Evenly split? From my understanding, the first two or three weekends, the studio receives 70-90% of the revenues depending on the contract. It's after that it becomes around 50%, maybe even lower (in favor of the theater) since a film will be drawing less viewers than that by then usually and the theater needs compensation for still devoting screenings to it.
Thunderbolts, like most movies, made the vast majority of its money in the first two weekends.
But honestly, it's at this point you realize there's too many variables to ever figure out if the film did well or not barring a MASSIVE underperformance or success at the theater.
I mean, it's funny everyone is focusing on Thunderbolts when it's the current 300-400 million production budget film that is looking PRETTY BAD in terms of how it's going to end up performing.
www.boxofficemojo.com
That's definitely not a knock on the film, it's great, and it sucks it's not doing well (the film's budget apparently went significantly up due to unfortunate delays during filming). But this is why a film's subjective quality should not be defined by its box office performance. And for those who want to claim otherwise, I guess they think the Minecraft movie and the Lilo and Stitch remake are among the best movies this year……