The technology sector has been at the center of a sharp recovery in USA stocks since a market rout in February.
Investors fled to safe-haven assets, with the dollar rising to a 13-month high and USA bond yields slipping to a three-week low.
Seven of the 11 main S&P sectors were higher.
"I don't think that the Turkish situation is really important to the global economy", he told AFP. "Anytime there's a sniff of contagion they will be weak", said Michael Antonelli, managing director, institutional sales trading at Robert W. Baird in Milwaukee.