About BTIG. BTIG is a global financial services firm specializing in institutional trading, investment banking and related brokerage services. With an extensive global footprint and more than 475 employees, BTIG, LLC and its affiliates operate out of 13 cities throughout the Americas, Europe and Asia Pacific.elebrities committed to join BTIG this year so far include Eli Manning, Mark Cuban, Shaquille O’Neal, Tom Coughlin, Joe Girardi, Allan Houston, Petra Nemcova, Jeremy Roenick, Bobby Valentine, Woody Johnson, Victor Cruz, and Beth Ostrosky Stern.