see also Plain Vanilla Interest Rate Swap) Options on swaps. Theta The sensitivity of a derivative product's value to changes in the date, all other factors staying the same.

Options on interest rate swaps. The buyer of a swaption has the right to enter into an interest rate swap agreement by some specified date in the future. The swaption agreement will specify whether the buyer of the swaption will be a fixed-rate receiver or a fixed-rate payer. The writer of the swaption becomes the counterparty to the swap if the buyer exercises.