KEVIN ARQUIT
Simpson Thacher & Bartlett

Simpson Thacher & Bartlett partner Kevin Arquit has landed at the top among antitrust lawyers with a headline-grabbing caseload in recent years. Arquit, 55, was on the Simpson Thacher team advising Sirius Satellite Radio in its deal with XM Satellite Radio, a merger that created plenty of noise as consumer groups and some broadcasters lined up to oppose the deal back in 2007. “There was a lot of concerted opposition and lobbying to get the Justice Department to stop this merger,” said Arquit, 55, a partner at New York-based Simpson Thacher since 2003. In 2008, the U.S. Department of Justice Antitrust Division ended its investigation and found the $4.9 billion deal wasn’t likely to substantially lessen competition.