"Tech has kept doing what it does best: expanding corporate earnings at a blistering pace. And that has alleviated concerns of a slowdown. After all, earnings growth has been proved time and time again to be the fuel that keeps the 8-1/2-year bull market running." Tech is only behind energy in the third quarter, and S&P 500 tech stocks are up 37% this year. These trends are expected to continue into the foreseeable future. Some skeptics thought the tech stocks had become overextended, but this doesn't seem to be the case.