Research is based on PowerRating -system, and based on simulation of ca. 6 million trades between 1995-2005.
http://www.tradingmarkets.com/.site/powerratings/?hcode=menu
I did plot the PowerRatings for NUE, KBH, FCX, OIH, RTP every day for 9 months. It shows ca. "7" on pullbacks and "3" on...