Understanding and charting expected moves based on implied volatility and option pricing can be a helpful tool for option traders.
The expected move is a concept that is important for option traders to understand and use. It took a while for me to grasp this when I started trading options, but now it is something I consider in trading on a regular basis. Expected move allows a trader to put into context what implied volatility and option prices are predicting for the future. While expected move isn’t a Greek, I’m including it in the group of Greeks because it is derived value from option prices and is closely related to some of the Greeks and the ways they are calculated.
Option prices increase and decrease with changes in implied volatility. Actually, since implied volatility is just an “implied” concept, Implied Volatility is the explanation of why option prices go and down after taking into account the other key pricing factors of time and price movement. Implied volatility is a percentage that represents the standard deviation of price movement for the next year, as implied by an option’s price. In any normally distributed data set, approximately 68% of the data will be within one standard deviation of the mean of the data. Stock prices aren’t typically normally distributed (they won’t perfectly fit in a bell curve), but for simplicity most people make the assumption that they are and understand the differences in outcomes to consider. I won’t dig any deeper down this hole, because for most purposes the statistics work pretty well for stocks and options, despite the simplifying assumptions that most traders make.
Options have the unique ability to express how the market in general expects prices to vary between the current time and option expiration. This is possible because the market of buyers and sellers settle on prices that balance risk and reward for future outcomes based on all currently available information. The result is that we can determine how much the market is expected to move in any timeframe, based on option prices. It is kind of like sports gamblers betting on the over/under of a game score- the betting line is determined by the cumulative expectations of those wagering based on what is known about the scoring and defensive ability of each team.
Ways to measure the expected move
One very quick way to determine how far the market is expecting the market to move by a given expiration is to add together the put and call premium of the option strike closest to the money. As I write this, the S&P 500 index (SPX) sits at 4108.54. The closest option strike is 4110. Looking 40 days out, the midpoint value of the 4110 call is 125.60, and the 4110 put is 123.15. Adding these together, we get 248.85. Why is this significant? Let’s say one trader buys these two options (a straddle) and another sells the two options. The break even is a move of plus or minus 248.85. Both the buyer and seller would feel like this is a fair trade. The market of buyers are hoping that the market moves more than expected, and the sellers are hoping it moves less. As a balance, it is a measure of the expected move.
Studies by TastyTrade.com show that this at the money straddle pricing often over estimates actual future moves slightly. For their TastyWorks.com trading platform, they use a modified formula that takes the at the money straddle and the first two out of the money strangle prices in a weighted average to calculate an expected move that historically is closer to the moves that actually end up happening. For the same timeframe, Tastyworks has an expected move of +/-263.83, so for some reason at the moment their calculation is slightly higher than the at the money straddle. Only a few trading platforms actually show an expected move calculation, and it is done differently at different brokers as there is no default standard.
How does this relate to implied volatility? Well, as it turns out the implied volatility multiplied times the price of the underlying stock can match fairly close to expected moves calculated by at the money straddles. The straddle or similar TastyWorks method come out to approximately a one standard deviation move. So a very quick calculation is to take implied volatility multiplied by underlying price multiplied by the square root of the fraction of a year until expiration. The square root part is a little much to begin with, but it is based in statistics and math. So, for our previous example, we will use the current VIX value for volatility of the S&P 500, which is currently 24.79. We have 40/365 of a year for 40 day move, and the square root of that fraction is 0.33. With the current SPX price still at 4108.54, we multiply by 24.79%, then by 0.33, and get 336.10. This would imply that the market is expecting something less than a one standard deviation move in the next 40 days. However, the calculated one standard deviation move is just 27% more than the TastyWorks expected move. For something that is “implied” from option prices and calculated in a couple of different ways, that actually is fairly close- close enough for us to have a ballpark estimate of what the market is likely to do in the future.
So, what is the best way to determine an expected move? Well, there is no right answer because no one really knows what the future holds. But, we know that more often than not, options are overpriced for the moves that eventually happen, so implied volatility will typically be more than realized volatility, so methods that show smaller expected moves will likely be closer over time. But to use the straddle method, a trader must have access to option tables for every expiration of interest and do calculation after calculation to see how the move evolves with time. Using the calculation of volatility and the square root of time allows a quick way to estimate moves over a broad range of time. For option sellers looking to “play it safe,” this calculation may encourage the choice of wider short strikes.
