The range—The range is the spread of values within which
the stock traded throughout the day. The range spans between
the bar’s highest point and the same bar’s lowest point. It is
measured from the top of the bar, where resistance set in, to
the low, where support came in. The size of the range gives us
important information about how easily demand can move the
stock up or supply force the price down. The wider the range,
typically, the easier it is for the forces of supply and demand to
move the stock price.