CHI Health Center Omaha is an arena and convention center in Downtown Omaha, Nebraska, United States. Operated by the Metropolitan Entertainment & Convention Authority (MECA), the 1.1-million-square-foot (100,000 m²) facility has an 18,975-seat arena, a 194,000 sq ft (18,000 m²) exhibition hall, and 62,000 sq ft (5,800 m²) of meeting space. The arena hosts basketball and hockey games, professional wrestling events, concerts, and the annual shareholders' meeting of Omaha-based conglomerate Berkshire Hathaway, usually held on the first Saturday of May.