Billions is an American television drama series created by Brian Koppelman, David Levien, and Andrew Ross Sorkin, starring Paul Giamatti and Damian Lewis, that premiered on Showtime on January 17, 2016. The series is loosely based on the activities of Preet Bharara, the former U.S. Attorney for the Southern District of New York, and his legal battles with hedge fund manager Steve Cohen of S.A.C. Capital Advisors. In Season 2, it also incorporates loosely the cases involving Treasury bond auction market manipulation conduct of Salomon Brothers, including the roles of CEO John Gutfreund and bond trader Paul Mozer, in 1991.
Three seasons of Billions have aired. On April 26, 2018, Showtime renewed the series for a fourth season, which premiered on March 17, 2019.