July 9 (Reuters) - Wall Street's main indexes opened

higher on Wednesday, as investors shrugged off President Donald

Trump's aggressive tariff moves and kept a close watch on

negotiations with global trade partners.

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

rose 177.94 points, or 0.40%, to 44,418.70, the S&P 500

gained 25.54 points, or 0.41%, to 6,251.06 and the Nasdaq

Composite gained 118.04 points, or 0.58%, to 20,536.50.