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How to calculate future value of stock options


Stock Option Valuation.


How to find the value of your employee stock options.


Knowing the value of your stock options can help you evaluate your compensation package and make decisions about how to handle your stock options.


Understanding Option Value.


As explained more fully in our book Consider Your Options, the value of a stock option has two components. One part, called intrinsic value , measures the paper profit (if any) that's built in at the time we determine the value. For example, if your option gives you the right to purchase stock at $10 per share and the stock is trading at $12, your option has an intrinsic value of $2 per share.


The option has additional value based on the potential for greater profit if you continue to hold the option. This part of the value varies depending on the amount of time until the option expires (among other factors), so it's called the time value of the option. The value of a stock option is the sum of its intrinsic value and its time value.


It's important to understand that option value is not a prediction, or even an estimate of the likely outcome from continuing to hold an option. Your option may have a value of $5 per share, but end up producing a profit of $25 per share — or no profit at all. Option value is useful information, but it doesn't foretell the future.


Objective and Subjective Value.


In theory, we can determine option value objectively using complicated formulas or procedures. In practice, the value that matters for people who hold employee stock options is the subjective value of the option: the value of the option to you . That's why I recommend a simplified approach when determining the value of an employee stock option. For one thing, if your option's expiration date is more than five years away, I would determine the value as if it expires in five years. The chances are pretty good that you won't get the full benefit of a longer period of time. Also, I ignore any added value produced by high volatility . That's a way of measuring how much the stock zigzags up and down. In theory, higher volatility means higher option value, but in practice it exposes you to a lot of risk, and that's a negative factor that cancels out the higher value, in my opinion. For planning purposes, I nearly always determine the value of employee stock options as if the stock has moderate volatility, even if the actual volatility produces a higher theoretical value.


Valuation Shortcuts.


These observations about subjective value allow us to use some shortcuts. The easiest one is for brand new options that have a life of five or more years. The option doesn't have any intrinsic value yet because the exercise price is the same as the market value of the stock. If we ignore additional time beyond five years, and also ignore the value of high volatility, a newly issued option usually has a value close to 30% of the value of the stock.


Example: You receive an option to buy $800 shares of stock at $25 per share. The total value of the shares is $20,000, so the option value is around $6,000.


Remember, the theoretical value of the option may be quite a bit higher, but $6,000 is a reasonable figure for the value of the option to you .


If you've held your option for a while and the stock price has gone up, you need a slightly more complicated method to determine the option's value. The "official" formula is truly mind-boggling, but the following procedure gives you a reasonable estimate:


Subtract the exercise price of the stock option from the current value of the stock to determine the intrinsic value of the option. Multiply the exercise price of the stock option by 25%, to get an estimate of the five-year time value. Reduce that number proportionately if the option will expire in less than five years. Add the intrinsic value and the time value to get the total value of the stock option.


Example: Your option lets you buy stock at $10 per share. The stock is currently trading at $16, and the option will expire in four years.


The intrinsic value is $6 per share. The five-year time value would be $2.50 (25% of the $10.00 exercise price), but we reduce that number by one-fifth because the option will expire in four years. For this option, the intrinsic value is $6.00 per share and the time value is about $2.00 per share. The total value of the option at this point in time is about $8.00 per share.


Check your work: The time value of a stock option is always somewhere between zero and the exercise price of the option. A number outside that range indicates a mistake.


You probably won't be able to do this calculation in your head, but it's pretty easy with a calculator, and that's more than we can say for the Black-Scholes formula. Bear in mind that here again we're ignoring the added value of high volatility, so the theoretical value of a stock option may be higher than the number calculated using this simplified procedure.


Dividends reduce the value of stock options, because option holders don't receive dividends until after the exercise the option and hold the shares. If your company pays dividends, it makes sense to reduce the values calculated by the shortcut methods described above.


Need an Online Calculator?


There are a number of stock option value calculators on the Internet. Some are no good at all, but some are excellent — and free. My favorite is offered by IVolatility. Read our explanation first, then go to this page and look for a link to their Basic Calculator.


Start out by entering the symbol for your company's stock in the box for "symbol." For example, if you work for Intel, enter INTC. Ignore the box for "style" because that doesn't matter for this type of option. The next box is for "price," and it should already have a recent price for your company's stock. You can leave it alone, or change it if you want to see the option value when the stock price is higher or lower.


The next box is for "strike," which means the exercise price of your stock option. Enter that number and skip over "expiration date," because you're going to enter the number of days to expiration instead. Don't worry about calculating the exact number of days; just figure the years or months and multiply by 365 or 30.


The next box is for volatility, and if you entered a good stock symbol, the number is already there. How cool is that? If the number is 30 or less, just accept it and move on. If it's higher than 30, I'd be inclined to discount it to 30 in most cases because your options expose you to a lot of risk.


You can accept or change the values the calculator offers for interest rate and dividends. Normally there is no reason to change these items. Press "calculate" and after a moment you'll see the value of the option (and lots of other stuff that will literally be Greek to you).


