The New York stock exchanges started Friday with gains on the last trading day of the week. Investors processed a new inflation figure for the United States, which was higher than the average expected.
In recent days, stock market trading on Wall Street has been characterized by strong up and down movements, mainly due to concerns about over-valuations for major tech groups.
Shortly after the opening bell, the Dow Jones index recorded 0.3 percent higher at 27,610 points. The broad S&P 500 rose 0.4 percent to 3351 points, and the Nasdaq tech exchange gained 0.6 percent to 10,982.
Tesla (plus 1.6 percent) could count on interest. The maker of electric cars will export cars from its mega factory in Shanghai too, among other places, Europe. Singapore, Australia and New Zealand are also supplied from the Chinese factory.
Facebook won 0.4 percent. The tech giant is challenging an earlier decision by the Irish privacy watchdog.
It seems to want to put an end to the way Facebook transfers data between Europe and the US. Facebook is urging regulators to act pragmatically until a long-term solution can be found.
The American supermarket chain Kroger lost 2.5 percent, despite quarterly figures that were better than average.
Software group Oracle also reported quarterly figures and reported increased turnover and profit. Investors rewarded those results with a plus of 4.8 percent.