Warner Bros Discovery posted a surprise second-quarter profit on Thursday, as the international rollout of HBO Max sent subscriber numbers climbing and blockbuster hits like “A Minecraft Movie” dominated the U.

Thanks to box office hits, studios' revenue hit $3.8 billion, up 55 percent from a year ago, in the second quarter.

Warner Bros. Discovery Inc., the parent of HBO and CNN, swung to a profit in the second quarter, buoyed by a string of successes at the box office.