July 25 (Reuters) - The main U.S. indexes opened flat on

Thursday as investors drew comfort from stronger-than-expected

economic growth data, a day after megacap stocks steered a Wall

Street slide.

The Dow Jones Industrial Average fell 25.24 points,

or 0.06%, at the open to 39,828.63. The S&P 500 opened

higher by 1.57 points, or 0.03%, at 5,428.70, while the Nasdaq

Composite gained 10.23 points, or 0.06%, to 17,352.64 at

the opening bell.