Gyllenhaal debuted on Broadway in Payne's "Constellations" at the Samuel J. Friedman Theatre opposite Ruth Wilson, also in her Broadway debut. The production opened in January 2015 and closed in March of the same year. That same year, he starred in the comedy "Accidental Love", which was filmed in South Carolina with Jessica Biel, as well as Antoine Fuqua's sports drama "Southpaw". Writing for "The Independent", Geoffrey Macnab called his portrayal of a boxer in "Southpaw" "plausible" and complimented his "emotional vulnerability", despite an unoriginal plot. He then portrayed American mountaineer Scott Fischer in Baltasar Kormákur's "Everest", based on the 1996 Mount Everest disaster; the film was a commercial success, grossing $203 million worldwide. Finally, he appeared in Jean-Marc Vallée's comedy-drama "Demolition," playing an investment banker Davis Mitchell, who rebuilds his life after losing his wife. "The Village Voice"s Bilge Ebiri praised his performance, writing, "He nails Davis's boyish curiosity, the quiet, wide-eyed uncertainty of someone discovering the world for the first time." He also served as a jury member for the main competition of the 2015 Cannes Film Festival.