The modestly budgeted Lionsgate release had been pegged for an opening in the ballpark of $10 million.
Roberts plays the boys mother, and Owen Wilson portrays his father.
That brings the domestic total to $247.4 million, and the worldwide total to $738.1 million.
Clay Enos/Warner Bros. Pictures/DC Comics
The film, which has received mixed reviews, will expand into about 1,500 theaters Wednesday.
According to ComScore, overall box office is down 4.3 percent year-to-date.
Check out the Nov. 17-19 figures below.
Dale Robinette/Lionsgate
