• Oppenheimer upgraded Savient Pharmaceuticals (NASDAQ: SVNT) to Perform from Underperform after the FDA's Arthritis Advisory Committee voted 14-1 in favor of approving Krystexxa for gout.
• Banc of America/Merrill upgraded Texas Instruments (NYSE: TXN) to Buy from Underperform and raised its target to $27 from $18 based on expectations that margin expansion will be higher than Street expectations.
• UBS said Nvidia (NASDAQ: NVDA) has limited downside risk given the improved outlook for the graphics processor market and professional solutions business. Shares were upgraded to Neutral from Sell and its target was raised to $11.50 from $8.
• BHP Billiton (NYSE: BHP) was upgraded to Outperform from Neutral at Macquarie.
• Neutral Tandem (NASDAQ: TNDM) was upgraded to Outperform from Neutral at Baird.
• Central Garden & Pet (NASDAQ: CENT) was upgraded to Buy from Neutral at SunTrust.

Neutral Tandem (NASDAQ: TNDM) provides third-party interconnection services to competitive telecommunications carriers. In a nutshell, TNDM helps wire-line, wireless and broadband customers talk to each other -- even if they all pay their bills to different companies. Neutral Tandem offers services in more than 60 U.S. metropolitan markets and is a critical part of our nation's communications network. The company's customers include Sprint Nextel, Comcast Cable and AT&T.

Neutral Tandem earned $9 million or 27 cents per share in the first quarter, compared with $4 million or 12 cents per share in the year-ago period. TNDM's earnings beat estimates by four cents for a 17.4% earnings surprise, sending shares up 15.6% in just the week following the announcement!

Small-cap stocks are a GREAT place to start if you're serious about rebuilding your wealth and securing your financial future.

But what makes small-cap stocks so spectacular?

The bear market stripped analysts from small stocks -- hardly anyone is covering them anymore. This creates wonderful pricing anomalies and gives the individual investor a significant edge.

• KeyBanc upgraded Greenbrier (NYSE: GBX) to Buy from Hold as it believes the company has options to forestall covenant violations or bankruptcy, event if conditions deteriorate further.
  
• Friedman Billings upgraded Whole Foods (NASDAQ: WFMI) to Market Perform from Underperform citing low expectations, favorable FTC settlement, progress on cost cutting, and valuation.
  
• JP Morgan believes First Merit (NASDAQ: FMER) is one of the best positioned Midwest banks to weather the storm and notes its compelling valuation and capital levels. The firm upgraded shares to Overweight from Neutral.
• Coca-Cola Enterprises (NYSE: CCE) was raised to Buy from Neutral at Goldman.
  
• Newell Rubbermaid (NYSE: NWL) was upgraded to Buy from Neutral at Banc of America/Merrill.
  
• Compass Minerals (NYSE: CMP) was lifted to Outperform from Perform at Oppenheimer.