Federal regulators are trying to piece together what happened in the stock market Wednesday morning. Just after the opening bell, the prices of dozens of stocks began to gyrate up and down. The swings were soon traced to a software glitch at a New Jersey brokerage firm called Knight Capital. NPR's Jim Zarroli joins Steve Inskeep with more.
The Swing Back After Stock Market Glitch
By editor • Aug 2, 2012