“Thor: Ragnarok’’ made more than $122 million at the box office last weekend, which means it’s technically Matt Damon’s highest grossing opening-weekend hit. Sort of.

The locally bred actor has a cameo in the superhero film. In an early scene, he plays a thespian performing as Tom Hiddleston’s character Loki in a play. The scene also features “Thor’’ star Chris Hemsworth’s brother Luke as an actor playing Thor, and Sam Neill playing Anthony Hopkins’s Odin.

No one ran out to see “Thor’’ because of Damon, of course, so it doesn’t add to the actor’s box-office value. Damon’s true highest grossing weekend debut was “The Bourne Ultimatum,’’ which made more than $69 million at the domestic box office in 2007, according to Box Office Mojo, which tracks these stats.