June 16 (Reuters) - The blue-chip Dow touched a fresh record

high on Tuesday as oil prices slid further on optimism around a

U.S.-Iran peace deal, while SpaceX surpassed Amazon's market

value to become the fifth most valuable U.S. firm.

At 9:31 a.m. ET, the Dow Jones Industrial Average

rose 306.27 points, or 0.59%, to 51,977.30, the S&P 500

gained 0.95 points, or 0.01%, to 7,555.24 and the Nasdaq

Composite lost 8.40 points, or 0.03%, to 26,675.54.