July 30 (Reuters) - Wall Street's main indexes opened

higher on Wednesday as investors assessed better-than-expected

GDP data, and awaited the Federal Reserve's policy decision and

key tech earnings.

The Dow Jones Industrial Average rose 44.9 points, or

0.10%, at the open to 44,677.9. The S&P 500 rose 10.4

points, or 0.16%, at the open to 6,381.23​, while the Nasdaq

Composite rose 42.1 points, or 0.20%, to 21,140.397 at

the opening bell.

(Reporting by Nikhil Sharma; Editing by Shinjini Ganguli)