Company: MetroPCS Communications Inc.

The market for equities has gone through numerous crises, bubbles and ups and downs, but when an initial public offering comes, it can create lots of excitement for investors and generate perhaps billions of dollars for the company.

Corporations hold large amounts of cash for a variety of reasons, including speculation on the price of assets, corporate acquisitions, future investments or even as a precaution against market uncertainty.

Stocks abruptly turned mixed in the final seconds of trading Monday, with the Dow ending in negative territory, while the S&P 500 still managed to log its best close since June 2008. Still, the Dow and the S&P 500 are both on track to posting their best February since 1998.

Sprint's board of directors, after months of work on a deal to acquire pre-paid wireless company MetroPCS, has decided to walk away from the deal, according to CNBC sources.

Rethink possible. That is both AT&T’s marketing slogan and an apt summary of the challenges it faces now that its planned $39 billion purchase of T-Mobile USA looks increasingly doubtful.  The New York Times reports.