For investors, things just about couldn’t be better. The benchmark S&P 500 (SNPINDEX:^GSPC) has more than doubled since hitting its coronavirus pandemic low on March 23, 2020, and it’s, thus far, gone the entirety of 2021 without so much as a 5% correction.
Unfortunately, a number of historical metrics would suggest that this rally isn’t sustainable, and that a stock market crash or sizable correction could be on the way.
History may prove unkind to the stock market in the near term
For example, even though the internet has democratized trading and helped to expand price-to-earnings