TRADING TOOL COMPATIBILITY Part II by Daryl Guppy

This article is in two parts. Click here for Part 1

The next most important issue is indicator compatibility. Determining this starts with a visual chart inspection and is based on the first step in analysis shown above. The chart example shows a rising trend from March through July. In this sense it meets the trending criteria we look for in the first question. However, this stock does not meet the indicator compatibility criteria.
Our reader suggested three methods of managing the trend. They were the count back line, the straight edge trend line and the 2xATR indicator. In assessing the trend we would apply only the first two of these. Our preference is to use the 2xATR as a trailing protect profit stop loss only if the trend develops unexpected momentum. The diagram shows the application.



In a steadily developing trend, shown as A, where volatility, or price changes, remain much the same, we apply the count back line and straight edge trend line. These techniques are used to protect capital in the early stages of the developing trade. They are then quite satisfactorily applied to protect profits as the trade develops.

Some trends, shown as B, the price behaviour changes dramatically. The underlying trend remains intact, as shown by the straight edge trend line. However prices bubble upwards in an explosion of unsustainable momentum. The bubble signals significant changes in volatility. Prices behave differently. The collapse from this bubble is often dramatic, and can also cause a collapse of the underlying trend. For traders who own the stock and who have been managing this as a trend trade, this bubble presents an opportunity to take extra profits. The problem to resolve is how to best protect profits. In some circumstances the 2xATR does this most effectively. This is when we apply this indicator. We do not generally use it to manage trades during a stable trend. In a bubble situation we use a combination of CBL and 2xATR to develop the best solution for protecting profits.

The 2xATR approach is used by Chris Tate for general tend management. This is covered in detail in The Art Of Trading.



Indicator compatibility simply means that our preferred indicator has provided an effective solution to managing the trend in this stock in recent past. The chart shows an example of indicator incompatibility. Our preferred trend management tools are a straight edge trend line and a count back line. On the chart extract shown we show the count back line failure points because we want to highlight how indicator compatibility is assessed.

A close below the count back line, shown as the thick black line, signals an end of the trend and a trade exit. Each time a new high is made, the count back line is recalculated. A close below the CBL line triggers an exit from this trade on the grounds that the trend has an increased chance of failure. The balance of probability favouring a continuation of the trend has shifted.

The problem is that subsequent price action showed the trend did continue upwards. The exit signals defined by the count back line were false. We could not know this at the time. Traders have no choice but to exit the trade because the indicator suggests the up trend has ended.

If we were interested in trading this stock using our preferred combination of the count back line and a straight edge trend line then this chart tells us that this stock is incompatible with these techniques. Here is a most important point and it is relevant to any indicator combination we use. The price behaviour of this stock is not compatible with or responsive to our indicator. This does not mean the indicator fails. It simply means it is the wrong tool for this particular job.

Indicator compatibility is about finding the right tool for the job at hand. Home mechanics who use an SAE spanner on a Metric bolt understand the problem clearly. The tool – the spanner – is an excellent tool, but it doesn’t quite fit the job at hand – tightening a metric bolt. In this chart, the price behaviour does not fit the tools we prefer to use – the count back line. If this tool has been incompatible in the past it is unlikely to be compatible in the future.

There is a trend trade with this stock, but it cannot be effectively managed with our chosen tools.



The chart shows how indicator and trade compatibility are bought together in an effective trading solution. The tools we want to use are a straight edge trend line and a count back line. The objective is to join an established trend so this means that we must be able to plot a straight edge trend line with a good level of confidence. We look for a minimum of three rebound points.

Once this condition is established we then apply the count back line to establish if this has been compatible with trend management to date. The answer is yes and this suggests that this technique will continue to be useful in the coming weeks or months. A selection of previous CBL calculation points is shown by the red lines with red * at the calculation starting point.

Once a stock has been selected based on these compatibility factors the traders attention then turns to other factors such as price leverage, volume and the best entry point. Most times traders have to choose between a number of almost identical trading opportunities. The trader’s objective is to maximise the profits for any trade and this is helped by selecting stocks which offer better price leverage. Stocks trading at lower price levels have the capacity to boost profits more easily than stocks trading at $20 or higher.

Although it is human nature to hunt for a bargain, this is not always a good idea in the market. We have selected this stock because we believe it is in a strong trend. We bet against ourselves if we then wait for a price pullback – for weakness in the trend - before buying the stock. If the opportunity arises our preference is to buy the stock as close to the trend line, or the count back line as possible. We certainly do not want to pay the high price of a short term up trend, but nor do we want to miss out on this stock by waiting for a price collapse. The objective is to buy the stock at a reasonable price that is consistent with its recent trading range.


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Article contributed by Private Trader, Market Expert, Trading Coach and Best-Selling Author Mr. Daryl Guppy. For more articles and commentaries from Daryl Guppy, click HERE.