Yup, and TS4 is tracking to opening over $200M. I think a better time to release this movie could've been over the Holidays. They could've used the release date that they used for The Grinch last year (although I believe Maleficent 2 is coming out on that date this year). Since it's an animated feature, it likely would've played strong through the Holidays, with the only other direct competition eventually becoming Frozen 2.
Tbh, the more ideal spot to release the movie would've been Feb/March, but that would've undercut HTTYD (Although I think HTTYD could've done well as a Summer release).