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Interpreting Directional Movement Indicators on the I Chart

Updated 01/31/14

RSI and +DM

With the Window parameter set to 1, +DM is nearly identical to RSI..

Increasing the Window size for +DM reduces the volatility of RSI and may produce a line that is easier to interpret.

Interpreting  DM

 In Wilder's "New Concepts in Technical Trading Systems", his primary interpretation of Directional Movement is a simple cross over of +DM and -DM.

We have placed buy/sell red/green tics on the dates where the yellow and purple +DM and -DM cross.

The timing converts a -32% annualized return to a positive 55% return.

For mutual funds with modest volatility, a concept worth exploring is using AccuTrack to create trades between the +DM and -DM lines. See the discussion about moving yellow lines to the T Chart for detailed analysis.

Like most technical indicators, DM always reduces risk which always improves performance in bear markets. However, return is reduced in bull markets.