Coppock’s indicator: Mercifully, monthly only

If, like me, you have spent way too many hours, days, and years studying charts – and more often than not staring blankly at computer screens – it’s nice to know some things only have to be done very occasionally; a bit like Spring cleaning. With the start of a brand new year upon us it’s time to look at monthly, quarterly, and annual bars or candles; (pity the poor point and figure and Renko aficionados who never get a break caused by time).

This week, as well as studying the long term candles, I have also been looking at the Coppock indicator, or ‘curve’ as it is sometimes called, because it is of great interest to retail stock market investors. They have also expanded its traditional use from company stocks to other indices, like the Commodities Research Bureau index.

Coppock, first devised by his namesake (Edwin ‘Sedge’ Coppock) in the mid-1960’s, is basically a variation of a very long term moving average system – and therefore, not surprisingly, follows trends. It is a weighted (by 10 months) moving average crossover of the 11 and 14 month rate of change (he first used the S&P 500). The unusual time periods chosen are believed to be linked to the normal period of grieving after a close death, thought to be a similar loss as a big stock market decline.

The indicator generates a ‘buy’ signal when it crosses above the zero line, forming a trough. Interestingly, it never gives a ‘sell’ signal – perhaps yet again reinforcing the stockbrokers’ tendency to bullish forecasts – though according to Wikipedia:

A slightly different version of the indicator is still used by the Investors Chronicle, a British investment magazine. The main difference is that the Investors Chronicle version does include the sell signals, although it stresses that they are to be treated with caution. This is because such signals could merely be a dip in a continuing bull market.

Many have started suggesting going short when the Coppock drops below zero, and others experimenting with a daily version of it all. I rather like the idea of doing some things once in a blue moon.

Coppock

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About Nicole Elliott

Nicole Elliott

A graduate of the London School of Economics and Political Science (BSc Social Psychology) Nicole Elliott has worked in banks in the City of London for the last 30 years. Whether in sales, trading or forecasting technical analysis has always been the bedrock of her thinking. Key expertise lies within all areas of treasury: foreign exchange, money markets, fixed income and commodities.

She has also added to the body of knowledge of the industry writing the first western book on Ichimoku Cloud Charts. Strong media links and a cult following are due to her prescient calls on the markets and often entertaining format.

Nicole can be contacted at trending@sta-uk.org

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