After a few minutes of trading, the broad S&P 500 index is up 0.8 percent, the technology-heavy Nasdaq Composite Index is up 1.3 percent, while the Dow Jones Industrial Average is up 0.5 percent.
According to US President Donald Trump, Washington and Tehran will meet on Tuesday, something that investors appear to have taken note of.
A barrel of North Sea oil costs just over $72 at 3:30 p.m.
