S&P 500 and Nasdaq futures slipped into the red on Tuesday as investors geared up for a whirlwind day of company results and awaited potential breakthroughs in negotiations between the United States and its trading partners.

Gold futures rallied Monday for their best gains in more than a month and silver surged to its highest settlement in nearly 14 years, boosted by a solidly lower U.S. dollar index and a decline in U.S.