Note that this calculator gives the total value of your stock option. If your option is "in the money" (meaning the stock is trading at a price higher than the exercise price of the option), part of the value is intrinsic value and part is time value. Subtract the exercise price of the option from the trading price of the stock to get the intrinsic value. Then you can subtract the intrinsic value from the overall value to learn the time value of your stock option.


A publication of Fairmark Press Inc.


© Copyright 1997-2008, Kaye A. Thomas All rights reserved.


Future Value.


Calculate Future Value.


The value of an asset or cash at a specified date in the future that is equivalent in value to a specified sum today.


Please fix these errors:


Interpretation:


Your future value is too small for our calculators to figure out. This means that you either need to increase your present value, increase your interest rate, or increase your time frame.


Your future value is too large for our calculators to figure out. This means that you either need to decrease your present value, decrease your interest rate, or shorten your time frame.


How to Calculate Option Value.


Options are contracts that give the owner of a stock the right to buy (call options) or sell (put options) another security at a predetermined price, called the strike price. Stock options are the most common, but option contracts are also traded on futures, foreign currency, and other securities. Employee stock options are not traded, but instead function as a special form of call option. Options don't automatically have value, so it's important for an investor to know when an option does have value and how it is calculated. All options have an expiration date after which an option that has not been exercised loses any value it had.


Understand how option prices are determined. The simplest situation is a call option issued with the strike price set at the current market price. When the seller of an option (called a writer) issues the contract, she charges a premium to cover expenses. For stock options this is usually less than $1/share. As long as the market price remains at or below the strike price, the option has zero value, because you can buy the shares on the market for the same or less than you can using the option. However, if the market price goes up at least enough to cover the premium you are "in the money." You can then buy the shares at the strike price and resell them for more than the strike price plus premium.


Know how put options work. Essentially it's just the reverse of a call option. A put option guarantees you can sell the underlying security for a specific price. If the market price falls enough to cover the premium you can buy the security on the market and sell it at a profit to the option writer (who must complete the transaction if you choose to exercise the option).


Calculate call option value and profit by subtracting the strike price plus premium from the market price. For example, say a call stock option has a strike price of $30/share with a $1 premium and you buy the option when the market price is also $30. You invest $1/share to pay the premium. If the stock then goes up to $35/share and you exercise the option, you pay the strike price of $30/share then sell the shares for $35/share. The value of the option is $5/share and your profit is this amount minus the premium of $1/share, or $4/share. Again, a put option works the same way as a call option, in reverse.


Determine net gain in the value of an option when the contract has a net value when you purchase it. Options may be issued or traded on an options exchange when the strike price and market price are different. In this case you must pay the premium plus any value the option already has. The price must go up enough (or down for put options) to put you in the money before you can make a profit. For example, if you bought a stock call option with a strike price of $30/share and a market price of $35/share, it already has a value of $5/share and you must pay this amount plus the premium (a total of $6/share). If the stock goes up to $40 share, the value of the option increases from $5/share to $10/share. Your profit, if you then exercise the option, is $10/share minus the $6 you paid, or $4/share.


How to Calculate Future Value of Stock.


Mutual fund results come from more than just the dividend yield.


Related Articles.


1 [Stock Price] | How to Calculate a Company's Stock Price 2 [Value vs] | Future Value vs. Present Value 3 [Current Yield] | How to Calculate a Bond's Current Yield 4 [Daily Stock Market Activity] | How to Predict Daily Stock Market Activity.


Stocks go up and down with no guarantees. This means that calculating the future value of a stock is an anticipated or desired return and not something you can count on explicitly. With stock history and current dividend data, an investor can make an estimation of the expected return from a stock. With the expected return, investor gets an idea of whether the stock's return will be worth the inherent risk of owning it.


1. Go online to stock research sites. Examine a five-year history of the stock in question. Subtract the year-end price per share from the year-starting price per share for each of the years. Average these values by adding them together and dividing by five.


2. Assume your average capital gain for the stock is $4 for a stock currently selling at $30 per share. Create a longer average history if you can, but don't use less than five years.


3. Obtain the dividend data for the stock. Average the annual dividend payments for the same five-year period. Assume the dividends average $2 per year.


4. Write down the formula for expected return: R = (Dividends paid + Capital gains)/price of stock, which will give you an average annual expected return based on historic data.


5. Calculate: R = (Dividends paid + Capital gains)/price of stock R = (2+4)/30 R = 6/30 R = 20 percent.


6. Calculate future stock value with dividends factored for a two-year period with an average 20 percent return: $30 + ($30*20%) + ($36*20%) = $43.20.


Things Needed.


Calculator Pencil Paper Internet access.


Future value is for informational purposes and provides no guarantee. Company earnings, economic trends and industry data all affect stock prices.


References (1)


About the Author.


With more than 15 years of professional writing experience, Kimberlee finds it fun to take technical mumbo-jumbo and make it fun! Her first career was in financial services and insurance.


Photo Credits.


Thinkstock/Comstock/Getty Images.


More Articles.


[Market Price Per Share] | How to Calculate Market Price Per Share of Common Stock.


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