The world of financial trading is extremely complex. Prices change from time to time; technical indicators change, and there seems to be a lot of financial news. It becomes quite hard to stay up-to-date and focused as an investor. One way to simplify market analysis is by understanding a concept many traders overlook: market correlation.
In South Africa, understanding how different assets move in relation to one another is a practical necessity. The USD/ZAR currency exchange, gold, XAU/USD, as well as the local stock markets of the country, have a relationship with each other through the strength of the economy worldwide.
This article will discuss the correlation between the South African Rand, Gold, and the JSE. We will explore how brokers like CMTrading provide the platforms to access these markets, and how understanding correlation can be the difference between a winning strategy and an unexpected loss.
What Does Market Correlation Mean?
Before discussing any individual asset, we need to understand the meaning of the term “correlation.”
Positive Correlation: The assets change in the same direction. When Asset A increases, Asset B will also most likely increase at the same time.
Negative Correlation (or Inverse): The assets change in different directions. When Asset A increases, Asset B will fall.
Zero Correlation: No meaningful relationship exists between the assets.
And the intensity of the link between them is calculated using the correlation coefficient, whose value can range between -1.00 and +1.00.
+1.00: Perfect positive correlation (identical change in price);
-1.00: Perfect negative correlation (change in prices in precisely opposite directions);
0.00: Absence of correlation.
In practice, a coefficient of either -0.70 or +0.70 would be considered a strong connection. For example, historically, gold and USD/ZAR have often displayed a strong inverse relationship.
The Golden Relationship (Gold vs. The Rand)
South Africa plays an important role in relation to the world economy since it is one of the biggest producers of precious metals, like Gold and Platinum. Thus, the price dynamics of these assets are directly connected to the dynamics of the South African Rand (ZAR).
The Negative Correlation
Historically, gold prices and USD/ZAR have often shown an inverse relationship, although the strength of that relationship can vary depending on broader market conditions.
Rising gold prices can support the Rand by improving South Africa’s export earnings, although other economic and political factors also influence the currency.
Why does this happen?
One reason for this relationship is South Africa’s role as a major exporter of precious metals. South Africa exports a considerable amount of gold products. When the price of this commodity is higher in terms of US Dollars, South African companies earn more money while producing the same amount of the precious metal. Foreign buyers have to pay for it in ZAR, thus creating a high demand for the South African currency.
Correlation in Real Time
Imagine you are analyzing a chart of the USD/ZAR pair. The correlation coefficient in the bottom pane has a value of -0.94. This indicates an extremely high degree of inverse correlation, meaning the two assets have historically moved very closely in opposite directions during the measured period.
However, the trader needs to note the possibility of divergence. If there is a bearish divergence in the USD/ZAR RSI, it may signal weakening upward momentum in the currency pair, which could support a bullish outlook for gold if the historical relationship remains intact.
Trading Strategies with CMTrading
The ability to understand correlations leads to very complex and interesting trading strategies. CFDs (Contracts for Difference) on Forex, Commodities, and Stocks are offered by brokers such as CMTrading, enabling traders to take advantage of these relationships under one roof.
Strategy 1: Hedge Risk
In case you are long USD/ZAR (bets on Rands weakening), yet you are concerned about a sudden increase in the price of gold, you can decide to go long Gold.
The logic here is that if gold prices spike up, USD/ZAR would decline (losing your bet)
Your best bet would be to buy Gold. Your Gold position makes a profit, which cancels out any loss in your USD/ZAR trade.
Strategy 2: Confirmation Signal
A correlation can be used to confirm a certain signal.
Technical Breakout in Gold XAU/USD indicates an uptrend.
You can decide to go short on USD/ZAR (go long ZAR)
High negative correlation means that if your analysis about Gold is true, then there is a very high chance that the Rand may strengthen. You have basically traded the exact commodity from two instruments.
Strategy 3: Pairs trading
If the correlation between Gold and the Rand ceases to hold temporarily (for example, gold goes up, but the Rand fails to appreciate), then the pairs trader can place a trade based on the expectation that the correlation will come back to life. Pairs traders look for temporary deviations from historically observed relationships and trade based on the expectation that those relationships may normalize over time.
Local Perspective (Gold vs. SA Stocks)
Correlation does not end at the level of the currency. The JSE is highly weighted towards resource stocks, namely the Gold Mining Giants, such as AngloGold Ashanti and Harmony Gold.
A Double-Edged Correlation
Whenever the Gold price goes up, the gold mining stocks should follow due to skyrocketing margins. However, there is one little currency catch.
The good side here is that the gold price increases, thus revenues increase for mining companies, causing stocks to rise in price.
A downside, however, is that a stronger Rand can increase operating costs in local currency terms for mining companies, potentially reducing some of the benefits of higher gold prices.
Nevertheless, in general terms, the relationship is positive. The higher the global uncertainty, the more people tend to seek shelter. Investors purchase Gold and Gold Stocks. For those who trade South African shares on CMTrading, it makes sense to watch the XAU/USD chart carefully. A strong breakout in gold prices may provide a supportive backdrop for South African resource stocks, although individual company performance can vary.
Applying Correlation in Trading
How does understanding correlation help traders? It allows answering the most critical question: why does your trade move?
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Avoid Double Risk
Traders should understand how correlated positions interact. Holding positions in negatively correlated assets may partially offset risk, while holding multiple positively correlated assets can increase overall exposure. Understanding these relationships helps traders avoid unintentionally concentrating risk in a single market theme.
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Divergence in Correlation
It may sometimes happen that correlation “does not work.” For instance, in case the US Federal Reserve suddenly hikes interest rates significantly:
Gold prices will likely fall (interest rates reduce demand for non-interest-generating assets). USD/ZAR may not drop as it was initially expected due to a higher interest rate spread.
Action: When the correlation fails, it is better to exit this trade and trade that asset whose story is more compelling (for example, simply the strength of the US Dollar).
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The Economic Calendar
Timing is crucial. Correlations often become more noticeable during the overlap between the London and New York trading sessions, when market liquidity and the impact of major economic releases tend to increase. This is because US economic news (for example, Non-Farm Payrolls or Consumer Price Index) is released at this time. Since these economic figures influence the US Dollar, they can also have a significant impact on Gold prices and, by extension, the Rand.
Risk Management & Technology
Trading in correlated assets means using leverage. And when one uses leverage, the correlation risk is greatly enhanced. A little movement in Gold may lead to a big movement in the USD/ZAR pair, leading to your position being stopped out due to your being on the wrong side of the trade.
Using a trading platform like CMTrading offers the following options to help manage this kind of risk:
- Stop-Loss Orders: Must be used when dealing with volatile pairs.
- Advanced Charting: Put the Gold charts on top of USD/ZAR charts to show how inversely correlated the two are in practice.
- Economic Calendars: Do not trade any of these correlations when there is “High Impact” news scheduled, unless you have a very specific trading plan based on such news.
Conclusion
South African financial markets are not separate from each other. The Rand, Gold, and stocks all form a symphony. And should the tune change on the global risk front, then they will all play together.
Correlation, for the trader, is a guide. With correlation, you can insure against the unexpected, validate your trades, and guard yourself from unintentional overexposure.
Knowing that changes in the price of gold often influence the value of the Rand and can affect JSE resource-related stocks helps traders make more informed decisions. Whether you are a beginner using CMTrading or an experienced market analyst, understanding market correlations can help you make more informed trading decisions.
