Recently on a live, Friday-evening session of the Daily Market Commentary series, one attendee asked the question "How can you tell when a stock might be ready to break out of a sideways channel and begin an upward trend?" I thought about the answer to this question for quite a while afterward and decided that this topic deserved further discussion.
Though there is no guarantee for being able to see the future through any technical indicator, there are certain indicators which can give worthwhile clues that may not be easily discernible to the human eye in a regular price chart. The Average Directional Index (ADX) is one such indicator.
The ADX doesn’t give you a strategy for trading, implicitly, but rather a strategy that complements other trading strategies. If you are using any kind of a strategy that helps you identify trending trades (that is a trade that benefits from trending price action), then the ADX will help you to know whether the conditions are right for you to be taking the trade in the first place.
One simple rule for the ADX strategy is as follows:
-
If the ADX level is above 20, consider looking for a trending trade
-
If the ADX is below 20, pass on the entry signal
This rule is a simplified form of using the ADX based on the writings of the man who developed it. Welles Wilder, a pioneering market technician, first described the indicator and its components in his book New Concepts in Technical Trading Systems back in 1978 when it was published. At that time, there were no computers to rapidly accomplish the calculations. It is interesting that even in this day of sophisticated technology, his work on this indicator remains as fresh as the day it was published.
The ADX attempts to aggregate subtle details of price movement over several time periods, minutes, hours, days or weeks (the number of periods is a variable setting). In particular it looks to gauge how much price movement is occurring beyond an average range of activity and which direction it seems to be moving. Within this calculation, some very interesting, and timely, observations can be discerned; namely, the build-up of a stock within a channel as it prepares to break out into a new trend.
Consider the example of Yahoo (YHOO) in the figure below. Not all stocks make such a clear example, but here you can see how it was that in the midst of YHOO’s year-long sideways range between $14.50 and $16.25, the ADX moved above 20 and made a definite upward trending move signaling the possibility of a breakout to come.
YHOO – ADX trend precedes a breakout from channel
Seeing this movement on YHOO's ADX could have given you the added confirmation you were looking for when deciding whether or not to en
This is a very simple example with more detail than I can effectively explain in this brief blog post. If the idea behind this indicator in interesting to you, attend the Strategy Session to be held this coming Thursday (January 24th) at 8 p.m. Eastern time, where we will have an in-depth discussion on the ADX.
To register, log in to Scottrade.com, click on the Knowledge Center tab, click on the Strategy & Commentary link in the left navigation and then click on the ADX Strategy Session link.
-- By Gordon Scott, CMT, Learning Markets Analyst.