The Roundhill Generative AI and Technology ETF (CHAT) is an actively managed fund that focuses on AI infrastructure and software. It holds 43 stocks but is pretty top-heavy. Right now, about 21% of the fund's assets are parked in just four companies: Alphabet, Nvidia, Amazon, and Micron. Performance has been strong. Since its inception in May 2023, the ETF is up 146%, compared to a 64% return for the S&P 500 over the same period. The main catch is the cost. The fund has an expense ratio of 0.75%, which is pretty steep compared to a standard passive index fund like Vanguard's S&P 500 ETF at 0.03%. Because it is heavily concentrated in a few high-growth tech names, it also carries a lot more volatility risk. It seems best suited as a smaller addition to a broader portfolio if you are looking to increase your AI exposure.