Fox Corp. is buying streaming platform Roku in a cash-and-stock deal valued at approximately $22 billion.

On today’s episode of “Daily Variety” podcast, in our Box Office segment, Variety ’s Rebecca Rubin weighs the opening weekend of Steven Spielberg’s “Disclosure Day.”

But shares of Fox sank more than 15 percent near midday Monday, a drop analysts said reflected concerns about the deal's dilutive impact on existing equity as well as strategic questions about the dea...