Over the years, perhaps the question I’ve been asked most frequently is how I select which options to trade on a particular stock.
There are a lot of factors that options traders have to consider when making a trade – which underlying stock, which direction, which strike, and which expiration date are the big ones. But students of the markets understand that there are so many considerations that can affect the price of options, from tumult in the Shanghai markets to debt pressures in the Eurozone.
Markets are global, and so are your options. Everything – including the price of tea in China – that impacts the markets has the chance to affect your trades.
So how do I choose my options? Believe it or not, the answer is pretty simple.
Today, we’re going to take a closer look at one of my favorite options strategies, and how it helps me determine whether or not I’m going to take a particular trade.
I’ll show you how to use it to target only those options that have the chance to double your money before you even risk your first dime…
The Easiest Way to Double Your Money
When someone asks me how I choose my options, the easy answer is always: the one that has the lowest percent to double.
There are other strategies you can use to pinpoint which options you want to trade. But remember – we want to make the most amount of money from the smallest move in the underlying stock.
Two weeks ago, I showed you how I narrow down the list of 250 toprated stocks and ETFs to get to my 10 “Top Movers.”
From there, the two major things to assess before I take an option trade are how far I anticipate the stock moving and by what timeframe I expect it to get there.
The very next thing I do is look at the “percent to double.” That’s the percentage the underlying stock needs to move in order for my long options to return 100%.
If you’re feeling brave and want to make the calculations yourself, you can use the following formula:
(Option Premium)/Option Delta) x 100 Stock Price 
= Percent to Double 
This is a handy tool, but it’s limited. Recall that an option’s delta measures the change in the price of an option relative to the change in price of the underlying stock. But the delta is dependent on the time left until expiration. So if you’re looking for a stock to make a move within a few days and you choose options that expire in a week, any move the stock makes in your direction could be negated by the loss of value in your options as they approach expiration.
The great news is, you don’t even have to figure out the math on your own. You can easily obtain the “percent to double” calculation from your broker or trading platform, or from any options analysis tool.
The options analysis tool I use calculates this for me. See the image below:
Trade Like a Pro in 3 Easy Steps
So let’s take a moment to run through my process when I sit down to make a trade.
I start with my “Top Movers” list – those are the week’s bestmoving stocks culled from the CBOE’s Penny Pilot list. That way, I know
I then use my Money Calendar and Darknet tools to find stocks that have a projected move higher or lower.
Once I have that information, I run a check on the lowest percent to double for a call or put, depending on which direction my tools tell me the stock is anticipated to go.
Here is a look at the top five results generated by a recent search:
See how all this is coming together? This is exactly how I determine what trades are worth my time and my money:
 Create a list of stocks, ETFs, or indices to research anticipated moves higher or lower.
 Run a search on which option will double with the least amount of movement from the underlying stock. This will determine the strike price and expiration of your options.
 Assess how far the move will be and by what time frame to confirm the underlying security can actually make the move.
Now obviously, your stock needs to move in the anticipated direction of your original assessment. But when this happens, all the positives that usually happen with being long an option should take place. The option should go In The Money before expiration, and you should be able to sell those options at a profit.
When and option goes In The Money, the Delta and Gamma increase, minimizing the effects of Theta (or time decay), and that should make the value of the option greater than what you bought it for.
The Limitations of Percent to Double
Percent to double isn’t much of a strategy on its own – it’s really more of a criteria to help me decide which call or put option I am going to buy.
But what about the downside?
Remember, the two primary things that negatively impact a long call or long put are:
If the stock stays flat, the theta value will come out each day. It does so anyway, but at least with the underlying moving in the direction you want, the delta and gamma should help offset the theta.
If the stock goes against you, you lose theta value and you could also be losing intrinsic value that reduces the value in the option even faster.
Lastly, keep in mind that percent to double is not to be used for picking the stock and what direction it is going to go. You need to determine that ahead of time.
Continue to work on identifying which underlying security you wish to trade options on. That will set you apart from the average investor because you understand value of certain tools and the power they possess in helping you get better at that part of options trading.
Once you’ve a stock picked out with the expected price move and expected amount of time needed, you then use percent to double to see which option trade will yield you that 100%, and which one will yield you that return with the smallest amount of price move.
Here’s Your Trading Lesson Summary:“Percent to double” is a great way to help you select which options to trade. Here’s how it works: 

Good trading,
Tom Gentile
Hello Tom,
Thank you for those great info. I will surely use it in my next trade.
Where do you get the percent to double calculator?
Tom just joined yesterday 9/15 do you always use monthly options or do they vary? thanks in advance
lowest percent to double..Where do I find that with my TD Ameritrade account.. I haven’t been able to find it in my thinkorswim and trade architect platforms ..Any help would be appreciated
lowest percent to double. where do I find it in my thinkorswim or trade architect platforms ?
If you calculate this percentmovetodouble on a stack of different price contracts of the same instrument and expiration, it may be that the smallest move will occur on a far out of the money option. Do you rebalance your choice by considerations of how far out of the money, or do you always favor the contract with the smallest percentmovetodouble?