# Theoretical price in options. Option Price Calculator

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Introduction to Options Theoretical Pricing Option pricing is based on the unknown future outcome for the underlying asset.

If we knew where the market would be at expiration, we could perfectly price every option today. No one knows where the price will be, but we can draw some conclusions using pricing models. When looking at call options, a higher strike will cost less than a lower strike.

If the underlying asset price has risen dramatically and you chose a higher strike price rather than a lower strike, your payoff will be less because you have foregone the first part of the upward binex demo account movement.

For Example To get an idea of how much the premium should be at each strike, we are going to use a simple model.

Sometimes options premiums move incrementally, or bit by bit, while other times they take off exponentially. And options premiums tend to decay, all being else equal, as the clock ticks toward expiration. So how might you go about setting your targets and expectations?

In this model, we will assume the price movement repeats every month over the life of the option and the option expiration will occur in four months. What is the probability for each of the possible price outcomes after four months?

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- Member Sign-In Theoretical Price The theoretical price of an option is the fair value of the option as determined by an option pricing model.

In this model there are 16 possible paths that lead to each of the five price outcomes. The probability of each outcome can be theoretical price in options by aggregating the paths for each price.

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The probability of reaching any one price point in this model is the number of paths in that price point divided by the total number of paths. Now that we have the probability for each price point, we can start pricing options with different strike prices. First, you need to know the payoff for each strike price at the defined price level.

For example, the 97 call with an underlying price level of 96, would be an out of the money option. The payoff is zero. To find the probability weighted payoff, we multiply the probability for each price point by the payoff amount.

The theoretical price for a 97 call would be the sum of the probability weighted payoffs. In this case the sum would be 3.

Continuing the mathematics for each strike price we see the strike has a theoretical price of. It should be no surprise the strike has theoretical price in options value than the strike as the probability of it being in the money is much less.

Summary Traders use proprietary models to determine if the prices in the marketplace are in line with their views. We have shown you a very simple binomial model.

### Theoretical Option Pricing

Which assumes that the market will move a set amount, either up or down, over each period. Even the more advanced models still provide only estimates for the option price and are still based on assumptions about the future.

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- Theoretical Value Fair Value of an Option Read About it or go directly to the Calculator This information is provided for those who already have some understanding of options, but if you are a rookie, you would be better served to study this page after you understand the basic concepts of options.

These theoretical pricing models provide options traders the ability to track and measure option prices.