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The Momentum of the U.S. Dollar: Understanding Its Strength

I. Introduction

The U.S. dollar is experiencing a period of strength, creating both risks and opportunities for investors. The dollar’s value relative to other currencies is impacting international sales, especially for companies that do business overseas. This dynamic is also influencing the performance of certain stocks and Exchange-Traded Funds (ETFs)​.

Fig 1: Chart of the USD Index

The U.S. dollar has experienced significant momentum in recent times, reaching a 20-year high in value​. This development has occurred amidst a complex matrix of domestic and global factors that have contributed to the strength of the dollar, affecting not just the U.S. but the global economy. This article aims to explore these factors, including the role of the U.S. as a safe-haven currency, interest rate hikes, and ongoing geopolitical issues, particularly the conflict in Ukraine.

II. The Current State of the U.S. Dollar

The U.S. Dollar Index (USDX), which tracks the value of the dollar against a basket of six key foreign currencies, has been in a solid uptrend since the start of 2022, hitting new 20-year highs. The dollar’s value cooled in the final quarter of 2022 as the Federal Reserve tackled inflation with interest rate increases. So far in 2023, the path forward for the U.S. dollar is uncertain, with implications for inflation, international trade, and technology stocks​.

III. Factors Behind the Dollar's Strength

Several factors have contributed to the dollar's strength. These include:

  1. Fed Interest Rate Increases: Over the past year, the Fed has raised interest rates eight times in a bid to curb inflation. Higher interest rates increase the demand for the dollar from international investors seeking yield​
  2. The Dollar as a Safe Haven: The dollar is viewed as a safe haven during periods of economic uncertainty and instability. This status has been particularly important given recent global economic downturns and banking crises​
  3. High-Yield Savings Accounts: Investors waiting for a better time to buy stocks can currently earn an interest rate of 4% or higher on the dollar in top high-yield savings accounts. These accounts are essentially risk-free for balances of up to $250,000 per bank, as long as the bank is insured by the Federal Deposit Insurance Corporation (FDIC)​. 

IV. The Dollar's Strength Relative to Other Currencies

The dollar has gained strength over the past 12 months relative to major currencies such as the euro, Japanese yen, British pound, Canadian dollar, Swedish krona, and Swiss franc. The strength of the dollar will continue to be tied closely to U.S. inflation and interest rates​.

V. Impact on U.S. Companies

A strong dollar can pose challenges for U.S. companies doing business overseas, as it can erode the competitiveness of their products in markets where the local currency is cheaper than the dollar. This effect is particularly pronounced for tech stocks, which generate about 58% of revenue outside the U.S​.

The U.S. Dollar as a Safe-Haven Currency

Historically, the dollar has been the dominant global reserve currency since World War II, used extensively by central banks worldwide for international trade and financial transactions. This status comes from its reliability and the perception of the U.S. as a stable economic power. In times of political or military uncertainty, the U.S. dollar strengthens, given its status as a "safe-haven" currency​. The ongoing conflict in Ukraine has further amplified this effect, leading to a stronger dollar as investors seek stable places to park their money amid uncertainty​.

Continued Interest Rate Hikes

The strength of the dollar, as measured by the U.S. dollar index (USDX), is relative to other currencies. A key domestic factor that has contributed to the dollar's strength is the continued interest rate hikes in the U.S. to combat inflation. Unlike other countries, the U.S. has raised interest rates far higher, given the relative strength of its economy. This policy has resulted in investor money being diverted away from other nations and into the U.S., further bolstering the dollar​.

The future path of interest rates is uncertain but is likely to influence the dollar's strength in 2023. The Federal Reserve may continue to adjust interest rates, even though the United Nations has urged a halt to increases to prevent a global recession. Some experts predict that the Fed will continue to raise rates through a good portion of 2023, as long as the U.S. economy does not fall into recession​.

The Impact of USD on Other Currencies: An Examination of Spillover Effects

The United States Dollar (USD) is not just a currency; it is a global economic powerhouse that significantly influences the world's financial landscape. Its impact on other currencies, often referred to as 'spillover effects,' is a testament to its dominant role in international trade and finance.

The USD's influence is primarily due to its status as the world's primary reserve currency. Central banks across the globe hold vast amounts of USD as part of their foreign exchange reserves. This position of the USD is further reinforced by its use in international trade, where it serves as the standard currency for commodity pricing, including oil, gold, and other raw materials.

The spillover effects of the USD on other currencies are multifaceted. When the USD strengthens, it often leads to a depreciation of other currencies. This depreciation can have both positive and negative impacts on a country's economy. On the positive side, a weaker local currency can boost exports by making them cheaper on the international market. However, on the downside, it can also increase the cost of imports and raise inflation.

Moreover, fluctuations in the USD can significantly impact emerging market economies. These economies often have debts denominated in USD. When the USD appreciates, it increases the debt burden of these countries, leading to potential economic instability. This was evident during the 'Taper Tantrum' in 2013 when anticipation of the US Federal Reserve reducing its quantitative easing program led to a rapid appreciation of the USD, causing turmoil in many emerging markets.

The USD's spillover effects also extend to global capital flows. A strong USD can lead to capital outflows from emerging markets as investors seek higher returns in the US. This can result in higher borrowing costs and financial instability in these markets.

However, it's important to note that the spillover effects are not always negative. A strong USD can also provide stability in times of economic uncertainty. As investors flock to the 'safe-haven' USD during economic downturns, it can help stabilize global financial markets.

In conclusion, the USD's impact on other currencies is profound, with significant spillover effects that can influence global trade, capital flows, and financial stability. Policymakers worldwide must therefore pay close attention to the movements of the USD and devise strategies to mitigate potential negative impacts while capitalizing on the opportunities it presents. As the world becomes increasingly interconnected, understanding the role of the USD and its spillover effects is more crucial than ever.

Geopolitical Issues and the Eurozone Economy

The ongoing conflict in Ukraine also plays a significant role in the dollar's strength. This geopolitical issue threatens to slow economic growth throughout Europe and potentially prolong the continent's energy crisis, thus indirectly contributing to the relative strength of the U.S. dollar. In addition, the Eurozone is suffering from weaknesses in several countries, further exacerbated by price increases in natural gas and oil and knock-on effects throughout the supply chain. These challenges have further contributed to the relative strength of the U.S. dollar compared to the euro​.

Impact on Precious Metals: The Case of Silver

The new momentum in the U.S. dollar has had significant effects on precious metals, particularly silver. The recent selloff in silver, which has seen the price drop significantly below $25 an ounce, is partially attributed to the new strength in the U.S. dollar​. However, market analysts believe that this trend is a short-term technical move and that the structural bull market for silver remains intact despite the dollar's strength​.


The momentum in the U.S. dollar is the product of multiple factors, both domestic and international. As the global economy continues to grapple with uncertainty and change, the strength of the U.S. dollar is likely to remain a key aspect of the economic landscape.