International Commodity Markets: What the Research Shows
Book: Commodities: Markets, Performance, and Strategies
Editors: H. Kent Baker, Greg Filbeck, Jeffrey H. Harris
Publisher: Oxford University Press, 2018
ISBN: 9780190656010
How Commodities Move Emerging Equity Markets
In the first two parts of this series, we covered the setup of Smimou’s study and how commodity futures affect the business cycles of emerging markets. Now we get to the part that matters most for investors: what happens in equity and bond markets.
The chapter tests how constructed commodity futures indexes affect the domestic equity and bond markets of emerging countries. And the results have some practical implications for portfolio construction.
Commodities and Emerging Equity Markets
The study looks at how energy, metals, and agricultural commodity portfolios affect equity returns in the selected emerging countries, while controlling for the U.S. dollar index.
The results are region-dependent, which is consistent with everything we saw in Part 2:
For energy commodities, the impact on equity markets varies significantly across regions. Oil-exporting countries in the MENA group show a strong positive contemporaneous effect. When energy prices go up, their stock markets tend to follow. This makes intuitive sense. Higher oil prices boost government revenues, corporate profits, and overall economic confidence in these countries.
For the special emerging group (Russia, India, China, Turkey), energy also matters, but the relationship is more complex. Russia responds like an oil exporter. India and China, as major energy importers, have a different dynamic.
Metals show significant correlations with equity markets across a broader set of countries. For precious metals specifically, 16 out of 19 countries show a positive contemporaneous or trailing effect on their domestic market performance. South Africa stands out with a coefficient of 0.250, which is the highest in the sample. This makes sense given South Africa’s mining sector is a massive part of its economy.
Agricultural commodities have coefficients ranging from 0.039 (Egypt) to 0.17 (Argentina) to 0.19 (South Africa). Argentina’s and South Africa’s dependence on agriculture to fuel their economies shows up clearly in the data.
Commodities and Emerging Bond Markets
The bond market analysis adds another layer. Commodities do not just affect stocks. They affect the fixed income side too, through channels like sovereign risk, inflation expectations, and overall economic health.
The study finds that commodity price changes have a noticeable impact on bond markets of emerging countries. Volatility transmission from commodity markets reaches sovereign credit default swap (CDS) spreads. Research by Bouri, Boyrie, and Pavlova (2017) found that commodity prices affect 10 out of 17 CDS spreads in emerging and frontier markets.
The relationship between emerging bond markets and global commodities is especially important for countries lacking liquidity and efficiency, such as the MENA and African regions. This result has practical implications. If you are an investor looking at emerging market debt, understanding the commodity exposure of the issuing country is not optional. It is essential.
Bond yields in emerging economies are influenced by global risk appetite and liquidity conditions. But the weakness of emerging markets is not uniform. It depends on country-specific factors. External conditions explain many of the movements in emerging markets bond index spreads, but domestic variables matter too.
The Dollar Effect (Again)
The U.S. dollar keeps showing up as a significant factor. In the equity regressions, the dollar index has a consistently negative and significant coefficient. A stronger dollar tends to hurt emerging market equities.
This creates an interesting dynamic for commodity investors. Commodities and the dollar tend to move in opposite directions. When the dollar weakens, commodity prices often rise, which tends to be positive for emerging market equities. When the dollar strengthens, commodity prices often fall, putting pressure on emerging markets.
So the dollar acts as a transmission mechanism. It amplifies the commodity effect in both directions. Investors holding both commodity futures and emerging market equities are essentially making a correlated bet on dollar weakness, whether they realize it or not.
Trading Opportunities
The chapter concludes that there are important trading opportunities between global commodity price changes and emerging equity and bond markets. This is especially true for countries lacking liquidity and efficiency, such as those in the MENA and African regions.
From a practical perspective, institutional investors can use the predictive ability of U.S.-listed global commodity futures when assessing investment instruments in global financial markets. Commodity futures prices react to news and changes in economic conditions faster than consumer and spot prices. Their trading hours cover extended days and hours per week. This speed advantage means that commodity futures can serve as leading indicators for emerging market performance.
The Big Picture Summary
Here is what Chapter 19 boils down to:
U.S.-listed commodity price movements have sizable contemporaneous effects on the business cycle of emerging market countries. But the effects differ among emerging market groups and across different commodities.
Increased energy prices are associated with improving emerging market business cycles, except for African countries. Africa’s relationship with energy commodities is different, possibly because many African economies are net energy importers.
Increasing metals prices show an almost consistently positive effect on GDP of emerging nations. 19 out of 22 countries benefit.
Agricultural commodities have the most impact on Latin American nations. This lines up with the agricultural base of many Latin American economies.
The U.S. dollar is a critical control variable. Ignoring dollar movements will give you misleading results about commodity-emerging market relationships.
There are real trading opportunities in the link between commodity futures and emerging market equity and bond markets, especially in less liquid and less efficient markets.
My Take
This chapter is not the easiest read in the book. It is heavy on regression tables and statistical tests. But the core insights are valuable.
The main lesson for investors: do not treat emerging markets as a monolithic asset class, and do not treat commodities as one either. The intersections between specific commodities and specific emerging market regions create a matrix of relationships that you can use to make better allocation decisions.
If you are long Brazilian equities, understanding the agricultural commodity outlook is important. If you hold MENA bonds, energy prices are your key risk factor. If you want broad emerging market exposure, the dollar is the common thread that ties it all together.
The chapter also makes a strong case for looking at commodity futures as forward-looking indicators. They move faster than spot prices and they reflect expectations about future economic conditions. For anyone trying to get ahead of emerging market trends, commodity futures are a useful signal.
This concludes our three-part series on Chapter 19. Next up: Chapter 20 on commodity trading strategies and spectacular blowups.
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