All three major indexes shed more than 2 percent on Monday, as the S&P 500 notched its lowest close in 14 months. The tech-heavy Nasdaq is down 2.2 percent this year, and the small-cap Russell 2000 index has lost more than 20 percent from its late-summer high, officially putting it in bear market territory.
The Dow Jones industrial average and the S&P 500, both down more than 7.5 percent this month, are on track for their worst December performances since 1931, in the pit of the Great Depression.
Trump was silent on the latest market down day, extending his pattern of avoiding comment on Wall Street carnage. A year ago this week, he was heralding history-making gains, as his then-imminent signing of a massive tax cut powered stocks higher: