Parsons (PSN) stock has gained more than 2 times the S&P 500's return since its initial public offering (IPO) in 2019.Artificial intelligence (AI) stocks have been in huge demand from investors since last year. The primary catalyst for the AI stock frenzy was OpenAI's release of its ChatGPT chatbot in late 2022, which showcased the amazing capabilities of generative AI.This big boost in demand for AI stocks has significantly driven up the prices and valuations of many of them. The high valuations of some AI ...