Parabolic SAR Explained(포물선 SAR 설명) Posted By: Steve Burnson: The Parabolic SAR (stop and reverse) indicator is a technical trading tool that quantifies both trends and price reversals on a chart and can be used as a stop loss, trailing stop, or entry signal. The Parabolic SAR indicator was created as a trend following tool that allowed winning trades to run until they stopped and reversed maxim..