Just try to find a stock market year like 2018, because you won't

This year has already been remarkable for the stock market because the moves seen in 2018 are unlike any in the past, according to an analysis by Bespoke Investment Group. “We have done this type of analysis many times over the years, and usually when we run it, the years that have the most similarity to the year in question have correlation coefficients of +0.85 or even greater than 0.90,” analysts at Bespoke said. The most similar year to 2018 in the stock market is 1942, with a correlation coefficient of just 0.533, Bespoke found.