However, looking only when the gold-oil ratio has exceeded 30:1 (i.e., oil is cheap relative to gold), crude has returned 32% on average over the next twelve months (over four times its long-term average), while gold has returned 4% on average. Oil was lower only 13% of the time (70% less often). On average, oil outperformed gold by 28% during these periods compared with 2% normally.
At the other extreme, when the gold-oil ratio was less than 10:1 (i.e., oil was expensive relative to gold), crude lost 7% on average over the next twelve months and was negative nearly 60% of the time. Gold returned 18% on average during these periods, outperforming oil by 25%. Since 80% of all observations occur when the ratio is between 10 and 30 you should expect the relative returns of both gold and oil to be like their long-run averages and that is exactly what occurred. When the ratio was between 10 and 30, oil returned 5% on average in the following 12 months, and was lower 41% of the time while gold returned 4% and was lower 33% of the time, roughly in line with long-term averages.
We last used this analysis in early 2016 to justify our investments in oil-related securities. At that point, the gold-oil ratio hit a then-record 47:1. We argued that oil prices were set to surge and invested in oil-weighted E&P securities as a result. Over the next 30-months, oil rallied by 191% from $26 per barrel to $76 per barrel by October 2018. Gold on the other hand fell by 4% over the same period. Oil stocks (as measured by the XLE ETF) advanced by 56%, well in excess of gold stocks (as measured by the GDX) which rose only 3% but lagging the S&P 500 which advanced 69%.
Eoin Treacy's view
The gold/oil ratio spent much of the last couple of decades ranging mostly between 10 and 30. On the small number of occasions is veered outside of those bands the move was quickly reversed. It has therefore been reliable indicator of where value was present on repeated occasions. However, the current reading questions that conclusion.
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