S&P 500 futures are down 0.9%.
Dow Jones Industrial Average futures are falling 0.6%.
Nasdaq 100 futures are sliding 1.2%.
On Monday, the Dow Jones Industrial Average rose 588 points, or 1.29%, to 46,068, the S&P 500 increased 102 points, or 1.56%, to 6,655, and the Nasdaq Composite gained 490 points, or 2.21%, to 22,695.
