Analyst upgrades:

• Keefe Bruyette upgraded shares of Colonial Bancgroup (NYSE: CNB) to Outperform from Market Perform on valuation following the recent weakness and believes the company will be eligible to receive TARP funds. Morgan Stanley believes the company's valuation adequately reflects risk to the loan portfolio; the firm raised shares to Equal Weight from Underweight.
• Merrill upgraded Ericsson (NASDAQ: ERIC) and ASML Holding (NASDAQ: ASML) to Buy from Underperform and believes their valuation reflects the worst-case for bad news.
• Oppenheimer upgraded Trimble Navigation to Outperform from Perform on valuation as they believe the company's long-term growth story is intact.
• Celestica (NYSE: CLS) was upgraded to Sector Outperformer from Sector Performer at CIBC.
• KeyCorp (NYSE: KEY) was added to Goldman's Conviction Buy List.
• Wachovia raised EastGroup Properties (NYSE: EGP) to Outperform from Market Perform.

• UBS cut Barclays (NYSE: BCS) to Neutral from Buy as they believe capital raises could negatively impact earnings and that the dividend is likely to be cut.
• JP Morgan downgraded Discovery Holdings (NASDAQ: DISCA) to Underweight from Neutral based on valuation and the deteriorating economic outlook.
• Friedman Billings downgraded shares of Janus Capital (NYSE: JNS) to Underperform from Market Perform and lowered its target to $7 from $23 as they see further risk to the downside following the company's weaker-than-expected results.
• LKQ Corp (NASDAQ: LKQX) was cut to Sector Perform from Outperform at RBC Capital.
• Affymetrix (NASDAQ: AFFX) was lowered to Sell from Hold at Deutsche Bank.
• RightNow Tech (NASDAQ: RNOW) was downgraded at Baird to Neutral from Outperform.

DealBook reports that a somewhat surprising cast of characters is arriving at the annual Allen & Co. Sun Valley, media investment conference.

Of all the investment conferences I know, due to its beautiful setting, leading players, and inevitable deal doing, this is the one I most regret not being able to attend. Regrettably, BloggingStocks is not sending me there. (Although to be fair, I never asked because I didn't know about it until today.) However, I can join everyone else in the world and follow along with those who are fortunate enough to attend.

Here's the list of some of the notable characters who have arrived so far: