The Nasdaq composite held up the best among the major indexes, but wavered and was up just 0.2% in recent trades. The S&P 500 also wavered and edged into positive ground after falling 0.8% Monday. Small caps outpaced the market, with the Russell 2000 index lifting 0.5% higher. The Russell ended a six-day winning streak Monday.

Stock futures are pointing to a lower open Monday as investors respond to President Donald Trump's latest tariff threats and prepare for a busy week of earnings reports and economic data.