Charting Expected Moves
Once a trader understands the concept of the expected move, it often helps to see how this works out on a chart over time. Let’s look at a chart for early 2022 for SPX.
At the beginning of April 2022, we can see the expected moves for the next few months.
After a week we can see that the moves stayed inside the expected move. With another week of information, we can update our expected move chart.
As time passes, the expected move changes as well with new pricing information.
As it turned out, this period of time included a fairly strong bear move down that was outside the expected move for a while, but then returned inside.
Using the original expected move, we can see how the realized move played out.
This example illustrates a point worth noting. The longer the time duration, the more likely that the realized move will stay within the expected move. Time allows probabilities to play out more.
Another factor with expected moves to consider is that implied volatility can vary significantly over time and those variations can dramatically impact expected moves of the future. Consider that an expected move when VIX is 30 will be twice as large as when VIX is 15. When implied volatility is high, the market is expecting big moves in the future. When IV is low, the market is expecting calm in the future. When the market gets volatile, it tends to take a lot of time to calm down. On the other hand, when markets are very calm, sudden changes can cause sudden spikes in implied volatility and future expected moves. It is far from an exact science, but it is the best real time future indicator of movement we have.
Regardless of how we calculate the expected move, it gives us a good idea of what the market currently collectively thinks the future movement of pricing will be. For planning option strategies, this can be very helpful.
In the bear market of early 2022, I re-discovered a strategy that I had mostly discarded during the bull market of the preceding years, the Iron Condor. The Iron Condor is primarily a neutral trade that when managed with aggressive rolls can provide good returns in choppy, down-trending markets. My goal is to maintain a position that can tolerate fairly big market moves up or down, while benefiting from time decay.
I had discarded the Iron Condor trade because I found I was always losing on the call side of the Iron Condor. Initially, I liked the idea of making money on both sides, but I found in a constant up market, I often lost more money from calls than I made from puts. So, I switched to mainly put spreads and other short put strategies, which did great. But then 2022 came along, and it was clear that the market was no longer going up, and that we were heading for a bear market. I started adding credit call spreads to my credit put spreads to balance risk and have a neutral strategy. Over time I saw that some of my set ups and management strategies were working better than others, so I investigated and came up with a process that now works well in the current bear market environment.
The basic setup of an Iron Condor
Selling Iron Condors is an extremely common option trading strategy. The strategy is a combination of two calls and two puts, four separate options working together. Usually, an out of the money put and out of the money call are sold, and then a further out of the money put and call are purchased to define the risk and reduce cost. The trade wins at expiration if the price ends up between the short strikes, and hits max loss if the price moves beyond one of the long strikes. However, I rarely if ever hold to expiration and roll my position way before expiration is a concern.
Here is an actual California Condor with a profit curve of an Iron Condor option trade drawn over it.
An Iron Condor is named after the shape of the profit curve at expiration, which kind of looks like a condor with a bit of imagination, kind of like how star constellations are named. The iron part of the name designates that it is made up of a combination of puts and calls, as opposed to a put condor, or call condor which has four legs of the same type of contract. An example of a put condor is the broken wing put condor strategy I have described in a separate post.
To build on the condor metaphor, the difference in option strikes are often referred to as the body and wings of the combination trade. The body is the difference between the short put strike and the short call strike. The wings are difference between the call strikes or between the put strikes. The wings on the puts may be equal in width to the wings on the call, or they may be different. Wings that are different widths might be call unbalanced, or broken wings, as the profit profile will no longer be equal levels each end of the price ranges of the trade.
My preferred Iron Condor setup
What I have determined works best for my management strategy is to use the S&P 500 index options (SPX), targeting a starting point 28-35 days from expiration, with option Delta values of 30 for the short strikes and around 20 for the long strikes. I like equal width for the put side and call side, so the Delta values for calls will be a bit wider than the put side, and the net Delta of the Iron Condor will be slightly negative. With implied volatility between 20 and 30%, I generally target 100 wide wings, with the body between the short put and short call of around 15o points on SPX.
