June 1 (Reuters) - Wall Street's main indexes opened near record highs on Monday as investors weighed Nvidia's latest artificial intelligence push against growing doubts over a deal to end the three-month-old U.S.-Iran war.

The Dow Jones Industrial Average rose 128.6 points, or 0.25%, at the open to 51161.1. The S&P 500 rose 2.2 points, or 0.03%, at the open to 7582.29​, while the Nasdaq Composite dropped 20.0 points, or 0.07%, to 26952.579 at the opening bell.