Range Expansion Index (REI)

v10.3
Range Expansion Index (REI)

The range expansion index (REI) is a technical indicator used in the technical analysis of financial markets. It is intended to chart the relative strength or weakness of a trading vehicle based on the comparison of the recent price changes and the overall price changes for the period.

The REI can be classified as a momentum oscillator, measuring the velocity and magnitude of directional price movements. The REI shows overbought/oversold price conditions by measuring the relation between the sum of “strong” price changes (such that form a trend) and all price changes for the period.

The REI is most typically used on an 8 day timeframe. It changes on a scale from −100 to +100, with the overbought and oversold levels marked at +60 and −60, respectively.

The range expansion index was developed by Thomas DeMark and published in his 1994 book, The New Science of Technical Analysis.

(source Wikipedia).

 

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