Clean Harbors (CLH) was upgraded to buy from neutral at BofA/Merrill.
• Skilled Healthcare (SKH) was upgraded to outperform from market perform at Leerink.
• FARO Tech (FARO) was upgraded to buy from hold at Needham.

Analyst upgrades:

• Banc of America/Merrill upgraded Gymboree (NASDAQ:GYMB) to Buy from Underperform and raised their target to $33 from $15 following the company's Q1 comparable store sales guidance.
  
• Oppenheimer upgraded Lam Research (NASDAQ:LRCX) to Outperform from Perform after channel checks indicated the company's shipments are gaining momentum. The firm raised their price target on the stock to $35 from $20.
  
• Owens & Minor (NYSE:OMI) was raised to Outperform from Neutral at Credit Suisse. The firm upgraded shares but lowered their target to $45 from $46 citing underappreciated earnings growth and valuation.
• Albermarle (NYSE:ALB) was upgraded to Conviction Buy from Neutral at Goldman.
  
• Protective Life (NYSE:PL) was upgraded to Neutral from Sell at UBS.
  
• Maxim (NASDAQ:MXIM) was lifted to Buy from Hold at Canaccord.

Analyst upgrades:

• Jefferies upgraded NeuStar (NYSE:NSR) to Hold from Underperform on valuation following the recent weakness and raised their target price to $15 from $12.
  
• Oppenheimer upgraded Adobe Systems (NASDAQ:ADBE) to Outperform from Perform on valuation as they believe the recent pullback has created an attractive entry point into the name. The firm has a $27 target on the stock.
  
• UBS upgraded Pfizer (NYSE:PFE) and Wyeth (NYSE:WYE) to Buy from Neutral based on valuations. Pfizer's price target remains $18 and Wyeth's was raised to $50 from $38.
• Methanex (NASDAQ:MEOH) was upgraded to Sector Outperformer from Sector Performer at CIBC.
  
• BHP Billiton (NYSE:BHP) was raised to Buy from Hold at RBS.
  
• Anadys Pharma (NASDAQ:ANDS) was upgraded to Buy from Neutral at Piper Jaffray.

Analyst upgrades:

• Wachovia upgraded shares of Exelon (NYSE: EXC) to Outperform from Market Perform to reflect the company's attractive nuclear fleets and strong operational track record.
  
• Jesup & Lamont upgraded Ormat Technologies Inc. (NYSE: ORA) to Buy from Hold on valuation and increasing visibility on near-term Products revenue.
  
• RBC Capital upgraded Memc Electronic (NYSE: WFR) to Outperform from Sector Perform on expectations of improved demand growth following the likely eight-year extension of the US solar tax credit program.
• AmBev (NYSE: ABV) was raised to Outperform from Neutral at Credit Suisse.
  
• AmerisourceBergen (NYSE: ABC) was upgraded at Merrill Lynch to Buy from Neutral.
  
• Piper upgraded Anadys Pharma (NASDAQ: ANDS) to Neutral from Sell.

Analyst downgrades:

MOST NOTEWORTHY: Wal-Mart (WMT), Coldwater Creek (CWTR), Select Comfort (SCSS) and Anadys Pharma (ANDS) were today's noteworthy downgrades:

• Merrill downgraded Wal-Mart (NYSE: WMT) to Sell from Neutral citing expectations of margin erosion.

• Brean Murray cut Coldwater Creek (NASDAQ: CWTR) to Hold from Buy following their disappointing Q2 report and outlook.

• Select Comfort (NASDAQ: SCSS) was cut to Strong Sell from Hold at Matrix based on weak performance and high risk characteristics.

• Anadys Pharma (NASDAQ: ANDS) was downgraded to Neutral from Outperform at Cowen, citing pipeline setbacks over the last 12 months, and lack of near-term catalysts...

OTHER DOWNGRADES:

• Collective Brands (NYSE: PSS) was cut to Hold from Aggressive Buy.

• Sigma Designs (NASDAQ: SIGM) was cut to Hold from Buy at Needham.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: QLogic (QLGC), Cnet Networks (CNET), Taiwan Semiconductor (TSM), Darden Restaurants (DRI) and Anadys Pharma (ANDS) were today's noteworthy downgrades:

• QLogic (NASDAQ: QLGC) was cut by several firms:
  
• QLogic was cut to Neutral from Outperform and removed from JP Morgan's Focus List due to the lack of catalysts to drive shares higher.
  
• Caris cut shares to Average from Above Average and Pacific
  
• Crest downgraded QLogic to Sector Perform from Outperform as the company's profits decline.

• Citigtroup downgraded CNet Networks (NASDAQ: CNET) to Hold from Buy as they no longer expect material revenue growth acceleration and operating leverage in 2H07; First Albany cut shares to Neutral from Buy.

• HSBC downgraded shares of Taiwan Semiconductor (NYSE: TSM) to Neutral from Overweight to reflect worse than expected pricing pressures.

• Matrix downgraded shares of Darden Restaurants (NYSE: DRI) to Hold from Buy on increasing competition and rising costs.

• Piper cut Anadys Pharma (NASDAQ: ANDS) to Underperform from Outperform following the company's announcement that it has discontinued development of ANA975...

OTHER DOWNGRADES:

• First Albany cut Zimmer Holdings (NYSE: ZMH) to Buy from Strong Buy.

• Bear Stearns downgraded AutoNation (NYSE: AN) to Peer Perform from Outperform.

• Piper Jaffray downgraded Volcom (NASDAQ: VLCM) and Sierra Wireless (NASDAQ: SWIR) to Market Perform from Outperform.

• Bernstein downgraded Coca-Cola Enterprises (NYSE: CCE) to Underperform from Market Perform.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).