One of the most popular Arcade Fire shows of 2018 was Sunday July 8th at American Family Insurance Amphitheater. Interest for that show peaked in the weeks leading up to the event and ticket prices declined during that time.
Across all Arcade Fire shows in 2018, interest was strongest right when the shows were announced and tickets went on sale. Meanwhile, ticket prices typically fell about 5 - 10% from the date a show was announced until the days leading up to the show.