orderly and gradual trends are not desirable?
afternoon strength is not desirable?
in addition, there are 100's of individual stocks and a large basket of ETF's and Ishares that exhibit this trend..seems to be saying something.
They're desirable for buy and hold investors. For traders, who want to make 50%, 100% a year, they want volatility. Doesn't necessarily have to be in one vehicle. S&P can go up, oil can go down. But usually best when entire market gyrates.
No trader's gonna be happy with 10-15% gains a year.