Here is the setup of an actual trade from early 2022 on SPX using the criteria from this post. In this example 30% of the wing width was collected, and a little lower deltas were used.For the above example trade, the goal is to keep in the profit zone for the first several days of the trade- the positive area under the 21 DTE curve.
I use SPX because it is the least likely underlying to have outsized moves. It is also very liquid to trade, has tax advantages in taxable accounts, and has expirations multiple times per week in the timeframes I trade. Depending on account size or type, other option products for the S&P 500 may be appropriate and can be used instead with essentially the same strategy. Other indexes or even individual stocks can be used, but managing can tougher with bigger moves, less expirations, and less liquidity.
I use 28-35 days to expiration (DTE) because my position can tolerate most reasonable moves while still having decent decay. I’ve used timeframes as low as 7 DTE, but find that many one day moves can push a position out of the profit zone, and I find myself fighting a losing battle too often. Longer durations of up to up to or over 100 DTE can work, but decay is slower, and there are very few expiration choices to roll to for the way I like to manage. All that said, my plan can vary to different timeframes, with the goal that I will only hold the position for somewhere between 1/10 and 1/5 of the time left to expiration- for example, a 30 DTE would be held 3-6 days before rolling, while a 100 DTE position would be held 10-20 days.
I choose 30 delta for short strikes and 20 delta for long strikes because they are the most forgiving in a move, while still offering reasonable decay as a spread. Higher deltas allow for more premium to be collected, and price movement will often be well tolerated as the long strike of the tested side will increase and the short strike of the untested side will decrease in value, compensating for much of the increase in value of the tested short strike. The goal of my management strategy is to keep this relationship intact, so that price movement has little impact on my option position value. I think of the area where deltas of the four options balance each other out as the profit zone. Staying in the profit zone allows Theta, or time decay, to do its work and deliver profits. I have used strikes with a bit higher delta values, but if too high, the two sides will get tested more often and then require more management. In the past, I often used lower delta spreads for safety and better percentage decay. However, I have discovered that low delta positions don’t actually tolerate price movement well because the untested side of an Iron Condor quickly runs out of premium to offset any of the movement of tested side. This observation has been a game changer for my use of Iron Condors.
I use equal width wings on the Iron Condor for a couple of reasons. Equal width seems to tolerate price movement, both up and down. Equal width also leads to a net negative Delta position, decreasing the total position profit when prices go up and increasing profit when prices go down, which is good in a bear market where downturns are frequent. Negative delta actually is somewhat neutral if the value is only slightly negative- Iron condors also have negative Vega, or decrease profit when implied volatility goes up. So, typically when prices go down, implied volatility goes up, and impacts of the negative Delta and negative Vega cancel each other out.
My Iron Condors are opening somewhere around 50% of the width of the wings. For example, if I have 100 wide wings, I would expect to collect $50 premium. I initially resisted this, thinking that the probabilities would be too low. However, since the time in the trade is so short, and I plan to actively manage moves against my position, I find that the risk reward ratio becomes favorable. However, the example trade that I’ve used is a little wider body and collected only 30% of the width.
This chart shows previous market movement at the time of entering a trade, along with the expected move based on implied volatility and boxes to illustrate the strikes of the Iron Condor. The dates are the opening date, the expiration date, and the planned target date to close. This trade used long strikes that were at the expected move at expiration.
I have devised a graphic that may help to visualize this setup in regards to the expected move and time frame of the trade. The graph has several components- a historic rendering of what the index has done for the past several weeks, a curve showing the expected move for the next several weeks based on current implied volatility, and two boxes to represent the put and call strikes shown from the time of opening until expiration, and the target date to take action. My point with this chart is to show that while the strikes chosen are within the expected move at expiration, they are outside the expected move through the time I expect to be in the trade before I manage it. Said another way, if the position were held to expiration, it is very likely it would be breached on one side, but because the plan is to manage early, a breach is not likely- it would take an outsized move beyond the one standard deviation expected move.
