Elio' brought in $21 million domestically over its opening weekend — Pixar's worst showing ever.Pixar's last original movie, "Elemental," was previously its worst opening.Despite the poor opening, one theater executive thinks "Elio" could have legs this summer.

Disney's animated adventure 'Elio' failed to lift off at the box office, underscoring Pixar's continued struggle to launch original films.

Pixar's Elio opened with just $21 million at the box office, the studio’s weakest debut ever, and Wall Street took notice. While critics were relatively kind (84% on Rotten Tomatoes), the financial stumble wasn’t just about the movie itself.