Understanding the Relationship Between Bond Yields and Currencies

 | Jun 23, 2021 10:02

Investors and traders have been closely tracking bond yields this year. This is because, in March 2021, the yield of 10-2 Year Treasury Yield Spread moved to 1.74%, a level it hadn’t matched since January 2020. Let’s look at why this happened and what’s the relationship between bond yields and currencies.

Why Did US Bond Yield Rise?/h2

With the onset of the pandemic in March last year, the Federal Reserve lowered its benchmark interest rate to prevent restrictions from completely crippling economic output across sectors. The Fed has no intention of raising rates, as long as inflation remains below the 2% mark. However, with inflation rising this year, investors became nervous about possible rate hikes and responded by selling off fixed income positions that favour higher-yielding assets, causing treasury prices to drop and, consequently, yields to rise.

After a period of rising yields, they did cool off from the 1.74% high, with the Fed reassuring markets that they would keep inflation under control without raising interest rates.

How Did the US Dollar Respond?/h2

Pandemic-hit 2020 was one of the most volatile years for the US dollar. The currency crashed in March 2020 as infections climbed. However, soon investors rushed to add US dollars to their portfolio, given the greenback’s safe-haven appeal. The US Currency Index (DXY) spiked 8% from its March 9 lows to a high of 102.99 on March 20. Subsequent uncertainties around virus waves, vaccine rollouts and a global economic recovery led to tremendous US dollar volatility.

In March 2021, when US Treasury yields hit highs, DXY mirrored the rally, rising from 90 to 93. Is there a link between the rally in the US dollar and the Treasury market? And how should forex traders set positions when treasuries fluctuate?

Correlation Between Bond Yields and Currencies/h2

Economic Activity at the Centre of the Equation/h3

The demand for a currency is inherently linked to the performance of the domestic economy. A stable economy with a mature capital market will attract more foreign investments, which increases demand for its currency. Traders will also sell their other currency holdings to gain exposure to that currency, further boosting demand for the currency and its exchange rate.

Take for example what happened to the EUR/USD pair in 2019. The Euro was plagued by depreciating forces from its member nations. A recession in Italy, the widespread Gilet-Jaunes protests in France, and the uncertainty of prolonged Brexit negotiations made the Eurozone less attractive. Germany, the primary driver of the EU economy, barely managed to expand, posting GDP growth of just 0.6% in 2019 (down from 2.5% in 2017 and 1.5% in 2018). All these factors caused the EUR/USD to decline through the year, and the pair ended 2019 having shed 3.6%.

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The domestic economy also influences the central bank’s monetary policy and interest rate decisions. When economic activity is low, central banks attempt to stimulate the flow of money. This monetary easing is done through purchasing government treasuries and other securities (like corporate bonds). This increases bond prices, which exerts press on bond yields (which is calculated by dividing the bond’s coupon payments by its market price). It also increases the supply of money in the economy, which exerts pressure on its exchange rate.

On the other hand, central banks raise interest rates as the economy revives from a recession. This is done to prevent overheating and high inflation rates. As the central bank raises interest rates, both bonds yields and the currency’s exchange rate also begin climbing.

Direct Relationship/h3

While the state of the economy is a major link between yields and forex rates, a more direct relationship stems from investing activity. Higher bond rates and lower bond prices attract investments from other regions, boosting the country’s currency. The difference in the interest rates between two countries defines the relative attractiveness of owning and holding one country’s treasury over another. This interest rate differential incentivises investors to borrow money in a low-rate environment and invest in a high yielding one. This strategy, known as carry trade, can be a significant determinant of currency movements.

What Do All These Mean for Forex Traders?/h2

Forex traders are not as concerned with the present price level of the currency. Rather they are interested in how it might move in the near future. Forex traders can predict how currencies might move by monitoring yield spreads or rate differentials.