Warner Bros. is experiencing a box-office resurgence, with its latest 'Superman' film delivering a strong opening weekend. The success of 'Superman' has propelled Warner Bros.'s stock to a seven-month high, continuing a string of successful movie releases for the studio. This positive performance marks a turnaround for Warner Bros., which has faced challenges in recent years. The strong box office numbers suggest a renewed interest in superhero films and a potential period of sustained growth for Warner Bros. in the entertainment industry.