Batista controls EBX, an empire of interlinking commodity startups. The single most valuable company is publicly traded OGX, which started
producing oil in January 2012. Among his closely held ventures are Colombian gold explorer AUX, Rio de Janeiro real-estate developer REX and technology and sports-management firms.
The 23-story Serrador building rises gracefully in downtown Rio de Janeiro, a rounded granite-and- glass art deco masterpiece that conjures the opulence of another era. Completed in 1944 and named for Spanish cinema-house promoter Francisco Serrador, it once held a luxury hotel with a nightclub that attracted a mix of Rio elites and visiting American movie stars.