Managing the trade with rolls
I manage my Iron Condor with what I think is a fairly unique rolling strategy. I roll my positions out in time and change all strikes in the direction that price has moved. If price goes up, I roll all the strikes up. If price goes down, I roll all the strikes down. I just roll whichever way the market goes. Here’s the interesting part- if I keep in the “profit zone,” I can roll up or down for a net credit with each roll, and my existing position will have a net profit. Usually, one side will be sitting with a profit and one side with a loss. The losing side is being tested- its strikes have higher deltas than when the trade started. The profitable side will have lower deltas than when the trade started. My profitable side should have a bigger profit than the loss of losing side. When I roll, I will likely have to pay a debit to get my losing tested side back to a good set of strikes at the new expiration. However, I should be able to collect a bigger credit on the profitable untested side than my tested side cost. Ideally, every roll is closing a profitable trade and collecting a net credit to open its replacement. All of this sounds great, too good to be true, but there are a number of details to unpack.
The first challenge is to stay in the profit zone. My general rule is that if I keep my untested short strike must never drop to a Delta value below 15. The reason is that when the Delta of the untested side gets below this point, it quickly stops being able to meaningfully contribute to offsetting price movement in the tested direction. For example, if the price drops, the short call will get further out of the money and drop in value, while the puts will go up in value. For a while the Deltas will mostly balance each other out, but as the Delta of the short call drops below 15, the put spread will start increasing much faster and the calls decreasing less. If this happens, it is time to act and roll all the puts and all the calls down to where there is again premium on both the put and call side. If price has gone up too much, it’s time to roll up all the puts and calls.
Actually, I try not to wait until the untested side gets to 15. I think of my position of having three possible states, green, yellow, or red. Green is when both short strike’s Deltas are above 20- everything is great and there is nothing to do. Yellow is caution, one of the short strikes are between 20 and 15, and probably will need to roll soon. Red is stop and take action, one of the short strikes is 15 or below, so it is time to roll immediately. So, my choice is clear for Green or Red, but I need to use some judgement in the Yellow state. If the day starts in the Yellow, I am more likely to let it ride for a while and watch to see if it recovers or gets worse. If the market has trended throughout the day and moved into the Yellow, I am likely to roll before the end of trading so I don’t end up deep in the Red overnight. If there is a strong trend pulling the position quickly toward Red, that may also be a good indication to act. Yellow is a judgement call.
I find that it is harder to have a profitable, credit roll when tested on a quick up movement. As mentioned earlier, equal width wings means that there will be a negative delta overall, and while volatility reduction can help, big up moves can be hard to stay on top of. That’s why this strategy works best in a bear environment, when the market is trending down.
Don’t over manage. Markets bounce around a lot, and it can be tempting to want to act on each little trend that happens. If I have the right strikes- the right body width and wing width for the market conditions, my position should be able to tolerate price movement. If I’m trading at 30 DTE, I want to wait 3-6 days between rolls, so I need to be choiceful about not rolling too often. If the market moves a huge amount in a couple of days, I may need to roll early, but then I’ll want to try to go longer before the next roll. The other thing to consider is that often the markets overshoot in one direction or the other, so I try not to move too far to chase moves that go on for days, and stay patient that the market will counter the trend.
If a position isn’t winning regularly and isn’t holding its premium in control, that’s a sign that the strikes aren’t right for the market and the duration. For a while I was trading 7 DTE Iron Condors on SPX with around 100 wide bodies and 50 wide wings. I would adjust nearly every day, but I couldn’t keep the position in the profit zone, and I often took losses. There wasn’t enough space in the body and the wings weren’t helping enough. By widening out the body and wings and adding more time, I found the position much easier to manage, and more likely to be profitable, and much less likely to take a big loss.
One way I can tell if I have a forgiving position is to compare my premium to the premium of the same position a few strikes higher or lower. For example, with Schwab StreetSmart Edge, I can pick Iron Condor as a strategy, pick an expiration date, pick a body width and a wing width. The application will then give me a list of strike combinations and premiums for those parameters. If all the choices around my preferred strikes have similar premium, then I know that price movement will have minimal impact on my chosen position. If there is a rapid change in premium for other strikes above or below my choice, it means my Iron Condor parameters are not very forgiving, and I should adjust time or widths or both. Other brokers will have similar ways to compare prices by shifting up or down all the strikes.
I have updated the earlier graphic to illustrate how a change in price over time will dictate the choice of a new position to roll to. The new price now dictates a new expected move, and new ideal strikes and expirations. Hopefully, this chart will help those that are fond of graphical illustrations.
