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💵Principles of Macroeconomics Unit 16 Review

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16.1 How the Foreign Exchange Market Works

💵Principles of Macroeconomics
Unit 16 Review

16.1 How the Foreign Exchange Market Works

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
💵Principles of Macroeconomics
Unit & Topic Study Guides

The foreign exchange market is a global powerhouse, enabling international trade and investment. It's where currencies are bought, sold, and exchanged, with exchange rates determined by supply and demand. This market never sleeps, operating 24/5 across time zones.

International investments come in various forms. Foreign direct investment involves long-term commitments in physical assets abroad. Portfolio investments are shorter-term financial asset purchases. Hedging strategies help manage currency risks, protecting businesses from exchange rate fluctuations.

Foreign Exchange Market Fundamentals

Role of foreign exchange market

  • Facilitates the buying, selling, and exchanging of currencies on a global scale
  • Determines exchange rates between currencies based on the forces of supply and demand (U.S. Dollar, Euro, Japanese Yen)
  • Enables international trade by allowing businesses to buy and sell goods and services across borders (exports, imports)
  • Facilitates capital flows between countries, supporting international investment and financial transactions
  • Represents the largest financial market globally, with trillions of dollars in daily trading volume
  • Operates continuously, 24 hours a day, 5 days a week, across multiple time zones

Types of international investments

  • Foreign direct investment (FDI) involves investing in physical assets or acquiring a significant stake in a foreign company (factories, real estate)
    • Represents a long-term commitment to the host country
    • Provides the investor with control over the investment and its operations
  • Portfolio investment involves investing in financial assets, such as stocks, bonds, or mutual funds, in a foreign country
    • Characterized by shorter-term horizons and higher liquidity compared to FDI
    • Investor has no direct control over the underlying assets or company operations
  • Hedging involves implementing strategies to minimize the risk of adverse price movements in foreign exchange markets
    • Utilizes derivatives like forward contracts, futures, and options to manage currency risk (currency swaps)
    • Helps businesses and investors protect against potential losses due to currency fluctuations

Exchange Rates and Currency Fluctuations

Currency fluctuations and exchange rates

  • Currency appreciation occurs when the value of a currency increases relative to another currency
    • Driven by higher demand for the currency or lower supply in the foreign exchange market
    • Results in an exchange rate where more of the other currency is required to purchase one unit of the appreciating currency (1 USD = 0.85 EUR to 1 USD = 0.90 EUR)
  • Currency depreciation occurs when the value of a currency decreases relative to another currency
    • Caused by lower demand for the currency or higher supply in the foreign exchange market
    • Results in an exchange rate where less of the other currency is required to purchase one unit of the depreciating currency (1 USD = 110 JPY to 1 USD = 100 JPY)
  • Factors influencing currency appreciation and depreciation include:
    1. Interest rates: Higher interest rates attract foreign investment, increasing demand for the currency
    2. Inflation rates: Lower inflation relative to other countries can lead to currency appreciation
    3. Economic growth: Stronger economic performance can boost demand for a country's currency
    4. Political stability: Political instability can lead to currency depreciation as investors lose confidence
    5. Trade balances: A trade surplus can lead to currency appreciation, while a trade deficit can cause depreciation
    6. Purchasing power parity: The theory that exchange rates should adjust to equalize the purchasing power of different currencies

Economic impact of currency strength

  • Stronger currency (appreciation) effects:
    • Domestic consumers benefit from increased purchasing power for imported goods and services (cheaper electronics, travel)
    • Domestic exporters may face challenges as their products become more expensive in international markets, potentially reducing competitiveness
    • Foreign investors find investments in the country with the stronger currency more attractive due to higher returns
  • Weaker currency (depreciation) effects:
    • Domestic consumers experience decreased purchasing power for imported goods and services (more expensive fuel, imported food)
    • Domestic exporters may gain a competitive advantage as their products become cheaper in international markets, potentially boosting exports
    • Foreign investors may find investments in the country with the weaker currency less attractive due to lower returns
  • Central banks and governments may intervene in foreign exchange markets to manage currency fluctuations and maintain stability
    • Monetary policies, such as adjusting interest rates, can influence exchange rates (quantitative easing)
    • Fiscal policies, such as government spending and taxation, can also impact currency strength (stimulus packages)

Market Characteristics

  • Liquidity: The foreign exchange market is highly liquid, allowing for easy buying and selling of currencies
  • Volatility: Exchange rates can experience significant fluctuations due to various economic and political factors
  • Spot market: The market for immediate exchange of currencies at the current market rate
  • Arbitrage: The practice of taking advantage of price differences in different markets to make a profit