Hedge fund manager Bobby Axelrod is the main character of Billions, a television drama series created by Brian Koppelman, David Levien, and Andrew Ross Sorkin for Showtime. Billions follows Axelrod (played by Damian Lewis till 2021), as he increases his wealth and power in the world of finance often using aggressive tactics to maximize his fortune. Set in financial hubs such as New York and Connecticut, the Billions cast is made up of Paul Giamatti, Maggie Siff, David Costabile and others.