After 7 days of mostly down moves, I decided to roll down my positions and roll out to a later expiration. In this image, the old position and expected move are there along with an updated expected move and new strikes.
Eight legs in the Roll
Since an Iron Condor has four legs, rolling involves closing four legs and opening four new ones. I don’t think any broker or exchange allows a eight-legged trade, so at a minimum this will take two trades to complete the roll. My preference is to roll the puts as a trade, and roll the calls as a trade. I usually start with the side that is being tested and might need a debit to roll to a new expiration and strikes. Then I do the other side, usually moving the same amount and keeping the same width, expecting to collect more to roll the untested side than I pay to roll the tested side.
At times, I may have a situation where I don’t have enough buying power to roll one side while the other side remains in place. If that happens, I’m probably using more of my buying power than I should, or the position is just too big for my account. It isn’t that big of a deal to manage the situation, however, I just close the untested side out and roll the tested side, then open a new position on the untested side. Worst case scenario, I can close the whole Iron Condor at once- freeing up its buying power, and then open a new one with the same buying power. As long as the wing widths are the same and the new Iron Condor collects more to open than the old Iron Condor cost to close, there should be a net gain in buying power. But again, any time buying power restricts a trade, it is probably time to pare down some positions in the account.
How Iron Condors tolerate price movement
Probably the best way to explain how an Iron Condor tolerates price movement is with an example. Earlier in this post I showed an opening trade from April 1, 2022. Let’s look at it again and look at how it fared after 7 days.
Here is the setup of an actual trade from early 2022 on SPX using the criteria from this post.
Notice that the premium collected is approximately $15 each on the put side and the call side.
After a week, price has dropped to 4500, but the premium has dropped for a profit.
The premium on the put side has gone up to around 16.50, while the call side has dropped to just under $6.
After 7 days the premium increased on the put side but decreased on the call side, as illustrated by the larger and smaller strike position arrows, and the result is a net profit.
So, after 7 days, the trade made about $800 on $10,000 risk, an 8% return. But, that’s just the start- the plan is to roll, and so the closing trade above was combined with the following opening trade:
On April 7, this trade was opened while closing the old position for a net credit and strikes that are back at the edge of the expiration expected move.
The combination of closing the old trade and opening the new trade is a net credit of just under $14 premium. This is the result we are looking for- a profit on the trade being closed, and a credit to move out in time and get to better strikes for the latest situation.
And just to finish the example trade, let’s look out another week and see what happened to the market and the trade that was rolled to.
After rolling down, the market kept going down, but stayed within the new strikes with plenty of space to spare.
By April 13, the market had dropped even further, approaching where the puts from the original position had been. However, the roll down gave the new position plenty of space and the trade was sitting at a profit, and ready to roll again.
After 6 days, the rolled position had decayed even after a market move. Again, puts lost money, but the calls made the position profitable.
This trade made $1430 in 6 days, a 14% return on capital. Since the market went down, the put side of this trade lost money, although not that much since the price didn’t end up that close to the put strikes since our new strikes were lower than the old ones. Time decay helped counter the price movement against the puts. The money was made on the call side through both price movement and time decay. In the end time decay, represented by Theta, eats away premium as long as price doesn’t get too close to the strikes.
These are examples of trades I did during the Spring of 2022 in the face of a bear market. Not every trade faired this well. Some market moves were too fast and too far for me to be able to roll before the position went too far to one side. But more often than not, this rolling methodology has kept me from having positions blown out, and keeps day to day portfolio value from varying out of control.
You may notice that the example trades shown here don’t exactly follow all the mechanics I’ve described. Since those trades I’ve become a little more likely to intervene early, although it’s a balance with avoiding over-adjusting.
Finally, I don’t always get my rolled positions re-centered, like I did in the example I presented here. Often, I’m happy to just move in the direction of the market and make sure my new strikes are a bit out of the money on the tested side. In this crazy bouncy market, we get lots of reversals, so I let my positions stay a little off when the market has moved a long way and technical indicators suggest the last several days move may be about finished. However, these choices come down to individual trader preference and market outlook. No one knows what is happening tomorrow or next week, so we each have to decide what trade is best based on the information available. For a real life example of this type of decision making in action, see my post on the Goals of Rolling an Iron Condor.
the S&P 500 index is very appealing but most traders don’t know there are at least 7 different great choices for options tied to the index
For many new options traders, trading the S&P 500 index is very appealing for a number of reasons. But most new traders are not aware that there are at least 7 different great choices for options tied to the index. Most have multiple expirations each week and are very liquid. Each choice has unique differences from the others that may make it appealing in certain circumstances. For a long time I was only aware of one way, and when I now tell others about these additional choices for options, it’s usually a pleasant surprise.
