Now Playing: 10-15-12 Marketplace

Former Fed chairman Paul Volcker discusses his tenure and what concerns him today about financial markets, along with financial historian William Silber, who wrote a new book called "Paul Volcker: The Triumph of Persistence." The Nobel Prize in economics went to two Americans for their idea known as the matching theory. Japan’s Softbank Corp. has announced its 70 percent investment in U.S. mobile carrier Sprint Nextel Corp, making it the largest overseas buy from a Japanese firm. Ohio Gov. John Kasich is closing on a deal to lease the Ohio turnpike for $1 billion. And Gina Keating, the author of "Netflixed: the Epic Battle for America's Eyeballs," offers a deeper look at the company.