Stocks are now priced at a level topped only once before, at the 2000 dot-com peak
American stock prices have climbed to a valuation extreme matched only once in modern history, during the dot-com frenzy that peaked in March 2000. Federal Reserve data tracking the S&P 500 index and the total market value of U.S. corporate equities both point to the same conclusion: the gap between what investors are paying for…