Options profit calculation and cash settlement
"The other two answers seem basically correct, but I wanted to add on thing:  While you can exercise an ""American style"" option at any time, it's almost never smart to do so before expiration.  In your example, when the underlying stock reaches $110, you can theoretically make $2/share by exercising your option (buying 100 shares @ $108/share) and immediately selling those 100 shares back to the market at $110/share.  This is all before commission. In more detail, you'll have these practical issues: You are going to have to pay commissions, which means you'll need a bigger spread to make this worthwhile.  You and those who have already answered have you finger on this part, but I include it for completeness. (Even at expiration, if the difference between the last close price and the strike price is pretty close, some ""in-the-money"" options will be allowed to expire unexercised when the holders can't cover the closing commission costs.) The market value of the option contract itself should also go up as the price of the underlying stock goes up.  Unless it's very close to expiration, the option contract should have some ""time value"" in its market price, so, if you want to close your position at this point, earlier then expiration, it will probably be better for you to sell the contract back to the market (for more money and only one commission) than to exercise and then close the stock position (for less money and two commissions). If you want to exercise and then flip the stock back as your exit strategy, you need to be aware of the settlement times.  You probably are not going to instantly have those 100 shares of stock credited to your account, so you may not be able to sell them right away, which could leave you subject to some risk of the price changing.  Alternatively, you could sell the stock short to lock in the price, but you'll have to be sure that your brokerage account is set up to allow that and understand how to do this." Depending on the day and even time, you'd get your $2 profit less the $5 commission. Jack's warning is correct, but more so for thinly traded options, either due to the options having little open interest or the stock not quite so popular. In your case you have a just-in-the-money strike for a highly traded stock near expiration. That makes for about the best liquidity one can ask for.  One warning is in order - Sometime friday afternoon, there will be a negative time premium. i.e. the bid might seem lower than in the money value. At exactly $110, why would I buy the option? Only if I can buy it, exercise, and sell the stock, all for a profit, even if just pennies. Marketwatch reports that the 108 strike call option sells for 1.45,  down 1.53 from yesterday. If we split the bid and ask you get 1.415. That is what that contract will, likely, trade at.  The biggest problems with options are commissions and liquidity. I have seen a commission as high as $45 per trade. I have also seen open interest disappear overnight. Even if you obtain contracts that become worth more than you paid for them you may find that no one wants to pay you what they are worth.  Track your trade over a few weeks to see how you would have done. It is my experience that the only people who make money on options are the brokers.
"There are a few different ""kinds"" of implied volatility. They are all based on the IVs obtained from the option pricing model you use. (1) Basically, given a few different values (current stock price, time until expiration, right of option, exercise style, strike of the option, interest rates, dividends, etc), you can obtain the IV for a given option price. If you look at the bid of an option, you can calculate the IV for that bid. If you look at the ask, there's a different IV for the ask. You can then look at the mid price, then you have a different IV, and so on and so on. And that's for each strike, in each expiration cycle! So you have a ton of different IVs. (2) In many option trading platforms, you'll see another kind of IV: the IV for each specific expiration cycle. That's calculated based on some of the IVs I mentioned on topic (1). Some kind of aggregation (more on this later). (3) Finally, people often talk about ""the IV of stock XYZ"". That's, again, an aggregation calculated from many of the IVs mentioned on topic (1). Now, your question seems to be: which IVs, from which options, from which months, with which weight, are part of the expiration cycle IV or for the IV of the stock itself? It really depends on the trading platform you are talking about. But very frequently, people will use a calculation similar to how the CBOE calculates the VIX. Basically, the VIX is just like the IV described on topic (3) above, but specifically for SPX, the S&P 500 index. The very detailed procedure and formulas to calculate the VIX (ie, IV of SPX) is described here: http://cfe.cboe.com/education/vixprimer/about.aspx If you apply the same (or a similar) methodology to other stocks, you'll get what you could call ""the IV of stock XYZ""." "RoR for options you bought is fairly easy: (Current Value-Initial Cost)/Initial Cost gives you the actual return. If you want the rate of return, you need to annualize that number: You divide the return you got above by the number of days the investment was in place, and then multiply that number by the number of days in a year. (365 if you're using calendar days, about 255 if you're using trading days.) RoR for options you sold is much more complex: The problem is that RoR is basically calculating the size of your return relative to the capital it tied up to earn it.   That's simple when you bought something; the capital tied up is the money you put up.   It's more complex on a position like a short option, where the specific transaction in question generates cash when it's put on.    The correct way to deal with this is to A) Bundle your strategy (options, stock and collateral) into one RoR where appropriate, and B) include any needed collateral to support the short option in the calculation. So, if you sell a ""cash-secured"" put, where you have to post the money that you'd need to take delivery of the shares if they were put to you, the initial cost is the total amount you'd need to put the trade on:   in this case, it's the cash amount, less the premium you collected for selling the put.  