What it means
Options come in two forms. A call gives the right to buy at the strike price and a put gives the right to sell at the strike price, and in both cases the holder simply walks away if exercising would lose money.
The most a buyer can lose is the premium paid, while the seller's exposure can be far larger. The European style locks exercise to the expiry date itself, which makes these contracts simpler to value and cheaper to administer.
Most index options, most currency options and almost all over-the-counter contracts arranged by corporate treasurers are European style. Exchange-traded options on individual shares are more often American style.
Companies meet European options mainly in hedging rather than speculation. A manufacturer expecting a large receipt in a foreign currency can buy a put option on that currency to set a floor on what the receipt will be worth, while still benefiting if the exchange rate moves in its favour.
The premium is simply the cost of that insurance. Valuation normally relies on the Black-Scholes model, which prices a European option from the current asset price, the strike, the time remaining, interest rates and the expected volatility of the asset.
Volatility is the only input that cannot be observed directly, which is why it is where most of the disagreement between traders sits. One feature regularly catches people out.
Because exercise is tied to a single day, a European option can be deeply profitable for months and still expire worthless if the price falls back before that day arrives, whereas an American option could have been exercised at the favourable moment.
In practice
Real-world examples.
Example
A German machinery exporter expects $12,000,000 from a US customer in six months. It buys a European put option on the dollar so that if the dollar weakens it can still sell at an agreed rate, and if the dollar strengthens it lets the option lapse and takes the better market rate.
Example
A pension fund holds a large index position and buys European put options expiring in twelve months as portfolio insurance. The trustees accept the annual premium as a known cost in exchange for capping how much the fund can fall in a severe market decline.
Example
An airline buys European call options on jet fuel to protect the coming winter schedule. Fuel prices fall, the options expire worthless, and the airline treats the lost premium as the price of certainty when it briefs the board.
Think of it
“European option can only be exercised at the end-no early exercise allowed.
Formula
Calculation
Call payoff at expiry = the greater of (spot price - strike price) or zero
Net profit = payoff - premium paid
A treasurer buys one European call option contract on a listed share, covering 100 shares, with a strike price of $50.00 and three months to expiry. The premium is $3.20 per share, so the total cost is 100 x $3.20 = $320.
On the expiry date the share trades at $58.00. The payoff is $58.00 - $50.00 = $8.00 per share, or 100 x $8.00 = $800 in total. Net profit is $800 - $320 = $480, a return of $480 / $320 = 150% on the premium.
Had the share finished at $47.00 instead, the option would expire worthless because the holder would not choose to buy at $50.00 something worth $47.00. The loss would be the full $320 premium and no more, which is the defining attraction of buying options rather than trading the share directly.Case study
Seen in the real world.
Calder Instruments is a fictional, illustrative scientific equipment maker used to show how a European option behaves in practice. Calder had signed a $9,000,000 contract payable in a foreign currency nine months out, and a 10% adverse move would have wiped out the whole margin on the job.
The treasurer compared two routes. A forward contract would fix the rate at no upfront cost but remove any upside, while a European put option would cost roughly 2% of the notional amount and preserve the gain if the currency moved the right way. The board chose the option, accepting a known premium in exchange for keeping the upside.
At expiry the currency had moved in Calder's favour, so the option lapsed unexercised and the premium was written off. The illustrative point is that a lapsed hedge is not a failed hedge: the company paid a defined amount to remove a risk that could have cost several times more, and the accounting treatment recorded exactly that.
Watch out
Common mistakes.
- Believing a European option is one traded in Europe. The name describes the exercise rule only, and European-style contracts trade on exchanges all over the world.
- Assuming an option that is profitable today will be profitable at expiry. Value can evaporate entirely in the final weeks, and only the price on the expiry date decides the payoff.
- Ignoring time decay when holding a purchased option. Every day that passes removes some of the option's value even if the underlying price does not move at all.
Questions
People also ask.
Why are European options usually cheaper than American ones?
Because early exercise is a genuine right with value, so an American option costs at least as much as an otherwise identical European contract.
Can a European option be sold before expiry?
Yes, the contract itself can be traded at any time even though the right to exercise it only arrives on the expiry date.
What decides the premium?
The gap between the strike and the current price, the time to expiry, interest rates and above all the expected volatility of the underlying asset, since more movement means more chance of a large payoff.
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