Analyst upgrades:

• Goldman upgraded Bed Bath & Beyond (NASDAQ: BBBY) to Buy from Neutral based on valuation and a potential margin rebound at Linens N' Things.
  
• Citigroup upgraded Rockwell Automation Inc. (NYSE: ROK) to Hold from Sell on valuation and believes expectations have been reset to a reasonable level. The company's target was lowered to $27 from $33.
  
• Friedman Billings upgraded shares of Ceradyne (NASDAQ: CRDN) to Outperform from Market Perform on valuation following the recent weakness and thinks the Army will move forward with a larger XSAPI procurement in FY09. The firm raised their target to $30 from $26.
• Goldman added Wyeth (NYSE: WYE) to the Conviction Buy List.
  
• Equity Residential (NYSE: EQR) was upgraded to Buy from Neutral at UBS.
  
• Analog Devices (NYSE: ADI) was raised to Overweight from Equal Weight at Morgan Stanley.

Analyst downgrades:

Everything's big in Texas. Look at the state's Teacher Retirement System (TRS). In all, it has about $112 billion in assets.

Interestingly enough, the pension fund wants to devote about a third of its assets to alternatives, such as hedge funds and private equity funds. This is according to a story in the Wall Street Journal [a paid service].

Yes, when you take a look a the SEC filings of the Blackstone Group (NYSE: BX), Fortress (NYSE: FIG), and KKR, you will see that alternative investment can post strong returns.

Despite this, the TRS strategy is certainly gutsy. Keep in mind that alternative investments can be fairly illiquid. What if it gets tougher to do IPOs or get sound exits on these investments?

Or, what if there is a meltdown, as seen with the subprime hedge funds at Bear Stearns (NYSE: BSC)?

Even the pros can make big blunders. And it could be bad news for pensioners.

On the other hand, TRS's move is certainly good news for the private equity world. Simply put, there's likely to be many more assets under management -- and that means lots of juicy fees.

Tom Taulli is the author of various books, including the Complete M&A Handbook and the EDGAR-Online Guide to Decoding Financial Statements.