Wednesday, June 11, 2008

Parabolic SAR

Parabolic SAR

Parabolic Stop and Release was developed by J Welles Wilder. It is made up of a series of evolving points called Stop and Reverse (SAR) points. The position is reversed when the protective stop is triggered.
Parabolic SAR is more popular for setting stops than for establishing direction or trend.
Parabolic SAR is base on the following rule: to shift the levels of closing prices only in direction of opened position. If there is a long position opened before, it is possible to increase the level of closing prices, but not to decrease it. If the short position is opened, it is possible to decrease the level of closing prices. Once a Parabolic SAR is reached, the current position is exited and a new position in the opposite direction is taken.
Signal to buy is given when the upper SAR crosses the price line.
Signal to sell is give when the lower SAR crosses the price line.


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