Options data can be difficult to understand, especially if you’re a newbie. But a feature on the thinkorswim® platform from TD Ameritrade allows you to chart options prices to visualize if premium is expensive, cheap, or fair.
Determining an options premium’s fair value used to be a major headache for most traders
The thinkorswim options charting feature lets traders visualize options price movement
Suppose you spot a stock that you think is poised for an upside breakout. You decide to try and capture some of that upside with an options play. So you bring up the Trade or Analyze tab on the thinkorswim® platform from TD Ameritrade and expand the Option Chain to find an expiration that works for you. You look at a few different out-of-the-money strikes and wonder: “Is this asking price too high, just right, or undervalued?” Smart question. But it’s nearly impossible to tell just by looking at the options prices.
Wouldn’t it be great if you could chart options prices so you can see their relative valuation?
It turns out you can. Let’s walk through the process in just four steps.
On thinkorswim, select either the Analyze or Trade tab. Enter the ticker symbol of the underlying stock you’re looking to trade and pull up an Option Chain. Let’s say you select an expiration that’s between 20 and 30 days out and a strike price that’s actively traded.
The underlying price of the stock you’re looking at is trading at $3,441 (see figure 1). You’re considering the September 2020 3500 call option with a bid price of $111.25 and ask price of $113. Are those prices fair or a little steep? To answer this question, it would help to see how the option has moved in the past. And to do that, you can pull up a price chart for the option you’re considering. That’s right. You can chart an option just like a stock.
From the top of the Option Chain, select the Layout menu, then Customize. From here, you can customize your layout to include the option code for all options.
On the layout customizing window (see figure 2), scroll down to select Option Code > Add Item(s) > OK.
Now the Option Chain will display the corresponding option code for each strike price, as shown in figure 1.
Now, let’s go ahead and chart this code to see how the options charting tool works.
To do this, right-click the September 3500 calls (for example), then copy the option code.
Next, open up the Charts tab and pull up a chart.
Paste the option code you just copied into the symbol box of the chart. The options price should populate your chart screen (see figure 3).
Not much different from a stock chart, is it? The biggest advantage? The price movement is now visual. You can see where the prevailing price is relative to past price movement. Overlaying the theoretical price (purple line) is helpful to determine where price is trading relative to the theoretical value. You can add studies, drawing tools, or any other charting analysis.
Note that when an option gets closer to expiration, trading activity increases. This is indicated in the volume and open interest plotted in the subchart. Of course, a more volatile option is probably going to have a greater price range.
Viewing options on a price chart gives you a different perspective and can help you determine if the option is too expensive, just right, or cheap. And that could ultimately help you with your options trading decisions.
Although there’s never a guarantee that you can execute a trade at your preferred price, the options charting feature at least helps you get a reference point for the options premium.
Options trading can be rife with numerous complexities, as the relationship between options premiums and the underlying stock price tends to be variable. Determining whether options premiums are overvalued, just right, or undervalued used to be a major issue because there’s no quick way to mentally calculate price. That left traders with no solid reference point to make buying or selling decisions. But fortunately, you can chart options premiums on thinkorswim, giving you a clearer perspective and perhaps more pricing choices to work with.
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