Granted, most of that came from the foreign box office, and that could be where Joker falls short.
Aquaman went on to become DC’s first $1 billion baby, with $1.148 billion worldwide.
I’m not sure a comparison to Aquaman is fair, beyond both being DC movies, but just for reference, Aquaman had a not-too-impressive domestic opening of $67,873,522.
Joker had a much more impressive opening of $96,202,337.