IPO

What did the Morgan Stanley know about Facebook, when did it know, and who did it tell? Shareholders prepare to sue the bank and Facebook over how the public offering of stock was handled.

On the fourth day of Facebook public trading, shareholders sued the company, Mark Zuckerberg, as well as several banks that underwrote the deal.

The stock tanked 11 percent yesterday, and a technology glitch marred its first day of trading Friday. Some look at the disappointing debut and wonder if something's amiss generally in the tech sector.

Lots of companies were counting on the social network to boost their fortunes when it went public. Just the opposite happened.

The brand new stock in Facebook is down 11 percent right now to $33.11. If day one of trading was seen as a disappointment, day two is so far not winning many new friends at the social networking company.

Facebook's first investors didn't lose their shirts. The company's stock is trading right where it started on Friday: 38 bucks a share. But the initial public offering didn't go exactly as planned. The start was delayed; computer systems locked up; and NASDAQ executives are promising to fix the problems.

After opening later than expected, the first few hours of the Facebook IPO are suggesting that the company might have misjudged the value of its shares.

Reviewing this week's headlines on Wall Street and beyond. This week: The first day of trading for the highly anticipated Facebook stock.

Facebook goes public. What'll that mean for Facebook users?

Facebook leaves investors wondering about its true worth, but it's still leaving Google in the IPO dust.