Selling covered calls is sometimes compared to taking out a limited insurance policy on your stocks, except that you get paid to take out this policy.

How? If you own a stock with options available, you can sell an option to call, (buy), your shares away from you at a given price, known as the strike price.

You’ll receive money, called a premium, for selling a call option. In fact, you’ll often receive a bigger $ amount per share by selling a call premium than you’re currently receiving as a dividend. This money reduces your net cost basis on the stock, hence the insurance analogy.

What’s the catch? By selling the call option, you’re obligating yourself to deliver x amount of shares of the underlying stock at a specific price – the strike price.

Each option contract corresponds to 100 shares of the underlying stock, so make sure that you own at least 100 shares of the stock BEFORE you try to sell calls against it.

Here are a few basic option terms that will help explain this option strategy:

Strike Price: The price attached to a given option contract, that a call seller is obligated to sell the underlying stock at to the buyer.

Call Bid Premium: The amount of $/share that call buyers are currently offering, (Bidding), for a given call option.

Expiration Date: The date that an option expires, which is normally on the 3rd Friday of the option’s contract month.

Option Chain: The listing of options available for a stock. These are arranged by calendar month. Normally, the months available revolve throughout the year: the front (current) month, the next month, one month per quarter, and the following January. Some more heavily traded stocks have more months available simultaneously.

What triggers the sale of your shares when you sell covered calls? If the price of the underlying stock rises to or past the combination of the strike price and the call premium you were paid, your shares will usually be “assigned”, (sold).

If you sold a $15 January call option and received $1.25, your shares would be assigned if the stock rose to or above $16.25.

Assignment normally happens at or near the expiration date.

Assigned Yield: The % yield a call seller receives when his shares assigned, calculated as follows: The difference between his basis cost on the underlying shares and the call’s strike price he sold at, dividend by his cost basis.

For example, if you sold that $15 call, and your cost basis on the stock was $14.00, you’d earn an additional $1.00/share, if your shares were assigned, which would equal an assigned yield of 7.14%. ($1.00 dividend by cost of $14.00).

Call Yield: The yield that the call seller receives for the call, calculated as follows: The call premium divided by the cost basis/share of the underlying shares.

In the above example, the call seller sold a call for $1.25, and the cost basis of the stock was $14.00. Therefore, his Static Yield equals 8.93%, ($1.25 divided by $14.00)

Most covered call sellers compare the amount of dividends they’d receive prior to the call’s expiration, to the amount of call premium they’d receive, to judge if it’s worth selling the call option or not.

Total Assigned Yield: The total of the dividends received, call premium received, and assigned yield received, all dividend by your cost basis of the stock.

In this example, if you’d received $.60/share in dividends during the investment term, plus $1.25 in call premium, plus $1.00 assigned yield differential, you’re total income on the trade would be $2.85, on a $14.00 stock. This equals a 20.36% Total Assigned Yield.

Total Static Yield: This is the combination of the dividends received or qualified for prior to expiration, plus the call premium received.

A Static Yield occurs when the stock DOESN’T rise to a price that is equal to or over the combination of the strike price and call premium, and the call seller’s shares are not sold.

To sum up, you can add up to 2 new income streams to your dividend income on any optionable stock, by selling covered calls against it.

We took a stock with a $.60 dividend, (a 4.3% dividend yield), and earned over twice as much $ in call premiums immediately, $1.25, (8.93% call yield), plus, we positioned ourselves for an additional $1.00/share if assigned, (7.14% assigned yield).

My pal was a normally a mild-mannered sort – very reflective, always weighing the consequences rationally before acting. In short, a logical thinker.

Imagine my dismay when that one phrase, “trading options”, triggered this unprecedented tirade. You’d think I’d insulted his family or something even worse.

After a few seconds had passed, I realized the reason for my friend’s outburst. He, like so many other investors, had only lost money trading options.

Why? Because he’d never discovered the number one option trading secret: 3 out of 4 options expire worthless. You read that correctly, when you trade options as a buyer, you have a 25% chance of making money, and a 75% chance of losing money.

This is why professional traders and investors favor the option strategy of selling options, rather than buying them, in hopes that the trade will go their way.

“Wait a minute. How can all of those options just expire worthless? I’ve seen ads for 100’s of option strategies and trading systems on the internet. They can’t all be losing money.”

I had to smirk. Now I really had him thinking. He knew that I hadn’t yet told him the big “secret behind the secret”, but he couldn’t quite put his finger on it.

“I have one word for you, my doubting friend”, I said,…”Time”. “When you become an option seller, you have time working FOR you, instead of against you. The reason is simple – as puts and calls get closer and closer to their expiration date, they lose their time value, due to “time decay”, or theta, the Greek letter that option traders use to denote the % of change in time value of an option.”

This is true of any option, no matter if you’re buying or selling call options or put options, or using a covered call strategy. It’s one of the big secrets of options investing that doesn’t get written about too often.

Because of the power of time decay, you can actually guess wrong about the direction of the market, or a stock, and you’ll still make money selling a call option or put option, as opposed to the buyers on the other side of the trade, who not only have to guess the stock’s future price movement correctly, but must do it BEFORE the option expiration date.

This helps to explain why even conservative investors use the covered call strategy, which is widely considered one of the most conservative option trading strategies around.

To sell covered calls, you must own at least 100 shares of the underlying equity, since each call contract corresponds to 100 shares of the underlying stock.

This is a tool you can use to hedge your portfolio, and lower your risk, by receiving “call premium” money, which lowers your break-even cost basis.

Selling covered calls is a short-to-mid-term option strategy you can use to double and triple your yields on new stock purchases, and/or to earn more income from your existing portfolio.