In the critically acclaimed film 'Margin Call', Penn Badgley showcases his acting range by portraying a young analyst named Seth Bregman. The movie takes place during the early stages of the 2008 financial crisis and follows the employees of an investment bank as they navigate the ethical and moral dilemmas surrounding the impending collapse of their firm. Badgley's performance in 'Margin Call' is praised for its authenticity and emotional depth, contributing to the overall success of the film.