Tech stocks once again look unstoppable

Reuters / Beck Diefenbach Tech stocks have been an invaluable part of broader stock market strength in 2017, returning more than double the benchmark S&P 500. Skeptics said for months that the air would have to come out of tech stocks, which they said had gotten overextended. Tech companies have responded by reporting some of the best earnings growth out of any sector in the S&P 500. The tide was supposed to turn for scorching-hot tech stocks. To hear skeptics tell it, the group, which was so cr...