C3.ai is a popular AI investment, but investors should get to know the company first.C3.ai (AI 0.72%) was a fairly popular artificial intelligence (AI) stock back in 2023 when the AI investment wave began. The two letters in the company's name and ticker symbol prominently tell any investor or client what it specializes in. As a result of the AI investment wave, many people have piled into C3.ai's stock, although the popularity has waned (which is evidenced by its declining trade volume). I think investors ...