The use of financial derivatives to hedge against forex risk

Welcome to Forex Risk Management!

Hi there! Welcome to one of the most important parts of the Advanced Financial Management (AFM) syllabus. If you've ever traveled abroad and noticed that your money bought less than it did last year, you’ve experienced foreign exchange (Forex) risk. Now, imagine you are a huge multinational company moving millions of dollars across borders—those small currency shifts can turn a massive profit into a painful loss!

In this chapter, we are going to learn about Financial Derivatives. Don't let the name scare you! A derivative is simply a financial "tool" that gets its value from something else (in this case, the exchange rate). We will look at Currency Futures, Currency Options, and Currency Swaps. By the end of these notes, you'll see these aren't just complex formulas, but clever ways to protect a business.

1. Currency Futures

Think of a Currency Future as a "firm promise." It is a standardized contract traded on an exchange to buy or sell a specific amount of currency at a set price on a set date in the future.

How do Futures work?

Imagine you are buying a house in three months, and you are worried the price will go up. You sign a contract today to lock in the price. That is exactly what a future does for currency.

Key Difference from Forwards: Unlike Forward contracts (which are private deals with a bank), Futures are traded on an open market (like the LIFFE or CME). They are standardized, meaning the contract sizes and dates are fixed by the exchange.

Step-by-Step: Hedging with Futures

When you get a futures question in the exam, follow these steps:

1. Setup: Decide if you need to buy or sell futures. (If you are receiving foreign currency, you want to sell it. If you are paying it, you want to buy it).
2. Contract Size: Calculate how many contracts you need.
\( \text{Number of Contracts} = \frac{\text{Total Amount to Hedge}}{\text{Contract Size}} \)
3. Tick Value: Understand the "tick" (the smallest price movement).
4. Closing out: On the transaction date, you "cancel out" your futures position and calculate the profit or loss. This profit/loss should offset the movement in the Spot Market.

What is Basis?

Basis is simply the difference between the Spot Rate and the Futures Price.
\( \text{Basis} = \text{Current Spot Rate} - \text{Current Futures Price} \)
As we get closer to the contract expiry date, the Basis "decays" or reduces to zero. This is a common concept tested in AFM calculations.

Quick Review: Futures lock you into a price. If the exchange rate moves in your favor, you don't get the benefit, but if it moves against you, you are protected. It's about certainty.

2. Currency Options

If Futures are a "firm promise," Currency Options are like Insurance. They give you the right, but not the obligation, to trade currency at a set price (the Strike Price).

Call vs. Put Options

This is where students often get confused. Let's make it simple:
- Call Option: The right to BUY the currency.
- Put Option: The right to SELL the currency.

Memory Aid: Think of a "phone call" to "call in" (buy) goods, and "putting" something down on a table to "put it away" (sell it).

Why choose Options?

Options are fantastic because they offer flexibility.
- If the exchange rate moves against you, you use your option (Exercise it) and stay protected.
- If the exchange rate moves in your favor, you simply throw the option away (Abandon it) and trade at the better market rate!

The Catch: Just like car insurance, you have to pay a Premium upfront. This premium is non-refundable, whether you use the option or not.

Common Mistake to Avoid

Don't forget to subtract the premium when calculating your final net result! The premium is a cost that reduces your total gain or increases your total payment.

Key Takeaway: Options provide a "floor" or "ceiling" for your costs while allowing you to benefit from "good" exchange rate movements. They are more expensive than futures because of the premium.

3. Currency Swaps

Swaps are usually used for longer-term risk management (longer than a year). In a Currency Swap, two parties exchange principal and interest payments in different currencies.

The "Borrowing Shoes" Analogy

Imagine you have very large feet and your friend has very small feet. You want to buy small shoes (because they are on sale), and your friend wants to buy large shoes. You buy the large shoes for your friend, they buy the small shoes for you, and then you swap them!

In AFM, this happens because a UK company might get a better interest rate in the UK, while a US company gets a better rate in the USA. They borrow where they have a Comparative Advantage and then swap the loans.

The Three Stages of a Swap:

1. Initial Exchange: Swap the principal amounts at the start at the current spot rate.
2. Interest Payments: During the swap, you pay interest in the currency you received, and your partner pays interest in the currency they received.
3. Final Exchange: At the end, you swap the principal amounts back at the same original rate. This removes any exchange rate risk for the principal!

Did you know? Currency swaps were famously pioneered in the 1980s by the World Bank and IBM. They are now a multi-trillion dollar market!

4. Comparison Summary: Which tool should I use?

In your AFM exam, you might be asked to advise a company on which derivative to use. Here is a quick guide:

Use Futures if:

- You want a fixed price and don't want to pay an upfront premium.
- You are okay with not benefiting from favorable market movements.
- The transaction size matches the standard contract sizes.

Use Options if:

- You want to be protected but still want to "win" if the exchange rate moves in your favor.
- You have the cash flow to pay the Premium upfront.
- There is uncertainty about whether the transaction will actually happen (e.g., you've submitted a tender for a project).

Use Swaps if:

- You have a long-term debt or investment (e.g., 5 years).
- You can find a partner with a "comparative advantage" to help lower your borrowing costs.

Final Tips for the Exam

1. Read the Currency Carefully: Always check if the quote is "Currency A per Currency B." Mixing this up is the most common reason for losing marks.
2. Show Your Workings: Even if your final number is slightly off due to rounding, the examiner can give you almost full marks if your process is correct.
3. Don't Panic: If the math feels overwhelming, write down the theory. Explain why a company would use a future versus an option. Words carry marks too!

You've got this! Forex risk management is just about using the right tool for the right job. Keep practicing those past paper questions!