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Sunday, October 2, 2011

Average Directional Index (ADX)

Average Directional Index (ADX) is an indicator that was created to measure the strength of a trend (either uptrend or downtrend). First put forward in the book titled 'New Concept in Technical Trading Systems' by its discoverer J. Welles Wilder, who also created the RSI and Parabolic SAR indicator. ADX line is displayed between the values of 0-100 in the vertical scale.

There are several ways of reading the ADX line, there are:

The basic theory of this method declared on the ADX line is increased language support defines the market was in a strong trend. When the ADX line is weakened or declining trend means the market is sideways. These indicators can help traders to assess whether a market is likely to be in a strong trend or sideways.

However common the ongoing trend reversal even (or be turned sideways direction) when the ADX line was at a high level and when in a low level, so that some traders to implement strategies that contrarian (opposite) of the ADX line is in extremes.
How to determine the ADX line in extreme conditions is to compare the history of this ADX line with previous ADX line. The ADX line starts to bend downwards at high levels is a signal that the ongoing trend will be reversed, signaling sell / buy signal to liquidate stock positions already held (not to open new positions), similarly when the ADX line starts to bend upward at a very low level.

ADX line indicating the direction of divergence with the stock can also be used as a sign of a weakening trend which is ongoing. When a new price movement creates a higher peak (higher highs) accompanied by ADX line opposite or forming lower highs, then gave a bearish sign. Conversely, if price movements form the basis of the lower (lower low), but in fact there was an increase ADX line or forming higher lows, then gave a bullish sign.

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