The Youngest Stock Swindler.

• Position: Brief Article

Like many 15-year-olds, Jonathan Lebed frequented WWF wrestling matches, went bowling, cheered the Mets, and booed the Yankees. Unlike most 15-year-olds, he used the Internet to manipulate the stock market, racking up almost $273,000 in illegal gains.

Last month, the high school junior from Cedar Grove, New Jersey, became the first minor ever sued by the Securities and Exchange Commission. Federal officials say he bought obscure stocks, hyped them in a barrage of false e-mails to Web bulletin boards, then sold...