Before tech bubble, stocks like CSCO were hot and used to soared after the earnings. Not anymore. A few years ago stocks like GOOG, PCLN, NFLX , ISRG, BIDU were soaring and were very volatile with big growth potential but not anymore. Just up to last quarter, AAPL was the same but again it is fizzling. I don't know any new stock which is hot anymore. I see most stocks are maturing. Explosive growth is not there anymore. There is no calatyst in the US stock market.