U.S. stocks opened with a mixed tone on Tuesday, with the S&P 500 and Nasdaq edging higher after investors responded positively to a report that the United States and Iran were close to "some sort of an arrangement" to end six months of conflict. The Dow Jones Industrial Average fell 14.4 points, or 0.03%, to 53,961.6 at the open. The S&P 500 rose 14.4 points, or 0.19%, to 7,767.51, while the Nasdaq Composite gained 66.8 points, or 0.25%, to 26,672.175. The move suggested easing geopolitical tensions were supporting risk appetite at the opening bell.