Background
The S&P 500 index is the most quoted benchmark of the stock market for good reason. It is made up of the 500 largest US publicly traded companies. The index is weighted by market capitalization of each firm, so the largest companies have more impact on the index than smaller ones. In fact, as of this writing, the seven largest firms are responsible for 30% of weight of the index. While the news media often leads market reports by sharing the Dow Jones Industrial Average, most traders and asset managers pay little to no attention to the Dow because it only includes 30 stocks and has a bizarre price weighted averaging system that gives the most weight to companies with the highest price per share.
If a trader can choose only one investment to own, some form of the S&P 500 index would be the most logical choice. When selling options, unexpected moves outside of expectations can lead to large losses. Many studies have shown that the S&P 500 index is much less likely to have an outsized move than individual stocks or even other indexes. TastyTrade has done numerous studies on this that are free to review. So options on the S&P 500 index can be a large part of a trader’s strategy. Understanding the variety of choices for trading options on the S&P 500 can be very helpful for traders of all experience levels.
Mutual Funds?
Almost every employee retirement account offers a mutual fund that mimics the S&P 500 index. While mutual funds are great for retirement accounts that rarely change holdings, they aren’t that useful for trading in general, and specifically not for options. There are literally dozens of mutual funds based on the S&P 500, but they share the same trading issues- they only trade at the closing price of the day which isn’t known until after a trade is submitted, and there aren’t options on any of them. Active traders want to be able to buy and sell at any point in the trading day and have options for hedging or amplifying returns, so mutual funds just won’t cut it.
Exchange Traded Funds
In recent years, exchange traded funds (ETFs) have grown in popularity. These funds are structured to match the holdings of underlying indexes or other trading strategies. The funds actually hold shares in the index that they are matching performance with. By far the largest ETF is the SPDR S&P 500 ETF Trust, which goes by ticker symbol SPY, and follows the S&P 500 index. It is priced at approximately 1/10 the price of the index per share. So, if the S&P 500 index is priced at 4500, the SPY ETF will be priced around 450. The SPY price isn’t exactly 1/10 of the S&P 500 index price, but slightly less by varying amounts. The variations are due to fees that come out of the ETF, and the impact of dividend payouts. SPY pays dividends once a quarter, and the price of SPY gets closer to 1/10 of the S&P 500 index as the dividend payment approaches and then drops after the dividend is allocated. Generally, the variation is less than one dollar in SPY, so if the S&P 500 index is trading 4500, SPY is likely to actually trade at somewhere between 449 and 449.50. For most traders, this difference isn’t a big deal, but just a minor factor to be aware of when comparing SPY to the S&P 500 index. Because of its name and ticker, SPY is often referred to as the “Spiders.”
SPY option contracts are based on 100 shares of SPY. If an option is exercised or assigned, the option seller will either be forced to buy or sell 100 shares of the SPY ETF. Because SPY pays a quarterly dividend, traders who sell calls on SPY need to be aware of the risk of having the call option exercised on dividend day. If a trader has a call near expiration that is at the money or in the money, it will likely be exercised because the dividend can be captured by the owner of the stock. If the call seller doesn’t have shares to be called away, and the option is executed, not only will the seller be short shares of SPY, but the seller will have to pay the dividend to the broker that they are borrowing the shares from. Only call sellers have to worry about this, but it is a real consideration four times a year.
Both SPY and options on SPY are extremely liquid with bid-ask spreads normally at one penny. I’ve found option trades that include four legs, can usually be filled immediately for two cents away from the mid price of the combined bid-ask spreads of all the legs. Options are priced in increments of one cent, so pricing can be fairly precise. SPY options have 3 expirations per week, with contracts for every Monday, Wednesday, and Friday. Adjustments are made for holidays when markets are closed. Every expiration has dozens of strikes, going several expected moves above and below the current price of SPY.
