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A technical chart line that depicts the past movement of a security and that is used in an attempt to help predict future price movements.
In technical analysis, a line on a chart representing the price movements of a security. The direction of the line shows whether the security is advancing or declining. Technical analysts use trendlines and patterns within them to determine whether a security or the broader market is bullish or bearish.
In technical analysis, a straight line or two parallel straight lines that indicate the direction in which a security has been moving, and, many chartists believe, the direction in which it will continue to move. When a security price breaks through a trendline, the beginning of a new trend is indicated.