Hollywood kicked off 2026 with “Avatar: Fire and Ash” atop the box office for the third straight week and with hopes for a blockbuster-filled year after a disappointing 2025. In three weeks of release, “Fire and Ash” has cleared $1 billion worldwide. The third chapter in James Cameron’s Pandora epic collected $40 million over its third weekend in North American theaters, according to studio estimates Sunday. But over the holiday week, it wasn’t just about the weekend ticket sales. The whole week was a lucrative one for Hollywood, with most schools still out. What drove ticket sales, beyond “Avatar”? Sydney Sweeney, Timothée Chalamet and “Zootopia 2.”