Sony Pictures Classics has nabbed worldwide rights to “Equity” on the eve of its premiere at this year’s Sundance Film Festival.

The film puts a female spin on “The Big Short” and “Margin Call” by focusing on a group of women caught up in the world of high finance. The movie centers on an investment banker (Anna Gunn) who gets entangled in a controversial public offering.

James Purefoy (“The Following”), Sarah Megan Thomas (“Backwards”) and Alysia Reiner (“Orange Is the New Black”) co-star. Meera Menon (“Farah Goes Bang”) directs from a screenplay by Amy Fox.

Fox wrote the story with Thomas and Reiner. Both women serve as producers.

The deal was negotiated on behalf of the producers by CAA. This is the second Sundance deal for Sony Pictures Classics. Last weekend, the indie label bought “Eat That Question – Frank Zappa in His Own Words,” a documentary about the iconoclastic musician.