Thor: Ragnarok breaks box office records with $121 million opening weekend

Thor: Ragnarok had the fourth largest opening weekend of 2017 with $121 million in revenue. The film, from director Taika Waititi, is the the third installment of Marvel's Thor franchise, and the most successful of all of them. Marvel's next release will be Black Panther in February.

Ragnarok also marked a shift in movie theater attendance, with Variety reporting that October 2017 had the worst October ticket sales in over a decade. Watch the trailer for the film above.