Futures for the Dow Jones Industrials submerged 197 points, or 0.6%, early Tuesday to 30,943.
Futures for the S&P 500 plunged 15.5 points, or 0.4%, to 3,841.25.
Futures for the NASDAQ Composite gained 10.25 points, or 0.1%, to 11,894.50.
PepsiCo kicked off the corporate earnings season Tuesday morning, with the snacks and beverages giant reporting a better-than-expected quarterly profit and revenue.
The company also raised its revenue outlook for the year. Delta Air Lines and JPMorgan Chase are among the companies slated to report later this week.
In Japan, the Nikkei 225 collapsed 1.8% Tuesday. In Hong Kong, the Hang Seng subsided 1.3%
Oil prices dropped $4.96 to $99.13 U.S. a barrel.
Gold prices picked up $2.50 to $1,734.20 U.S. an ounce.