Analyst Upgrades

• Exxon Mobil (XOM), Netflix (NFLX), Noble Corp. (NE), Pioneer Natural (PXD) and Noble Energy (NBL) to buy from neutral at Goldman.
• Cenovus Energy (CVE) to conviction buy from neutral and Atwood Oceanics (ATW) to neutral from sell at Goldman as well.
• Southern Company (SO) to buy from hold at Citigroup.
• Chevron (CVX) to buy from neutral at BofA/Merrill.
• Ryder (R), Entergy (ETR) and Seaspan (SSW) to buy from hold at Jefferies.
• Gerdau (GGB), Crown Castle (CCI) and American Tower (AMT) to buy from neutral at UBS.
• Aon (AON) and Willis Group (WSH) to buy from neutral at Janney Capital.
• Ryland Group (RYL) to buy from neutral at Ticonderoga.

Analyst Upgrades

• Polo Ralph Lauren (RL) to neutral from underperform at BofA/Merrill.
• Sigma-Aldrich (SIAL) to outperform from market perform at Leerink.
• Petrobras (PBR) to overweight from equal weight at Barclays.
• Silvercorp Metals (SVM) to buy from neutral at UBS.
• PROS (PRO) to buy from hold at Jefferies.
• Power Integrations (POWI) and Monolithic Power (MPWR) to buy from neutral at Roth Capital.
• Diodes (DIOD) to outperform from neutral at RW Baird.
• Whole Foods (WFMI) to hold from sell at Hapoalim.
• Sinclair Broadcast (SBGI) to overweight from neutral at JPMorgan.
• Sappi (SPP) to outperform from neutral at Macquarie.
• Alpha Natural (ANR) to buy from hold at BB&T.
• Watts Water (WTS) to buy from hold at Brean Murray.

Here are some highlights from this past week's earnings coverage on BloggingStocks:

• Aetna Inc. (AET) shares declined after the insurer issued a surprise earnings warning for 2010.
• Alcoa Inc. (AA) swung to a smaller-than-expected Q4 profit even as revenue declined, sending shares lower.
• Carter's Inc. (CRI) posted strong Q3 earnings that topped estimates and same-store sales growth.
• Chevron Corp. (CVX) shares declined slightly after the company issued a surprise earnings warning.
• Con-Way Inc. (CNW) was downgraded due in part to concerns about near-term earnings.

Carter's Inc. (CRI), a retailer of children's apparel, reported Q3 earnings on Friday. The company delivered a nice increase in both sales and net income. It even beat earnings estimates. Yet, the stock is down over 3% as I write this. The market can be funny sometimes, huh?

The top line increased over 10%. Adjusted per-share profit came in at 84 cents. That represented a whopping increase over the adjusted 58 cents per share recorded one year ago. Carter's also experienced a good rise in comparable store sales; the statistic went up over 6%. The OshKosh segment didn't do so well with comps, however.

Analyst upgrades:

• UBS upgraded Dollar Tree (NASDAQ: DLTR) to Buy from Neutral but lowered its target to $42 from $45 following the solid Q4 report. The firm expects Dollar Tree's cost containment to continue. JP Morgan upgraded shares to Overweight from Neutral on valuation as it believes the recent pullback is overdone and the company set achievable FY09 guidance. The firm has a $43 target on the stock.
  
• JP Morgan also upgraded Smithfield Foods (NYSE: SFD) to Overweight from Neutral on valuation as they find the stock oversold at current levels.
  
• KeyBanc upgraded Nordson (NASDAQ: NDSN) to Hold from Underweight based on valuation, strong balance sheet and cost reductions, and a solid track record of execution.
• Philips Electronics (NYSE: PHG) was upgraded to Neutral from Underweight at HSBC.
  
• Aeropostale (NYSE: ARO) was raised to Equal Weight from Underweight at Barclays.
  
• Carter's (NYSE: CRI) was upgraded at Goldman to Neutral from Sell.