An oscillator that attempts to combine information for several different periods into one number. Three different periods are used, those generally being 7-day, 14-day, and 28-day periods. The resulting oscillator is “bounded” in that it moves between 0 and 100 with 50 as the centerline. 70 and 30 are used as overbought/oversold levels. See our ChartSchool article on the Ultimate Oscillator.