Stock-correction speculation mounts a year after "flash crash"

Show volatility of the Dow Jones Industrial Av...                                                 
The Dow Jones industrial average plunged nearly 1,000 points in a few minutes almost one year ago. The "flash crash" hit investor confidence and raised concerns for regulators. The Dow has since rebounded, but concerns remain. Some investors, analysts and strategists said the market is likely to face a significant sell-off. Full sotry here