Analyst upgrades:

• UBS believes US airlines estimates are too low and will move higher. The firm upgraded AirTran (NYSE: AAI), AMR Corp (NYSE: AMR), Continental (NYSE: CAL), Delta (NYSE: DAL) and Northwest (NYSE: NWA) to Buy from Neutral and JetBlue (NASDAQ: JBLU) to Neutral from Sell.
  
• JMP Securities upgraded DealerTrack (NASDAQ: TRAK) to OUtperform from Market Perform as they believe 2H08 guidance represents a floor and that 2009 estimates are achievable, among other reasons.
• Potash (NYSE: POT) and Mosaic (NYSE: MOS) were raised to Buy from Hold at Soleil.
  
• Argus upgraded Seagate (NYSE: STX) to Buy from Hold on Friday.

• Jefferies downgraded Citrix Systems (NASDAQ: CTXS) to Underperform from Hold as they do not see a catalyst for the company to grow into 2009 consensus estimates. The firm lowered their target price to $25 from $32.
  
• Citigroup said following Lehman's (NYSE: LEH) bankruptcy, they expect a distressed-sale of American International's (NYSE: AIG) MBS portfolio, resulting in the worst quarter yet for the company. Shares were cut to Hold from Buy.
• D.R. Horton (NYSE: DHI) was downgraded to Sell from Hold and Pulte Homes (NYSE: PHM) was downgraded to Hold from Sell at Citigroup.
  
• Merrill downgraded Goldman Sachs (NYSE: GS) to Neutral from Buy and JP Morgan (NYSE: JPM) to Underperform from Neutral.

Analyst upgrades:

• Oppenheimer upgraded Inter Parfums (NASDAQ: IPAR) to Outperform from Perform on valuation and increased comfort with the company's outlook after meeting with management.
  
• Deutsche Bank raised Covidien (NYSE: COV) to Buy from Hold on the company's solid execution and ongoing restructuring, which they believe will drive EPS higher. The firm raised its target to $63 from $51.
• Regions Financial (NYSE: RF) was upgraded to Outperform from Market Perform at Keefe Bruyette.
• American Eagle (NYSE: AEO) was lifted to Buy from Neutral at Banc of America.
  
• Goldman raised Healthways (NASDAQ: HWAY) to Neutral from Sell.

Analyst downgrades: