San Diego Comic-Con concluded its 2026 edition on Sunday, capping four days of studio panels, trailer debuts and casting announcements at the San Diego Convention Center. Organisers said the event ran near capacity across its main halls.

Amazon's 'The Lord of the Rings: The Rings of Power' emerged as the convention's dominant story, premiering its Season 3 trailer in Hall H and confirming that Simon Pegg had joined the cast to voice the Balrog. The footage, showing Sauron forging the One Ring, circulated widely online throughout the weekend, according to Deadline.

Marvel Studios and DC Studios anchored Saturday's Hall H programming with extended footage and title reveals. Sunday's schedule shifted to fan-focused panels, artist alley sessions and closing-day autograph events, while Warner Bros. and Amazon MGM Studios used the convention to build anticipation for autumn releases.

Studio executives and publicists said Comic-Con remained a critical marketing platform despite growing competition from streaming reveals and social media rollouts. An EY-IMI report cited by industry press this week noted that discovery of music and entertainment increasingly occurs through short-form video, reshaping how studios amplify convention moments.

Attention now shifts to how the weekend's trailers perform in view counts and to release-date positioning, with 'The Rings of Power' Season 3 and DC's upcoming slate among the titles carrying the strongest post-convention momentum into the second half of 2026.