While SPY isn’t the only ETF to track the S&P 500 index, it is the predominant one, and really the only ETF to really consider for trying to match the performance of the actual index. There are a couple of other ETFs to consider that are designed to magnify or reverse the performance of the S&P 500 index. For some strategies, these might be helpful.
UPRO is an ETF from ProShares that is leveraged to deliver 3x the performance of the S&P 500 index. Officially, it is called the ProShares UltraPro S&P 500 ETF. So, if the S&P 500 index goes up 1% in a day, UPRO will go up 3%. However, the reverse is also true- if the S&P 500 index goes down 1% in a day, UPRO will go down 3%. To keep this relationship working, the holding in the ETF are adjusted each night, so over time the ETF won’t exactly keep pace at 3x the performance. The ETF relationship is more precise day by day than longer term, but will be relatively close to 3x. UPRO has options expiring every Friday and is somewhat liquid with wider bid-ask spreads than SPY. Because of large swings in price, the ETF has occasional splits to keep the share price reasonable, and the daily adjustment of holdings can alter the precision of the leverage factor, so the share price isn’t consistently convertible to a multiple of the S&P 500 index.
The opposite effect is achieved from the SDS, or Proshares Ultrashort S&P 500 ETF. SDS is set up to delivery -2x the performance of the S&P 500 index. So, if SPY goes up 1%, SDS goes down 2%. Over time the price of SDS tends to get lower and lower, and a reverse split is needed to get the price up to a reasonable level. Options on SDS also expire weekly. Both SDS and UPRO options are based on 100 shares of the corresponding ETF.
Options on leveraged ETFs are much more volatile than on non-leveraged ETFs. Because traders of these options know that there is multiple times price movement, options are priced accordingly. Because of this, strategies with options can perform very differently than with options based on the non-overaged SPY. The switch from SPY options to UPRO or SDS options is not as simple as it might appear, so research thoroughly before jumping in to these unique options.
There are other ETFs that follow the S&P 500 index as well as others that leverage the S&P 500, but they don’t trade with as much volume, and their options trade less frequently. Why trade a product that is less liquid, with fewer options, and much lower option volume when a better choice is available? I see no reason to use anything but SPY, UPRO, and SDS.
There are also ETFs that represent sectors or portions of the S&P 5oo, or weight the 500 stocks of the index equally. So, for value vs. growth, or Finance stocks or Utilities, there’s are ETFs with options of every flavor. But none of those represent trading the full S&P 500 index, so we won’t dig in any further into those products, because the point of this discussion is ways to trade the benchmark index.
For most traders, SPY options are the only options on the S&P 500 index they use, and many traders aren’t aware of any other choices for trading options on the index. But, we’ve only just begun.
Index Options
Why trade options on an ETF based on an index when you can simply trade options on the actual index? Index options remove the ETF from the mix and link options directly to the index. For the S&P 500, there are two index options available, SPX and XSP. SPX is literally the S&P 500 Index, and XSP is the Mini S&P 500 Index.
Traders are often not aware of these ticker symbols or the fact that options are available for these two indexes. There are a couple of reasons for this. There is no way to actually buy or sell the actual S&P 500 index directly, a trader can’t buy or sell shares of SPX. Additionally, since SPX is an index and not a stock or ETF, many brokerages don’t show it as SPX. For example, Schwab lists it as $SPX. Other sites may show it as ^SPX or .SPX. The point is that you have to know what you are looking for to even find it. Since SPX is literally the S&P 500 Index, it is priced at the full price of the index. So, if the S&P 500 Index is at 4500, SPX is at 4500. They are exactly the same.
Okay, SPX is the S&P 500 index. But, what is the Mini S&P 500 index, you may ask? XSP, or the Mini S&P 500 is simply an index that is 1/10 of the S&P 500. However, unlike SPY, which is approximately 1/10 of the S&P 500 index, XSP is exactly 1/10 of the S&P 500 index. Why do we need an index that is 1/10 of another index? It’s all because of options and sizing of positions.
Options on SPX don’t represent 100 shares in SPX because SPX doesn’t have shares. Instead, SPX options represent a value of 100 times the value of SPX. Think of it as if SPX had shares and the options represented 100 shares, even though there aren’t any shares. XSP options represent 100 times the value of the XSP. So, in both cases we still have a multiplier of 100 as we do with ETF options. This is where the similarity in options end.
