Hedging Basics: Swaptions

Interest rate options are excellent tools to use to mitigate interest rate exposure.  One robust structure that is used to reduce exposure to monthly periods of interest rate volatility is the interest rate swaption.  This instrument combines the protection of a swap, with the flexibility of a European style option.

Interest Rate Swap
An interest rate swap is a fixed for floating swap which allows an investor or corporate treasurer to reduce their exposure to interest rates by selling or buying a swap.  A pay fixed swap reduces exposure to climbing interest rates while a pay float swap reduces exposure to declining interest rates.

European Option
A European style option is an option in which the purchaser of the option can only exercise the option on the expiration date.  The option is the right but not the obligation to purchase a financial instrument as a specific date in the future.  The strike price is the price at which the buyer and seller of the option agree to buy/sell the financial product.

Interest Rate Swaption
An interest rate Swaption is the right but not the obligation to purchase an interest rate swap on a specific date.  On the expiration date, the owner of the swaption has the right to purchase the swap at the strike price.  A swaption payout profile is similar to a European option.

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