U.S. stocks gave up early gains to end lower on Friday. After reaching record intraday highs, the Nasdaq slid 126.08 points or 0.7 percent to 17,732.60 and the S&P 500 fell 22.39 points or 0.4 percent to 5,460.48. The narrower Dow posted a more modest loss, edging down 45.20 points or 0.1 percent to 39,118.86. For the week, the Nasdaq rose by 0.2 percent but the Dow and the S&P 500 both edged down by 0.1 percent. However, the Nasdaq and the S&P 500 posted substantial gains for the first half.
