History suggests rally may slow for US stocks in 2020

However, investors who are hoping the rally will continue charging ahead through next year may be disappointed. The S&P 500 has returned an average of 6.6% in the year following a rally of 20% or more since 1928, slightly below the 7.6% return in all years, according to research from Bespoke Investment Group.

NEW YORK: The outsized rally in the US stock market this year may give way to a more muted performance in 2020 if history is any guide.

The benchmark S&P 500 is up nearly 28% for the year, which if the market closed this week for the year, would mark the second-best annual performance for the index since 1997.