It is no secret technology stocks have been a driving force in domestic stocks. However, their continued rally has led to the overall sector becoming a huge chunk of the market, and therefore the market's return.

• How has the happened?
• Is the concentration to tech stocks truly indicative of the overall diversification of the US economy?
• Has this sort of lack of diversification ever happened previously?
• What might this mean for the future of the domestic stock market?

In this week's Trading Perspectives, Sam Clement and John Norris discuss how so-called tech stocks have become the dominant force behind the US markets. It has been a wild, and mostly fun, ride. But will it continue?