Artificial intelligence (AI) has been a hot investing theme for over a year now, since ChatGPT first arrived on the scene in November 2022. Since then, many companies in and outside of tech have been working on developing their AI capabilities to take advantage of next-gen technologies. And valuations have also risen with any stocks able to cash in from that.Nvidia (NVDA -0.12%) is an easy example of that, with its market cap hitting more than $2 trillion this year. The company has been achieving strong top ...