Buying these stocks gives you a great chance to beat the benchmark.The major U.S. stock market indexes are officially in overheated territory thanks to enthusiasm for artificial intelligence (AI). Since the end of 2022, the most popular benchmark, the S&P 500 index, has soared about 51% to a rich valuation that we've not seen since right before some severe market crashes.If we add up earnings from the past 10 years, the average stock in the S&P 500 index is trading at a cyclically adjusted price-to-earnings ...