July 10 (Reuters) - The S&P 500 and the Nasdaq notched

fresh highs at the open on Wednesday for the fifth straight

session, as continued strength in shares of its biggest

companies fueled a record rally.

The S&P 500 opened higher by 14.28 points, or 0.26%,

at 5,591.26, while the Nasdaq Composite gained 82.80

points, or 0.45%, to 18,512.09 at the opening bell.

The Dow Jones Industrial Average fell 19.52 points,

or 0.05%, at the open to 39,272.45.