The artificial intelligence (AI) buildout is far from over.Checking up on what billionaire hedge fund managers have in their portfolios can be a smart idea for investors. This information is publicly released 45 days after a quarter ends through a Form 13F. While this doesn't give up-to-date information on what these hedge fund managers are doing, it at least informs investors on some potential solid stock picks.One billionaire I follow is Philippe Laffont of Coatue Management. He has had some incredible su ...