What it is:
How it works (Example):
A primary downtrend is when each successive decline of the primary trend carries the market to lower lows and lower highs, lasting from several months to several years. This is illustrated in Figure 1 below.
As you can see in the Figure 1, High 5 is lower than the previous high and Low 4 is lower than the previous low.
Within a primary downtrend, several secondary reactions may occur against the trend, lasting for a few days, weeks or even months, but they don't necessarily change the definition of the overall trend. These movements are considered micro trends, such as daily movements and other short-term price fluctuations.
If a rally doesn’t succeed in breaking through the previous high and the market subsequently declines to fall below a previous low, the price movement is still considered a primary downtrend.
Why it Matters:
It is difficult for investors to precisely time primary downtrends. That's because markets often rise higher than most investors and analysts anticipate -- and sometimes fall lower than they could possibly fathom.
In nearly every case, investing in assets or markets that are in a primary downtrend is not something you want to do. It is wise to wait until a primary uptrend emerges in the asset or market before you consider buying shares.
[Learn about four industry trends that could define 2011 and beyond by reading: 4 Powerful Industry Trends to Exploit in 2011]