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Options Pricing: Factors That Influence Option Price

Six make factors influence options pricing: the underlying price, strike outlay, time until expiration, volatility, interest rates and dividends. 

Reckon 2: Six factors that influence option pricing are shown on the top row of the chart. As required, the underlying price and strike price determine the intrinsic value; the delay until expiration and volatility determine the probability of a profitable move; the pursuit rates determine the cost of money; and dividends can cause an adjustment to part price.

Underlying Price

The most influential factor on an option stock is the current market price of the underlying asset. In general, as the price of the underlying betters, call prices increase and put prices decrease. Conversely, as the price of the underlying curtails, call prices decrease and put prices increase.

If underlying prices … Ask for prices will … Put prices will …
Increase Increase Decrease
Abatement Decrease Increase


Strike Price

The strike price determines if the alternative has any intrinsic value. Remember, intrinsic value is the difference between the find price of the option and the current price of the underlying asset. The premium typically escalations as the option becomes further in-the-money (where the strike price turns more favorable in relation to the current underlying price). The premium broadly decreases as the option becomes more out-of-the-money (when the strike evaluation is less favorable in relation to the underlying security).

Premiums increase as opportunities become further in-the-money.


Time Until Expiration

The longer an election has until expiration, the greater the chance it will end up in-the-money (profitable). As expiry approaches, the option’s time value decreases. As a general rule, an election loses one-third of its time value during the first half of its existence, and two-thirds of its value during the second half. The underlying asset’s volatility is a go-between in time value: If the underlying is highly volatile, you can reasonably expect a arrant degree of price movement before expiration. The opposite holds genuine where the underlying exhibits low volatility: The time value will be diminish if the underlying price is not expected to move much.

The longer the time until discontinuance, the higher the option price.
The shorter the time until expiration, the lessen the option price.


Expected Volatility

Volatility is the degree to which expense moves, whether it goes up or down. It is a measure of the speed and magnitude of the underlying’s amount changes. Historical volatility refers to the actual price changes that pull someones leg been observed over a specified time period. Options buyers can evaluate historical volatility to determine possible volatility in the future. Implied volatility, on the other care nearby, is a forecast of future volatility and acts as an indicator of the current market position. While implied volatility can be difficult to quantify, option premiums are large higher if the underlying exhibits higher volatility because it will compel ought to higher expected price fluctuations.

The greater the expected volatility, the higher the election value.

Interest Rates  

Interest rates and dividends have stinting, but measurable, effects on option prices. In general, as interest rates climb, call premiums increase and put premiums decrease. This is because of the costs associated with owning the underlying: The purchase incurs either rate expense (if the money is borrowed) or lost interest income (if existing endows are used to purchase the shares). In either case, the buyer will be enduring interest costs.

If interest rates … Call prices will … Put sacrifices will …
Rise Increase Decrease
Fall Decrease Increase


Dividends can touch option prices because the underlying stock’s price typically relinquishes by the amount of any cash dividend on the ex-dividend date. As a result, if the underlying’s dividend prolongs, call prices will decrease and put prices will increase. Conversely, if the underlying’s dividend curtails, call prices will increase and put prices will decrease.

If dividends … Knock up a appeal to prices will … Put prices will …
Rise Decrease Increase
Nosedive Increase Decrease

Options Pricing: Distinguishing Between Option Goads and Theoretical Value

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