These stocks are poised for more gains in 2024 and beyond.It's a smart idea to consider what stocks billionaire investors are buying (or selling), and there's no better investor to follow in this regard than Warren Buffett, who has built a mountain of wealth for Berkshire Hathaway shareholders.Three Motley Fool contributors recently combed through Berkshire's holdings to find three stocks that are screaming buys right now. Let's see why they selected Mastercard (MA 0.30%), Louisiana-Pacific (LPX 0.84%), and ...