Tom Sosnoff: A Q&A with the $600 million man behind Thinkorswim

In an era when so many things have gone so wrong on Wall Street, the story of options trader Tom Sosnoff stands out as one thing that's gone right. Sosnoff is co-founder of online brokerage firm Thinkorswim, the top-rated online broker in Barron's and one that's amassed some $3.6 billion in client assets from more than 70,000 trading accounts over the course of a decade.

Sosnoff, who spent 10 years as an options-market maker at the Chicago Mercantile Exchange, created Thinkorswim in 1999 and sold it this year to TD Ameritrade (AMTD)for more than $600 million. Now senior VP of the TD's Trader Group, Sosnoff took a break from trading to chat with DailyFinance about the stock market, investing trends, and what it takes to build a successful company.