An option is out of the money when exercising it right now would produce a loss rather than a gain. For a call option, that means the strike price is above the current market price of the underlying security. For a put option, it means the strike price is below the current market price. An out-of-the-money option has no intrinsic value. Its entire price is made up of time value and implied volatility, the market's expectation of how much the underlying might move before expiration.
Think of an out-of-the-money call like a ticket that lets you buy a stock at $110 when the stock currently trades at $100. You would not use it today, but it has value because the stock might reach $110 before the ticket expires.
The relationship between an option's strike price and the current price of the underlying determines which category it falls into.
| Status | Call Option (right to buy) | Put Option (right to sell) |
|---|---|---|
| In the money | Strike below current price | Strike above current price |
| At the money | Strike equals current price | Strike equals current price |
| Out of the money | Strike above current price | Strike below current price |
Out-of-the-money options cost less than in-the-money or at-the-money options because they are less likely to expire with any value. The deeper out of the money an option is, the larger the move required in the underlying before the option becomes profitable. Less probability of profit means less price.
A call option with a strike price 20% above the current stock price is deeply out of the money. You are paying for the possibility of a 20% or greater move before expiration. That is unlikely enough that the option trades for a small fraction of the stock's price, which is exactly why some traders favor deep out-of-the-money options: the initial cost is low, and the leverage if the move occurs is large.
Delta is the sensitivity measure that tells you how fast an out-of-the-money option's price moves relative to the underlying. Out-of-the-money options have low delta. A far out-of-the-money call might have a delta of 0.10, meaning it gains only $0.10 in price for each $1 the underlying rises. If the stock never reaches the strike price, the option expires worthless and you lose the entire premium paid.
This is the central risk of buying out-of-the-money options. Time works against you. Every day closer to expiration, time value erodes. This decay accelerates in the final weeks before expiration, a dynamic called theta decay. Buyers of out-of-the-money options need the move they are anticipating to happen quickly and with enough magnitude to overcome both the distance to the strike and the ongoing erosion of time value.
Selling out-of-the-money options generates income in the form of premium. You collect the price the buyer pays, and if the underlying never reaches your strike price by expiration, you keep the full premium. This is the mechanic behind covered calls, cash-secured puts, and credit spreads. The seller earns the time value as it decays, which is why option sellers often say they are "selling volatility" or "harvesting theta."
The risk for sellers is the unlimited or large loss if the underlying makes a dramatic move through the strike price. Out-of-the-money options provide a buffer in the form of the distance to the strike. A seller of an out-of-the-money call on a stock at $100 with a $120 strike only starts losing money if the stock rises above $120 plus the premium received. The out-of-the-money position creates a cushion.
An option's moneyness changes every time the underlying price moves. A call option that is out of the money when you buy it can move into the money if the stock rises sufficiently, and can move back out of the money if the stock falls. The strike price is fixed. The stock price is not. This constant shifting is what makes option trading a dynamic activity rather than a one-time decision.