S&P 500 futures were little changed on Monday night as investors mulled over Apple's quarterly earnings report and awaited U.S. midterm elections.
Dow Jones Industrial Average futures gained 24 points. S&P 500 futures gained 0.1%. Nasdaq-100 futures added 0.3%.
Apple shares were down 2% in extended trading after the consumer tech giant rolled out a disappointing margin forecast and iPad sales in the fiscal fourth quarter missed the Street's estimates.
Over in Asia, markets were mixed on Tuesday, with South Korea's Kospi tracking the tech losses on Wall Street.
The benchmark index slipped 3.28% in early trade, with heavyweight Samsung Electronics down 4.37%. Australia's S&P/ASX 200, on the other hand, still was in positive territory, up 0.22%.