Megacap tech stocks: Is market leadership changing?

The S&P 500 and Nasdaq 100 continue to be led by megacap tech stocks. But could that be changing? RBC Capital Markets Head of U.S. Equity Strategy Lori Calvasina joins Yahoo Finance Live to discuss the direction for market leadership going forward, which Calvasina characterizes as "attempting to happen" but "not quite breaking out." Calvasina goes on to comment on how a higher interest rate environment by the Fed could pave the path for equity futures if a shakeup in market dominance were to occur.