What it means
An option gives its holder the right, but not the obligation, to buy or sell an asset at a fixed price called the strike. Comparing that strike with the current market price gives the option's moneyness, and at the money is the exact midpoint of that scale.
If a share trades at $50 and you hold a call option with a $50 strike, exercising it would let you buy at $50 something worth $50, which is worth nothing. That zero is called the intrinsic value, so an at the money option has intrinsic value of zero and its entire premium is time value.
This position matters because at the money options carry the most time value of any strike, and they lose it fastest as expiry approaches. Traders describe this decay as theta, and it is the reason buyers of at the money options need the market to move fairly promptly rather than eventually.
The phrase turns up well beyond trading desks. Employee share options are usually granted at the money, meaning the strike is set at the share price on the grant date, so the holder profits only from growth achieved after they received them.
In practice nothing sits perfectly at the strike, so people use the term loosely for the nearest available strike to the current price. Some desks distinguish at the money forward, which uses the forward price rather than the spot price, and the difference can matter when interest rates or dividends are significant.
In practice
Real-world examples.
Example
A technology firm grants 100,000 share options to its incoming operations director with a strike of $12.00, the closing share price on the grant date. The options are at the money on day one, so the director earns nothing unless the share price rises above $12.00 during the vesting period.
Example
A fund manager expecting a volatile earnings announcement buys at the money call options rather than the shares themselves. The maximum loss is the premium paid, which is far less than the fall she would suffer holding the stock outright if the announcement disappoints.
Example
An airline hedging fuel buys at the money call options on jet fuel at the current forward price. The options cost more in premium than out of the money ones would, but they start protecting the airline immediately rather than only after prices have already risen sharply.
Think of it
“At the money means strike equals current price-the option is right at the boundary.
Formula
Calculation
For a call option: Intrinsic Value = Market Price - Strike Price, floored at zero. The option is at the money when Market Price = Strike Price, so Intrinsic Value = 0.
Suppose a share trades at exactly $50.00 and you buy a three-month call option with a $50.00 strike for a premium of $3.20 per share. One contract covers 100 shares, so the cost is $3.20 x 100 = $320.
Intrinsic Value = $50.00 - $50.00 = $0.00
Time Value = Premium - Intrinsic Value = $3.20 - $0.00 = $3.20
Break-even at expiry = Strike + Premium = $50.00 + $3.20 = $53.20
If the share finishes at $56.00, the intrinsic value becomes $56.00 - $50.00 = $6.00 per share, or $600 per contract. The profit is $600 - $320 = $280. If instead the share finishes at exactly $50.00, the option expires worthless and the full $320 is lost.Case study
Seen in the real world.
This is a fictional, illustrative scenario. Brightmoor Retail Group granted its senior team options over 400,000 shares at a $9.00 strike, exactly at the money on the grant date, with three-year vesting. The remuneration committee chose that structure deliberately so that no value would transfer to management unless shareholders gained first.
Two years in, the share price sat at $8.60 and the options were slightly out of the money, prompting a request from management to reprice them. The committee refused, on the grounds that repricing would convert a performance incentive into a payment for turning up, and instead granted a modest new tranche at the current price.
By the end of year four in this illustrative story the share price reached $13.00. The original options were worth $13.00 - $9.00 = $4.00 per share, or $1,600,000 across the 400,000 shares, and shareholders had seen a rise of roughly 44% on the $9.00 grant price, which was exactly the alignment the committee had intended.
Watch out
Common mistakes.
- Assuming an at the money option is worthless because its intrinsic value is zero, when its entire premium reflects the chance of moving into profit before expiry.
- Treating at the money as a fixed label, when it is a moving description that changes every time the underlying price moves.
- Forgetting that an at the money option must beat the premium paid, not merely the strike, before the buyer actually makes money.
Questions
People also ask.
Why do at the money options cost more than out of the money ones?
Because they are closer to becoming profitable, so the market assigns a higher probability to them finishing with real value.
What happens to an at the money option at expiry?
It expires worthless in practical terms, since there is no benefit in exercising a right to buy at the same price the market already offers.
Are employee share options always granted at the money?
Usually yes, partly for tax and accounting reasons and partly because a discounted strike would reward holders for share price levels achieved before they arrived.
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