June 21 (Reuters) - The Nasdaq and the S&P 500 slipped

at the open on Friday, with focus on business survey data for

more clues on the health of the world's largest economy.

The Dow Jones Industrial Average rose 73.75 points,

or 0.19%, at the open to 39,208.51.

The S&P 500 opened lower by 6.40 points, or 0.12%, at

5,466.77, while the Nasdaq Composite dropped 40.58

points, or 0.23%, to 17,681.01 at the opening bell.