Key PointsSpaceX's acquisition of xAI before going public was a smart move.Palantir's growth rate is projected to slow next year.10 stocks we like better than Space Exploration Technologies › Artificial intelligence (AI) investing is the most popular theme in the stock market right now. It's easy to understand why: Several companies are growing at incredible paces and could wind up being some of the major tech players of the future. Given how bi…