Since Max is owned by Warner Bros. Discovery, it is the natural streaming home for the Insidious franchise. Strangely enough, only the first two Insidious films are currently streaming on Max. Insidious: Chapter 3 is only streaming on Tubi, and Insidious: The Lost Key is not streaming at all.
Watch Insidious: Chapter 2 (HBO) - Stream Movies | HBO Max.
