Marcel Telles, the billionaire Brazilian investor who cofounded buyout firm 3G Capital Inc., donated his stake in brewer Anheuser-Busch InBev SA to his son Max in a major step toward succession planning.

Telles’ stake in AB InBev, which he helped build through a series of deals with his partners Jorge Paulo Lemann and Carlos Sicupira, is worth about $6.1 billion, according to the Bloomberg Billionaires Index.