Available for both "Basic" and "Technical Analysis" charts, this feature enables security-to-security or security-to-index comparisons. Up to four comparison symbols and/or indices may be selected and compared at one time. Simply input the symbols to compare (separated by spaces), or check the appropriate indices from the list (additional indices can be used by typing the index symbol into the input field). The resulting comparison chart displays the comparison of price percentage changes for the time range being used.
Note that comparison charting can be used in conjunction with indicators and overlays (the indicators/overlays representing the underlying symbol being charted).