Dec 4 (Reuters) - Wall Street's main indexes opened

higher on Wednesday, with the benchmark S&P 500 and the Nasdaq

hitting all-time highs as investors focused on upcoming economic

data as well as remarks from Federal Reserve Chair Jerome

Powell.

The Dow Jones Industrial Average rose 235.5 points,

or 0.53%, at the open to 44,941.05. The S&P 500 rose 19.5

points, or 0.32%, at the open to 6,069.39​, while the Nasdaq

Composite rose 106.6 points, or 0.55%, to 19,587.477 at

the opening bell.