US stock-index futures turned lower before the market opened on Sept. 23, with Dow Jones futures down 0.31%, S&P 500 futures down 0.12% and Nasdaq 100 futures down 0.27%. Oil prices reversed earlier losses, as WTI crude futures rose 0.16% to $90.669 a barrel and Brent futures gained 0.94% to $96.305. Spot gold fell 1.06% to $4,312 an ounce, while spot silver dropped 3.03% to $65 an ounce. European equities also declined, led by a 0.73% drop in Germany's DAX 30.