The “Moneyness” Of Call And Put Options: Understanding Strike Prices

 | Oct 05, 2014 01:43AM ET

Strike price selection is such a key part of options trading basics and options calculations. There are 3 types of strike prices for both put and call options: in-the-money, at-the-money (and the closely related near-the-money) and out-of-the-moneyMoneyness tells option holders whether exercising will lead to a profit.  Moneyness looks at the value of an option if you were to exercise it right now. A loss would signify the option is out of the money, while a gain would mean it’s in the money. At the money means that you will break even upon exercise. In this article, I will show examples of the 3 types of strikes and the moneyness of each as they relate to put and call options.

Preview example

Let’s assume the price of a stock is $22.50. Here’s the easy part first: The $22.50 strike price would be at-the-money for both puts and calls. If the option holder (buyer) exercised the option and bought or sold the stock for $22.50, it would represent a breakeven situation compared to the current market value of $22.50.

Next, we will evaluate the $20 strike price. For call options this strike price is in-the-money because if the call was exercised, the call buyer would then buy the shares at $20 and can sell those shares at market for $22.50, generating a profit of $2.50 per share. The amount that the strike price is in-the-money is known as intrinsic value. For put options, however, the $20 strike is out-of-the-money because the holder has the right to sell the shares for $20, below market value.

Looking at the $25 strike price, the call holder has the right to buy the shares for $25, well above market value and therefore with no inherent value. For call options this strike is out-of-the-money. For put options, however, the $25 strike is in-the-money because the holder of the put has the right to sell his shares for $25, well above market value of $22.50.  This option then has $2.50 of intrinsic value. The moneyness of in-the-money and out-of-the-money strikes is inversely related for calls and puts. A reliable way to determine the moneyness of an option is to ask this question: If I am the holder of the option, am I better off exercising the option or buying or selling the stock at market. If you are better off exercising then the strike price is in-the-money and has intrinsic value.

Example of calculating moneyness for call options using the Ellman Calculator (get a free copy using the “free resources” link at the top of this page)