Fannie Mae-No Politics (FNMA)

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SAR is a technical indicator that technical traders (those who rely heavily on chart formations and patterns) use. It is designed to show whether and when an uptrend or downtrend is occurring. Of course, in real time, no such indicator can predict with 100% accuracy what trend will start with the next transaction. But just look up - technical trading and Parabolic SAR. You'll learn more that way. You can see it in action by searching for it on youtube, for example.