MOST NOTEWORTHY:

• Oppenheimer upgraded shares of Mattel Inc (NYSE: MAT) to Buy from Neutral citing valuation, strong 2008 product line-up, and expected organic sales growth.
  
• Goldman upgraded shares of Volvo (NASDAQ: VOLV) to Buy from Neutral on valuation as they believe the company's prospects for earnings are not priced into shares. Volvo was added to the firm's Conviction Buy List.
  
• PMI Group's (NYSE: PMI) rating was raised to Outperform from Market Perform at Piper Jaffray on valuation.
  
• Citigroup upgraded shares of Mosaic Company (NYSE: MOS) to Hold from Sell to reflect their increased commodity price forecasts.
  
• Diamond Foods Inc (NASDAQ: DMND) was upgraded to Buy from hold at BB&T Capital on valuation.

• Bear Stearns upgraded Diana Shipping Inc (NYSE: DSX) to Outperform from Peer Perform.
  
• Morgan Stanley upgraded Telephone and Data Systems Inc (NYSE: TDS) to Equal Weight from Underweight.
  
• Targa Resources Partners (NASDAQ: NGLS) was upgraded to Outperform from Market Perform at Wachovia.
  
• Steelcase Inc (NYSE: SCS) was upgraded to Neutral from Sell at Goldman.

Analyst upgrades: MAT, VOLV, PMI, MOS and DMND originally appeared on BloggingStocks on Fri, 21 Sep 2007 10:30:00 EST. Please see our terms for use of feeds.