Parabolic SAR
The Parabolic SAR calculates a trailing stop. Simply exit when the price crosses the SAR. The SAR assumes that you are always in the market, and calculates the Stop And Reverse point when you would close a long position and open a short position or vice versa.
The Parabolic SAR was developed by J. Welles Wilder and is described in his 1978 book, New Concepts In Technical Trading Systems.
Formula:
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