Blumhouse and Atomic Monster have officially crossed $1 billion in combined worldwide box office for 2026, Deadline broke this week, and the year isn't done with them yet. The tally spans four releases, three of which we've covered wall to wall here at FearHQ.
Obsession earned its share the old-fashioned way: we watched it claw back the No. 1 spot in its FOURTH week in theaters, the leggy word-of-mouth run modern horror almost never gets. A Mummy sequel is already moving with Brendan Fraser and Rachel Weisz in the mix, and Obsession breakout Michael Johnston is in talks to join it.
The receipts behind the milestone, as of this week:
- Obsession - past $501 million worldwide
- Backrooms has climbed past $396 million after the third-biggest horror opening of all time
- The Mummy, Lee Cronin's reboot, has cleared $90 million
- Insidious: Out of the Further just opened to $60 million globally on an $18 million budget
Backrooms' $118 million global opening was the biggest in A24's history, and the movie is a true team-up: A24 distributes, with Atomic Monster, Chernin Entertainment, and 21 Laps producing, and James Wan and Shawn Levy among the names on the credits. Director Kane Parsons was 16 when his Backrooms shorts started terrifying YouTube in 2022. Four years later, that creepypasta is one of the biggest movies of 2026. Jason Blum and James Wan have both credited this new generation of young directors, name-checking Parsons and Obsession's Curry Barker, for powering the run.
The new Insidious carries a franchise story of its own: its 70% Rotten Tomatoes audience score is the highest in the series' history, beating The Red Door's previous record, even if opening-night crowds graded it a C+ on CinemaScore. Directed by Jacob Chase with franchise anchor Lin Shaye back once more, the sequel opened to $60 million globally on an $18 million budget, which means it was in the black before its second weekend started. Six films in, the Insidious franchise has never once lost money, which is why it keeps rising from the Further no matter how many times the story wraps up.
Why does the milestone matter beyond bragging rights? Because horror keeps proving it's one of the most reliable bets in theatrical. These are $18 million and $30 million productions posting nine-figure grosses while $200 million tentpoles fight for breakeven. We dug into that math when Evil Dead Burn flopped while Backrooms and Obsession soared: the genre's wins keep coming from originality and word of mouth, and 2026's slate has had both in stacks. It's also a comeback story. Blumhouse limped through 2025, and its CEO bluntly admitted M3GAN 2.0's genre shift was a mistake after that sequel short-circuited. One year later, the 2026 slate went back to straight horror, and the audience showed up. This is also the payoff for the 2024 merger that brought James Wan's Atomic Monster under the Blumhouse roof, a pairing some skeptics called redundant at the time. Blumhouse built its empire on Paranormal Activity and Get Out; Wan's shop delivered the Conjuring universe and M3GAN. Together they hold most of modern horror's biggest franchises, and a billion dollars in a single year is a loud rebuttal to the skeptics.
And the year has one big release left on the calendar. Other Mommy, Rob Savage's adaptation of Bird Box author Josh Malerman's Incidents Around the House, puts Jessica Chastain in a dual role as a mother and the thing pretending to be her, her first horror lead since It Chapter Two, opening October 9th through Universal, right in the heart of spooky season, when horror does its biggest business. And that's before Zach Cregger's Resident Evil opens next month.
A billion dollars, most of it for original ideas, and Halloween is still two months away!
Which 2026 horror hit earned its money most, in your book?
Drop your picks in the comments!
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