That's just one example.    But the approach holds more broadly:  if you're using covered calls, your original cost is the cost of the stock less the premium generated by the sale of the call." "I would think that a lot of brokers would put the restriction suggested in @homer150mw in place or something more restrictive, so that's the first line of answer. If you did get assigned on your short option, then (I think) the T+3 settlement rules would matter for you.  Basically you have 3 days to deliver.  You'll get a note from your broker demanding that you provide the stock and probably threatening to liquidate assets in your account to cover their costs if you don't comply.  If you still have the long-leg of the calendar spread then you can obtain the stock by exercising your long call, or, if you have sufficient funds available, you can just buy the stock and keep your long call.  (If you're planning to exercise the long call to cover the position, then you need to check with your broker to see how quickly the stock so-obtained will get credited to your account since it also has some settlement timeline.  It's possible that you may not be able to get the stock quickly enough, especially if you act on day 3.) Note that this is why you must buy the call with the far date.  It is your ""insurance"" against a big move against you and getting assigned on your short call at a price that you cannot cover. With the IRA, you have some additional concerns over regular cash account - Namely you cannot freely contribute new cash any time that you want.  That means that you have to have some coherent strategy in place here that ensures you can cover your obligations no matter what scenario unfolds.  Usually brokers put additional restrictions on trades within IRAs just for this reason. Finally, in the cash account and assuming that you are assigned on your short call, you could potentially could get hit with a good faith, cash liquidation, or free riding violation when your short call is assigned, depending on how you deliver the stock and other things that you're doing in the same account.  There are other questions on that on this site and lots of information online.  The rules aren't super-simple, so I won't try to reproduce them here.  Some related questions to those rules: An external reference also on potential violations in a cash account: https://www.fidelity.com/learning-center/trading-investing/trading/avoiding-cash-trading-violations" Short answer: the CD can be considered as part of the down payment calculations. they will want a plan to cash them in the last days or weeks before settlement. When approving you for a mortgage they will be looking at: They now know what you can afford to dedicate to this new property every month. They take into account principal, interest, taxes, insurance and the HOA fee. They will then look at how much money you will use as a down payment. They want this money to exist before applying, and they will check on its existence in the last days before settlement.  The best is cash sitting in a bank. But it can also be money in savings bonds, or a CD, but they will want a plan for cashing that in just before settlement.  They won't be comfortable with it being in a volatile account such as stocks especially if the current balance is exactly what you need for a mortgage that won't be closed for 3 more months. Because people use money they borrow from their 401K for a home purchase, it is possible to use money from volatile account. They will want to see a plan for getting money from these accounts just before settlement. "This formula is not calculating ""Earnings"".  Instead, it is calculating ""Free Cash Flow from Operations"". As the original poster notes, the ""Earnings"" calculation subtracted out depreciation and amortization.  The ""Free Cash Flow from Operations"" adds these values back, but for two different reasons:" What you're looking for is expected value. Let's say you invest $1000 in option A, and later discover that you are going to lose 20%.  So the expected value of option A is $800. If option B has a 50% chance of losing 50%, and a 50% of gaining 20%, then your expected value is $650 ($650 = $1000 * (50% * 50% + 50% * 20%)). $800 > $650, so you should stay with option A. In the real world, you usually don't know the exact odds and percentages, so substitute in your best guesses.  This may lead to suboptimal results, but only if your estimations are wrong; the formula itself is ideal. If you were a business, all your assets would have a dollar value, so when you sold them you'd decrease the amount of assets by that amount and increase in cash, and if there was a profit on the sale it would go in as income, if there was loss it would count as a cost (or a loss)... so if there was a profit it would increase Equity, a loss then it would decrease Equity.  Since it's not really worthwhile doing a estimated cost for everything that you have, I'd just report it as income like you are doing and let the amount of equity increase proportionately. So, implicitly you always had roughly that amount of equity, but some of it was in the form of assets, and now you're liquidating those assets so the amount shows up in GnuCash. When you buy new things you might sell later, you could consider adding them as assets to keep track of this explicitly (but even then you have problems-- the price of things changes with time and you might not want to keep up with those price changes, it's a lot of extra work for a family budget) -- for stuff you already have it's better to treat things as you are doing and just treat the money as income-- it's easier and doesn't really change anything-- you always had that in equity, some of it was just off the books and now you are bringing it into the books. This is in the balance sheet, but the info is not usually that detailed. It is safe to assume that at least some portion of the cash/cash equivalents will be in liquid bonds. You may find more specific details in the company SEC filings (annual reports etc).