The Relative Price Strength Rating that appears for each stock is calculated by comparing its price change over the past 12 months to that of all other stocks in the tables. Results are rated on a scale from 1 to 99, with 99 being best.
An RS Rating of 99 is the highest possible and means the stock has outperformed 99 percent of all stocks in the past 12 months. An RS Rating of 1 means nearly all other issues have done better. Market leaders usually rate 80 or higher.