Parabolic Stop and Reverse is a technical indicator developed by Welles Wilder. It is based on the premise that a strong trend will continue to increase in strength and hence it will follow a parabolic arc. During an uptrend a SAR point starts far from the price and as the price accelerates upwards the SAR points (below the price in an uptrend and above the price during a downtrend) close the gap. When the SAR point reaches the price the long position is closed and a short is opened. It is a system that is always in the market either as long or short. The points (SAR) serve as trailing stop loss and trailing take profit. It works well during trending markets but it produces many false signals during sideways markets.
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