S&P, Nasdaq hit highs on gains in health, tech stocks

U.S. stocks opened higher on Friday, extending a post-election rally, with gains in healthcare and technology sectors lifting the Nasdaq and the S&P 500 to fresh all-time highs. The "Trump rally" has been running since the Nov. 8 vote as investors bet President-elect Donald Trump's policies will boost economic growth and inflation. The S&P 500 is currently trading at about 17.5 times forward twelve-month earnings, above the 10-year median of nearly 15 times, according to Thomson Reuters