Cathie Wood of Ark Invest has been selling Palantir stock, despite it being the best-performing stock in the S&P 500 this year.The artificial intelligence (AI) narrative is entering a new chapter, and it's time for the "Magnificent Seven" stocks to move over. Throughout 2024, investors have been presented with a host of new, emerging players that are working alongside big tech and have proven they are here to compete in the AI realm.In my eyes, Palantir Technologies (PLTR -0.15%) has become the most interes ...