U.S. stocks ended on a mixed note following the latest signals that the U.S. economy continues to hum. The S&P 500 closed little changed Thursday. The Dow Jones Industrial Average added 0.4% to the all-time high it set the day before,

U.S. stocks drifted around their record heights after the latest signals that the U.S. economy continues to hum.

Nvidia has delivered such massive gains in recent years that it's easy to overlook how the stock has performed over the short term. Most investors would be happy with a 20% gain in a year. Nvidia's share price has soared over 20% in the last five weeks.