F.B.I. Makes Insider Trading Arrests Federal authorities announced insider trading charges against seven people on Wednesday, accusing them of earning nearly $62 million illegally trading on shares of Dell. The Federal Bureau of Investigation arrested four people across the country as part of the case, an escalation of the government's aggressive insider trading investigation. The three other people named in the criminal complaint - Spyridon Adondakis, a former Level Global technology analyst known as Sam; Jesse Tortora, a former Diamondback Capital Management analyst; and Sandeep Goyal, a former junior analyst at Neuberger Berman - are cooperating with the investigation. Anthony R. Chiasson, co-founder of the Level Global hedge fund, surrendered in New York after F.B.I. agents initially went to his apartment in Manhattan but he was not home, a person briefed on the matter said. The F.B.I. also arrested Todd Newman, a former trader at Diamondback in Boston, and Jon Horvath, who worked at Sigma Capital Management, a unit of SAC Capital Advisors, Steven A. Cohen's powerhouse hedge fund. In Los Angeles, federal authorities arrested Danny Kuo, a vice president and fund manager at the Whittier Trust Company, according to the person briefed on the matter. He previously worked at Merrill Lynch, JPMorgan Chase and Bear Stearns, according to an online profile. A representative for Whittier did not immediately respond to a request for comment. The Securities and Exchange Commission is also expected to announce its own civil enforcement action tied to the case. Mr. Chiasson was perhaps the most prominent of those arrested. He founded Level Global, a fund based in Greenwich, Conn., with David Ganek in 2003. Both had previously worked at SAC Capital Advisors. Representatives of SAC and Diamondback declined to comment. Level Global and Diamondback were first swept up in the federal investigation after federal agents raided their offices in November 2010. Level Global, which at its peak managed about $4 billion, shut down last year in the wake of the raids. The United States attorney's office in Manhattan, led by Preet S. Bharara, has won 50 insider trading convictions in the last two years, the most prominent being the 2011 conviction of the hedge fund titan Raj Rajaratnam, former chief of the Galleon Group, who reported to prison last month to begin serving an 11-year sentence.