The Australian dollar has a long history as a 'gold dollar'. Australia is among the top gold producers in the world, along with South Africa and the US. More recently, China has grown into a significant producer. However, in terms of the value of gold as a proportion of the overall economy, gold production is much more important for Australia (and South Africa) than it is in China or the US (a $10 billion gold mining industry in a nation with a population of 20 million is going to be 15 times more economically important than a $10 billion gold mining industry in a country with 300 million people).
This reliance on gold means a couple of things. When the value of gold goes up, it will create demand for Australian dollars both due to investment in mining, and to purchase the gold produced from our mines. Second, when the value of gold declines, the Australian dollar goes down as there is less demand for dollars to invest, and less dollars are needed to buy the same amount of gold. The net result (in theory) is that the price of gold denominated in Australian dollars is less volatile than gold denominated in other currencies. For example, if gold costs US$500 an ounce one Australian dollar buys 50 US cents, gold will be worth AU$1000. If the price of gold increases to US$700, this will increase demand for Australian dollars, and one Australian dollar may now buy 60 US cents, so gold will be worth $1166 an ounce. In US dollar terms, gold has gone up by 40%, while in Australian dollars it has risen only 17%. Similarly, if gold falls from US$700 to $500, demand for Australian dollars falls and may now only buy 50 US cents once again. In US dollar terms, the price of gold has fallen 28%, while in Australian dollar terms it has fallen only 14%.
That theory, with some exceptions, generally does hold true. Generally a weak Australian dollar equals a weak gold price, and vice versa. The moderating affect of the currency on gold price should also, naturally, extend to the relationship between stock markets and gold price. The All Ords:Gold ratio should be much less volatile than the Dow:Gold ratio because the price of gold itself is less volatile in Australia than in the United States.
Now for the chart:

The red line in the chart represents the Dow:gold ratio that I detailed in an earlier post. The blue line represents the All Ords:gold ratio. As predicted above, the All Ords is much less volatile than the Dow. Despite having near equal values in the early 1930s, the Dow:gold ratio peaked at 27 in the 60s, while the All Ords:gold managed just 13. Similarly, the two ratios had near equal values in the early 1980s; while the Dow:gold went on to went a peak of nearly 40, the All Ords:gold managed less than 7.
The moderating affect of such an important gold industry may play a role in this, but I dont think it gives us the whole picture. There are some other factors at play that may explain the differences. The first is fiscal policy. The US authorities are generally more eager to flood markets with cheap credit than in Australia. More excess money equals bigger bubbles, and, inevitably, bigger bubble bursts. The second factor relates specifically to the 1999 bubble. This was the 'tech bubble'. Im sure most of you can remember the short-lived craze of paying incredible prices for stocks like Amazon in the belief that they may one day make some money. The assets became massively overvalued, and eventually the bubble burst. Australia did not have a tech bubble: we lacked the communications infrastructure at the time to really develop one. I can recall paying $8 an hour for a 14.4k dialup connection in the late 90s - hardly the bleeding edge of a brave new technological world even back then. In hindsight, we dodged a bullet.
So what does this mean for investing? A couple of things. First, if you want to chase stock:gold bubbles, you are better off looking to the United States than Australia. If you are intent on applying this to the Australian market, buying at a All Ords:gold ratio of 2.5 and selling somewhere around 6 would have been a fairly successful way of going about it. You might be able to get in lower than that working on daily data (remember that the data in the charts is only end of year data) I eyeballed a some daily gold and all ords prices a while back and it seems to get down to about 2.2 earlier this year.
One important thing to remember about all this is that it is all about exchanging one class of assets for another when one is cheap relative to the other. It doesnt necessarily correlate with the highest values of either asset in dollar terms. For example, in the chart above, the All Ords:gold most recently peaked in 1999, when the All Ords was around 3100. The All Ords didnt reach its dollar peak until 2007, at around 6700. However, in between the gold price had risen, and risen faster than the All Ordinaries. So if you had of exchanged stocks for gold in 1999, you would have bought more gold than if you had done the same in 2007, despite the All Ords more than doubling in dollar terms. If you can exchange one class of assets for another at an optimum time, and both these assets appreciate in the long term, you are going to end up a lot better off than if you merely held one or both of these assets all the time.



