Through Monday's close, the S&P 500 has had 36 days of drawdowns between 3% and 5% and 76 days of drawdowns greater than 5%. The incidence of more extreme 5% drawdowns is already significantly higher than in 2016, which had 51 days of declines of 5% or more below the index's most recent high. As of Monday's closing bell, the index was down 6.1% from its latest high on Sept. 20. There have been 19 highs during 2018, compared to the 62 hit in 2017. Last year's bull run had little time for pullbacks; during the year there were no periods of declines greater than 3%.
Through Monday, the index was up 2.9% year-to-date after giving up much of its 2018 advances in the first weeks of the fourth quarter.