The S&P 500 closed at its highest level since December 2007, a day after the Federal Reserve’s decision to embark on another round of monetary stimulus.
Within the index , about 110 stocks or 22 percent of its components traded at new 52-week highs. That's the highest number of new highs since December 2010.
Indeed, 6 out of ten S&P sectors reached new multi-year highs on Friday: Energy, Materials, Financials, Industrials, Technology and Consumer Discretionary (Telecom and Healthcare stocks hit new multi-year highs on Thursday).