U.S. stock futures pointed to marginal gains at Wednesday's open after a record close in the previous session.
Futures for the Dow Jones Industrial Average eked up 17 points, or 0.1%, to 26,656.
Futures for the S&P 500 slid 0.75 points at 2,937.25
NASDAQ futures fell 1.5 points to 7,736.50
Boeing shares rose 0.8% in the pre-market despite the aerospace giant pulling its 2019 guidance and halted share buybacks, citing uncertainty around its 737 Max aircraft. Caterpillar shares also rose 0.4% on better-than-expected earnings.
Facebook, Microsoft, PayPal, Tesla Motors and Visa are all set to release their latest quarterly figures after market close.
Market focus is largely attuned to earnings season, after better-than-feared figures from major companies in the previous session helped the Nasdaq and S&P 500 indexes reach record closing highs.
Oil prices soared after the U.S. announced the end of six months of waivers that allowed Iran's eight biggest buyers to continue importing limited volumes of Iranian oil.
Overseas, in Japan, the Nikkei 225 dropped 0.3% Tuesday, while in Hong Kong, the Hang Seng Index retreated 0.5%.
Oil prices dipped 24 cents to $66.06 U.S. a barrel.
Gold prices moved forward $1.90 to $1,275.10 U.S. an ounce.