Thinking in ratios – Untangling price moves

Media wants attention and like any spoilt child, the beast will do anything to get it. So business headlines scream at us with emotive words like ‘slump’, ‘soar’, ‘crisis’ and ‘opportunity’. It’s difficult not to get swept up in it all and the risk is that the investor will lose money.

That same investor has a pre-set way of looking at things, usually as price per unit denominated in their currency of choice. Add to this the tendency to cover markets in a way that suits global preferences, and suddenly £1.5100 becomes the value of the pound; or perhaps £0.7200, or even €1.3888.

This problem is especially endemic in commodity markets, where crude oil becomes ‘cheap’ at $43 per barrel but ‘expensive’ at £1.14 at the pump. Similarly gold at $1190 will look cheap to many, but for the Japanese it is expensive at 4,800 Yen per gram.

One way of getting around the fixation on absolute price is to look at price relative, something that the stockbroking community have done for years – the individual share price relative to the index it is in. Commodity market participants tend to look at price ratios, mainly because they do not have good enough benchmarks. Yes, you might say, there is the CRB index. Well, but… it is too heavily weighted towards energy and gold.

Two charts for you: an old favourite, the gold/silver ratio: how many ounces of silver do you need to buy one of gold – yes, denominated in US dollars again, I know. But you can begin to see which one is rising or falling faster than the other.

gold_silver

Slightly more unusual, the gold/crude oil ratio where one calculates how many barrels of oil will one ounce of gold buy. The chart shows the massive slide in the value of crude since July last year – a move similar to that in Q3 2008 – and the subsequent retreat back inside the two standard deviation band (the dashed green line).

gold_oil

Other interesting commodity ratios that you might like to look at are the ‘crack spread’ – crude versus gasoline or heating oil, and the soy bean crush – beans versus bean oil and mash.

Have fun!

 

Charts courtesy of Reuters.

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The views and opinions expressed on the STA’s blog do not necessarily represent those of the Society of Technical Analysts (the “STA”), or of any officer, director or member of the STA.

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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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