Indicators 2

Indicator No.2: A Trend-Confirmation Tool

Now we have a trend-following tool to tell us whether the major trend of a given currency pair is up or down. But how reliable is that indicator? As mentioned earlier, trend-following tools are prone to being whipsawed. So it would be nice to have a way to gauge whether the current trend-following indicator is correct or not. For this, we will employ a trend-confirmation tool. Much like a trend-following tool, a trend-confirmation tool may or may not be intended to generate specific buy and sell signals. Instead, we are looking to see if the trend-following tool and the trend-confirmation tool agree.

In essence, if both the trend-following tool and the trend-confirmation tool are bullish, then a trader can more confidently consider taking a long trade in the currency pair in question. Likewise, if both are bearish, then the trader can focus on finding an opportunity to sell short the pair in question.

One of the most popular – and useful – trend confirmation tools is known as the moving average convergence divergence (MACD). This indicator first measures the difference between two exponentially smoothed moving averages. This difference is then smoothed and compared to a moving average of its own. When the current smoothed average is above its own moving average, then the histogram at the bottom of Figure 3 is positive and an uptrend is confirmed. On the flip side, when the current smoothed average is below its moving average, then the histogram at the bottom of Figure 3 is negative and a downtrend is confirmed. (Learn more by perusing "A Primer on the MACD.")

Figure 3: Euro/yen cross with 50-day and 200-day moving averages and MACD indicator

In essence, when the trend-following moving average combination is bearish (short-term average below long-term average) and the MACD histogram is negative, then we have a confirmed downtrend. When both are positive, then we have a confirmed uptrend.

At the bottom of Figure 4 we see another trend-confirmation tool that might be considered in addition to (or in place of) MACD. It is the rate of change indicator (ROC). As displayed in Figure 4, the red line measures today's closing price divided by the closing price 28 trading days ago. Readings above 1.00 indicate that the price is higher today than it was 28 days ago and vice versa. The blue line represents a 28-day moving average of the daily ROC readings. Here, if the red line is above the blue line, then the ROC is confirming an uptrend. If the red line is below the blue line, then we have a confirmed downtrend. (For more on the ROC indicator, refer to "Measure Momentum Change With ROC.")

Note in Figure 4 that the sharp price declines experienced by the euro/yen cross from mid-January to mid-February, late April through May and during the second half of August were each accompanied by:

• The 50-day moving average below the 200-day moving average
• A negative MACD histogram
A bearish configuration for the ROC indicator (red line below blue):