What it means
The defining feature of an option is the word optional. Unlike a forward or a future, where you are committed to transact at the agreed rate, an option lets you take the agreed rate only if it suits you.
That asymmetry is exactly what you pay the premium for. A call option gives the right to buy a currency at a set rate, and a put option gives the right to sell it.
An importer paying in euros typically buys a euro call, while an exporter receiving euros typically buys a euro put, so each side protects against the direction that would hurt them. The agreed rate is called the strike, and the premium depends mostly on how far the strike sits from the current market rate, how long the option runs and how volatile the currency pair has been.
A strike close to the current rate costs more because it is more likely to be worth exercising. Finance teams value options when the underlying exposure is uncertain.
If you are bidding for a contract priced in a foreign currency and might not win it, a forward would leave you committed to a currency trade you no longer need, whereas an option can simply be abandoned for the cost of the premium. The trade-off is cash out of the door on day one.
Premiums for a meaningful hedge can run to 1% to 3% of the amount covered, which is real money, and boards sometimes struggle with paying for protection that expires worthless in a quiet year.
In practice
Real-world examples.
Example
An engineering firm bids for a 4,000,000 pound contract in the UK and has a one in three chance of winning it. It buys a sterling put option rather than a forward, so that losing the bid costs only the premium instead of leaving it holding an unwanted currency commitment.
Example
A luxury watch retailer in New York imports Swiss stock and buys franc call options each January covering the year's expected purchases. In a year when the franc weakens, the options expire worthless and the buying team simply enjoys cheaper stock.
Example
A private equity fund agrees to buy a Canadian business with the price fixed in Canadian dollars and completion three months away. It buys a Canadian dollar call to cap the US dollar cost while the deal clears regulatory approval, accepting a premium as the price of certainty.
Formula
Calculation
Call option payoff at expiry = maximum of (spot rate - strike rate) or zero, multiplied by the notional amount
Net result = payoff - premium paid
Worked example: a US importer must pay 500,000 euros in six months and buys a euro call option with a strike of $1.1000 per euro. The premium is $0.02 per euro, so the upfront cost is 500,000 x $0.02 = $10,000.
At expiry the spot rate has risen to $1.1600, so the option is worth exercising. The payoff is 500,000 x ($1.1600 - $1.1000) = $30,000. Buying euros at the market rate costs 500,000 x $1.1600 = $580,000, so the all-in cost is $580,000 - $30,000 + $10,000 = $560,000, which works out at $1.12 per euro, the strike of $1.10 plus the $0.02 premium.
Now suppose instead the spot rate had fallen to $1.0500. The importer would let the option lapse and buy euros in the market for 500,000 x $1.0500 = $525,000, plus the $10,000 premium already spent, for a total of $535,000, or $1.07 per euro. The option capped the worst case at $1.12 while still allowing the company to benefit from a favourable move.Case study
Seen in the real world.
Halberd Instruments is an illustrative and entirely invented maker of laboratory equipment in Boston that sells roughly 40% of its output into the eurozone. Its old approach was to sell forward every euro it expected to receive, which worked well until a major distributor cancelled a 3,000,000 euro order midway through the year and left Halberd contractually obliged to deliver euros it no longer had.
Closing out the surplus forwards cost the company just over $100,000 in a single quarter. The chief financial officer moved to a layered approach: forwards for the portion of the order book that was contracted and firm, and euro put options for the more speculative pipeline where cancellations were realistic.
Premiums added around $70,000 a year to costs, which the finance team framed to the board as an insurance line rather than a trading loss. Over the following three years two more large orders fell away, and in each case the options were simply abandoned with no closeout cost. The fictional company's own review concluded that the premium had paid for itself roughly twice over, mostly by removing the risk of being forced into unwanted currency trades.
Watch out
Common mistakes.
- Comparing an option to a forward on headline rate alone, forgetting that the premium buys the right to walk away, which a forward never offers.
- Buying an option far out of the money because it is cheap, then discovering the protection only kicks in after the exposure has already caused serious damage.
- Treating an expired, unused option as a wasted cost, when an unused insurance policy simply means the risk being insured against did not happen.
Questions
People also ask.
What is the most I can lose as an option buyer?
The premium paid, and nothing more, which is why buying options has a known and capped downside.
What is the difference between a European and an American style option?
A European option can only be exercised on the expiry date, while an American one can be exercised at any time up to expiry, and the extra flexibility usually carries a slightly higher premium.
Can I sell options instead of buying them?
You can, and you collect the premium, but selling exposes you to potentially large losses, so it is rarely appropriate for a company hedging an operating exposure.
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