IBM's shares plunged 7% Monday after a disappointing earnings report. Can tech's ultimate survivor transform itself one more time?

Last week's tumultuous week in the stock market sets the stage for yet more nervousness and hand-wringing as a fresh set of earnings and economic data are due to be released.

Sadly, there may be no safe havens this time. Stock investors typically turn to dividend payers and "low-volatility" stocks in rocky times. But those investments have gotten pricey.

Volatility is back with vengeance, and it's being felt throughout the financial markets.

By reputation, October is the scariest month on Wall Street. In reality, this month tends to be either very good or bad for the market. Which one will it be this time around?

Berkshire Hathaway CEO Warren Buffett announced plans to license his company's brand to real estate agencies in Europe and Asia, adding yet another way in which Berkshire Hathaway interacts with everyday consumers.