One market meme this year is how closely the the S&P 500 has resembled the same path it took in 2011. Versions of the chart below have been published nearly everywhere.
Running daily 2015 year-to-date market performance against all historical years will tell us if 2011 really is the closest to the current year’s activity. S&P 500 annual performance since 1928 is plotted below, with 2011 and 2015 highlighted.
Indeed, we find that 2011 has the highest correlation to 2015 of all historical years.