U.S. stock index futures pointed to a higher open on Monday as traders digested news of an extension of an agreement to freeze oil output.
Saudi Energy Minister Khalid al-Falih and his Russian counterpart Alexander Novak met on Monday in China's capital Beijing and jointly said that a deal to cut crude supplies in order to prop up the market would be extended from the middle of this year until March 2018.
Brent crude traded at $52.39 a barrel on Monday, up 3.05 percent, while U.S. crude was around $49.45 a barrel, rising 3.37 percent.
Meanwhile, U.S. President Donald Trump is under pressure from lawmakers to turn over any tapes of his conversations with the former FBI chief James Comey.
On the data front, the Empire State manufacturing index dropped to negative 1 in May from a print off 5.2 last month. The National Association of Home Builders survey at 10 a.m. ET.
On the earnings front, Nippon Telegraph and Trivago posted quarterly results before the bell. Vipshop and Noah Holdings are all due to report after the market close.
In Europe, the pan-European Stoxx-600 index was 0.2 percent lower on Monday. In Asia, the Shanghai Composite in China closed 0.22 percent higher, while the Nikkei in Japan closed 0.07 percent lower.
—Reuters contributed to this report.