Đề 1

Understanding Exchange Rates and Foreign Exchange Operations

Welcome to this comprehensive course on foreign exchange (FX) fundamentals. Whether you are a finance student, a business professional, or simply curious about how currencies are priced and traded, this module will guide you through the key concepts, terminology, and practical applications that appear in typical quiz questions.

1. What Is an Exchange Rate?

An exchange rate (or tỷ giá hối đoái in Vietnamese) is the price at which one currency can be exchanged for another. It represents the value of a unit of foreign currency expressed in terms of the domestic currency, or vice‑versa. For example, when we say USD/VND = 25,500, we mean that one US dollar can be bought for 25,500 Vietnamese đồng.

Key points to remember:

• Currency pair: The first currency is the base currency, the second is the quote currency.
• Price quotation: The number indicates how many units of the quote currency are needed to purchase one unit of the base currency.
• Market‑driven: Exchange rates fluctuate continuously based on supply‑and‑demand, interest‑rate differentials, political events, and market expectations.

2. Direct vs. Indirect Quotation

Quoting methods differ by which currency is expressed in terms of the other:

• Direct quotation (yết giá trực tiếp): The foreign currency is expressed in domestic units. In Vietnam, the common quote USD/VND = 25,500 is a direct quote because the price of one US dollar is shown in đồng.
• Indirect quotation (yết giá gián tiếp): The domestic currency is expressed in foreign units. For example, VND/USD = 0.000039 would be an indirect quote.

Understanding the distinction helps you read market data correctly and avoid costly mistakes when converting amounts.

3. Bid and Ask Prices – How Banks Quote FX

When a bank publishes a range such as USD/VND = 25,300 – 25,500, it is providing two prices:

• Bid price (buying rate): The rate at which the bank buys foreign currency from you. In the example, the bank buys USD at 25,300 VND per USD.
• Ask price (selling rate): The rate at which the bank sells foreign currency to you. Here, the ask is 25,500 VND per USD.

Therefore, if you want to purchase USD with VND, you will use the higher ask price (25,500 VND/USD). The difference between bid and ask is called the spread, which compensates the bank for providing liquidity.

4. The Foreign Exchange Market (Forex) – Characteristics

The FX market is unique compared to other financial markets:

• Global and decentralized: Trading occurs over the counter (OTC) across continents, 24 hours a day, five days a week.
• Participants: Central banks, commercial banks, corporations, hedge funds, retail traders, and even governments.
• Continuous operation: Because of time‑zone differences, the market never truly closes, providing constant price discovery.
• Supply‑and‑demand driven: Currency values react to trade flows, capital movements, interest‑rate expectations, and geopolitical news.

5. Balance of Payments and Currency Pressure

The balance of payments records a country’s transactions with the rest of the world. A persistent current‑account deficit (more imports than exports) creates a higher demand for foreign currency. This pressure can lead to:

• Increased cầu ngoại tệ (demand for foreign currency).
• Rising foreign‑exchange rates (the foreign currency becomes more expensive).
• Potential depletion of foreign‑exchange reserves if the central bank intervenes.

Thus, when a country runs a regular deficit, you are likely to see the foreign currency price rise, not fall.

6. Forward Contracts – Hedging Future Currency Risk

A forward contract (hợp đồng kỳ hạn) is an agreement to exchange a specified amount of currency at a predetermined rate on a future date. Companies use forwards to lock in costs and protect against adverse movements. Example:

• A Vietnamese importer must pay USD 100,000 in three months. To avoid the risk of the USD appreciating, the importer enters a forward contract with a bank to buy USD at today’s agreed rate, payable in three months.

Key features:

• Rate is fixed at contract inception.
• Obligation is binding – both parties must settle on the agreed date.
• Used for budgeting, cash‑flow certainty, and risk management.

7. Options – The Right, Not the Obligation

An option (hợp đồng quyền chọn) gives the holder the right, but not the obligation, to buy (call) or sell (put) a currency at a predetermined strike price before or at expiration. Unlike forwards, options provide flexibility:

• If the market moves favorably, the holder can let the option expire and transact at the better spot rate.
• If the market moves unfavorably, the holder can exercise the option and lock in the agreed rate, paying only the premium.

Options are valuable for companies that need protection but also want to benefit from potential favorable movements.

8. Arbitrage – Exploiting Price Differences

Arbitrage involves buying an asset in one market where the price is lower and simultaneously selling it in another market where the price is higher, capturing the spread as profit. In FX, a classic example is:

• Buy USD in Market A at a low price.
• Sell the same amount of USD in Market B at a higher price.

This activity is called currency arbitrage or kinh doanh chênh lệch tỷ giá. It helps align prices across markets, contributing to market efficiency.

9. Summary of Core Concepts

• Exchange rate: Price of one currency in terms of another.
• Direct quote: Foreign currency expressed in domestic units (e.g., USD/VND).
• Bid/Ask spread: Bank’s buying price vs. selling price.
• Forex market: 24‑hour, global, OTC market with diverse participants.
• Current‑account deficit leads to higher demand for foreign currency and upward pressure on its price.
• Forward contracts lock in rates for future transactions.
• Options provide the right, not the obligation, to exchange at a set rate.
• Arbitrage exploits price differentials to earn risk‑free profit.

10. Frequently Asked Questions (FAQ)

Q: Why do banks quote both a bid and an ask price?
A: The bid is the price at which the bank buys foreign currency, while the ask is the price at which it sells. The spread compensates the bank for the risk and service of providing liquidity.

Q: Can a company use both forwards and options together?
A: Yes. A common strategy is to buy a forward to lock in a minimum rate and purchase a call option to benefit from any favorable movement, creating a “collar” that limits downside while allowing upside potential.

Q: How does arbitrage affect exchange rates?
A: Arbitrage forces prices to converge. When traders spot a price gap, their trades reduce the lower price and increase the higher price until the discrepancy disappears.

11. Practical Exercise

Imagine you are a Vietnamese exporter expecting to receive USD 200,000 in six months. The current USD/VND rate is 25,400. Your CFO wants to protect the company against a possible rise in the VND (i.e., a fall in the USD price). Outline a hedging plan using either a forward contract, an option, or a combination of both. Explain the advantages and potential costs of each approach.

Write your answer in a short paragraph, then compare it with the solution provided by your instructor. This exercise reinforces the concepts of forward contracts, options, and risk management.