To be fair, Powell isn't the first Fed chair to bring to light the priciness of the stock market at specific moments in time. In December 1996, former Fed Chair Alan Greenspan delivered what became known as his "irrational exuberance" speech, highlighting the rapidly rising prices of equities on the heels of the internet revolution. Nevertheless, it took more than three years after Greenspan's speech before the S&P 500, Dow Jones Industrial Average, and Nasdaq Composite, respectively, reached their peaks.Wh ...