currency at a specified price (exchange rate). This is precisely what a foreign exchange option
provides.
The party retaining the option is the option buyer; the party giving the option is the option
seller (or writer). The exchange rate at which the option can be exercised is called the exercise
price or strike price. The buyer of the option must pay the seller some amount, called the option
price or the premium, for the rights involved.
The important feature of a foreign exchange option is that the holder of the option has
the right, but not the obligation, to exercise it. He will only exercise it if the currency moves in a
favorable direction. Thus, once you have paid for an option you cannot lose, unlike a forward
contract, where you are obliged to exchange the currencies and therefore will lose if the
movement is unfavorable.
The disadvantage of an option contract, compared to a forward or futures contract is that
you have to pay a price for the option, and this price or premium tends to be quite high for
certain options. In general, the option’s price will be higher the greater the risk to the seller (and
the greater the value to the buyer because this is a zero-sum game). The risk of a call option
will be greater, and the premium higher, the higher the forward rate relative to the exercise
price; after all, one can always lock in a profit by buying at the exercise price and selling at the
forward rate. The chance that the option will be exercised profitably is also higher, the more
volatile is the currency, and the longer the option has to run before it expires.