The use of financial derivatives to hedge against interest rate risk

Welcome to Interest Rate Risk Management!

Hello there! If the thought of interest rate derivatives makes your head spin, you are definitely not alone. Many students find this chapter of AFM intimidating because of the technical jargon. However, at its heart, this topic is just about insurance. Companies want to know exactly how much their debt will cost or how much their savings will earn, even if the central bank changes the rules tomorrow.

In this guide, we will break down the four big tools used to manage interest rate risk: FRAs, Futures, Options, and Swaps. By the end of these notes, you’ll see that they are just different ways of "locking in" a price. Let's dive in!

1. Forward Rate Agreements (FRAs)

An FRA is the simplest derivative. It is a contract between a company and a bank to fix an interest rate for a specific period in the future. Think of it like booking a hotel room in advance: you agree on the price today, even though you won’t stay there for another three months.

How it works:

If the actual market rate ends up being higher than your FRA rate, the bank pays you the difference. If the market rate is lower, you pay the bank. Either way, your net cost stays the same.

Common Terminology:

You might see terms like "3-v-9 FRA." Don't let this scare you! It simply means:
• The hedge starts in 3 months.
• The hedge ends in 9 months.
• Therefore, the loan duration is 6 months (9 minus 3).

Quick Review:
• Fixed Rate: You know your costs upfront.
• No flexibility: You are "locked-in." If rates move in your favor, you can't benefit from it.

2. Interest Rate Futures

Futures are similar to FRAs but are traded on an exchange. This makes them more standardized. Think of them as the "supermarket" version of a hedge—everything comes in pre-set sizes and dates.

The "Golden Rule" of Futures:

This is the most important thing to remember for your exam: Futures prices move inversely to interest rates.
• If interest rates rise, the price of the Future falls.
• If interest rates fall, the price of the Future rises.

How to Hedge with Futures (The 4-Step Process):

1. Setup: Decide whether to Buy or Sell.
Tip: If you are borrowing money, you are worried rates will rise (and prices will fall). So, you Sell futures now.
2. Number of Contracts: Use the formula:
\( \text{No. of Contracts} = \frac{\text{Loan Amount}}{\text{Contract Size}} \times \frac{\text{Loan Duration}}{\text{3 months}} \)
3. The Result: Calculate the gain or loss on the futures market.
4. Net Outcome: Combine the futures gain/loss with the actual interest paid to the bank.

Key Term: Basis

Basis is simply the difference between the current cash interest rate and the futures price. As we get closer to the expiry date of the future, the basis shrinks to zero. Don't worry if this seems tricky at first; just remember it as the "gap" that gradually disappears.

Key Takeaway: Futures allow you to fix a rate, but because you can only buy a whole number of contracts, the hedge is rarely 100% perfect.

3. Interest Rate Options

Options are the "Premium" version of hedging. They give you the right, but not the obligation, to fix your interest rate. It’s like buying car insurance: you pay a fee (the premium) to be protected if something goes wrong, but if nothing happens, you just enjoy the benefit of the current market.

Types of Options:

• Cap: Used by borrowers. It sets a maximum interest rate.
• Floor: Used by lenders. It sets a minimum interest rate.
• Collar: This is a clever trick to save money. You buy a Cap and sell a Floor. By selling the Floor, you receive a premium that helps pay for the Cap. The downside? You are "collared" between a maximum and a minimum rate.

Why choose Options?

If interest rates move in your favor (e.g., they go down when you are a borrower), you can simply let the option expire and pay the lower market rate. You only use the option if rates go against you.

Did you know? The main reason companies don't use options all the time is the Premium. It must be paid upfront and is non-refundable, even if you never use the option!

4. Interest Rate Swaps

A swap is an agreement between two parties to exchange interest rate payments. Usually, one party has a Fixed rate loan but wants a Floating rate, and the other party has a Floating rate but wants Fixed.

The "Comparative Advantage" Concept:

Often, a high-credit-rating company can get a better deal in both fixed and floating markets than a smaller company. However, they might have a relatively bigger advantage in one specific market. By swapping, both parties can end up with a lower interest rate than they could have achieved alone.

Step-by-Step Swap Calculation:

1. Identify the "Quality Spread": Find the difference between what the two companies would pay in the Fixed market vs. the Floating market.
2. Calculate Total Gain: This is the difference between the two spreads.
3. Allocate the Gain: Subtract any bank fees, then split the remaining gain as instructed in the question.
4. Final Result: Show that both companies are paying less than their original target rate.

Key Takeaway: Swaps are long-term tools. While Futures and Options usually cover months, Swaps can last for years.

Summary & Common Mistakes to Avoid

Quick Review Box:

• FRAs: Simple, fixed, no premium, but no flexibility.
• Futures: Traded on exchange, requires margin payments, inverse price relationship.
• Options: Ultimate flexibility, protects against bad moves, lets you gain from good moves, but costs a premium.
• Swaps: Long-term exchange of interest types, based on comparative advantage.

Common Mistakes:

1. The Wrong Direction: Students often "Buy" futures when they should "Sell." Remember: If you are borrowing, you want to protect against rates going UP (Prices going DOWN), so you SELL.
2. Forgetting the Premium: When calculating the net cost of an Option, always remember to subtract the premium you paid at the start.
3. Miscalculating the Duration: In the Futures formula, always check if the loan is for 3, 6, or 9 months. The standard contract is usually based on 3 months.

You've reached the end of this section! Risk management is one of the most technical parts of AFM, but if you master these four tools, you are well on your way to passing. Keep practicing the calculations, and the logic will start to feel like second nature!