This artificial intelligence (AI) software specialist will be added to the benchmark S&P 500 index after years of robust growth.The S&P 500 is the best overall benchmark of the U.S. stock market, made up of the 500 largest companies in the country. Given the scope of its member companies, it is considered by many as the most dependable gauge of overall stock market performance. To be included in the S&P 500, companies must meet the following requirements:Be a U.S.-based companyHave a market cap of at least ...