One difference is that dividends are not part of the S&P 500 index. Many of the 500 stocks in the index pay dividends at various times throughout each quarter, and those payments have an impact on the individual stock price, which will then impact the price of the index. But the index has no mechanism to pay dividends because it is just an average of the prices of the 500 stocks it tracks and isn’t tradable itself. So, option buyers and sellers of SPX and XSP don’t have to consider dividends as an event, like traders in the SPY ETF.
Since index options can’t be settled in shares, they settle in cash when they expire. In many ways, this can be a lot easier. If an option expires $5 in the money, a call buyer will receive $500 from the account of the call seller at expiration because of the 100 multiplier. If an option expires out of the money, it is worthless and there is nothing to settle.
Cash settlement can be a bit confusing at first, so just realize that there is nothing to actually buy or sell from assignment- a put seller that is assigned doesn’t have to buy 100 shares, they just have to pay the difference in the current price at expiration from the strike price of the option. If the trader sold a put on a stock or ETF, they would be assigned shares that they would buy for more than the current price, which they could turn around and sell at a loss. Index options eliminate the step of buying and selling shares, and just settles the difference in price with cash.
Index options use European style option assignment, while stock and ETF options use American style options. American style options can be executed at any time by the option buyer, and this becomes a consideration for option sellers that have positions in the money before expiration. However, European style options can only be executed at expiration. So, sellers of index options don’t have to worry about having an early assignment before expiration, and buyers don’t have that option. And since index options are cash settled, there really isn’t an “option” at all. In the money index options are simply “settled” at expiration.
SPX options have lots of different expirations. Originally, these options only had expirations once a month on the third Friday of the month. Later, month end and quarter end expirations were added. Then weekly expirations every Friday were added. And now there are Monday and Wednesday expirations. Soon, maybe by the time you read this, there will be options expiring every trading weekday when Tuesday and Thursday are added.
One holdover from the original monthly expiration is that monthly index option expirations are different than all the other expirations in a couple of ways. First, and most importantly, monthly index options expire in the morning (AM) of expiration, while all other expirations expire at the close (PM) of trading. For SPX, there are actually two option expirations on the third Friday of the month, the monthly AM expiration, and the Friday PM weekly expiration. The settlement price for AM expirations of SPX is based on the opening trade price of each of the 500 stocks of the S&P 500 index. After each of the 500 stocks has traded on expiration morning, the prices are calculated to determine a settlement price for expiration. However, trading on the expiring option is stopped at the close of trading the day before. So, SPX option sellers and buyers are stuck with their positions from Thursday afternoon until Friday morning not knowing what the index price will be for settlement until the market actually opens and sets the price. For PM expirations, it is simpler, when the market closes, option trading stops and expiration settlement is based on the price of each of the 500 stocks in their last trade of the day. If you watch the price at the closing bell, you will see it change slightly by several cents after the close as all the different orders that execute at the market close get accounted for. The second way that AM and PM expirations vary with index options is that when the option contract is listed, monthly contracts use the ticker symbol SPX, while all other expirations use SPXW. The W is for weekly, even though the expirations may be quarterly, monthly, Monday, or Wednesday, and soon Tuesday or Thursday. So for S&P 500 Index options, just know that SPX listed options expire in the morning (AM) and SPXW listed options expire in the afternoon (PM). Either way, when you are searching for option listings, most brokers list SPX and SPXW options together under SPX.
XSP options are a more recent creation, and only have PM expirations. There aren’t different naming conventions either. Settlement works the same, with prices set by the final trade of each of the 500 stocks of the index when the market closes.
Another difference between SPX and SPY options is that SPX options are traded in increments of 5 cents. Since SPX is 10 times the price of SPY or XSP, trading increments or tick size is actually more precise on a percentage basis for SPX. XSP trades in increments of one cent like SPY. SPX options are also very liquid and orders can usually be filled 5 cents away from the mid price, even in multi-leg orders. There is a little difference based on trade volume of different expirations. Monthly expirations typically have the most volume, followed by Friday PM expirations and month-end expirations. Monday and Wednesday expirations have the least volume and can sometimes be slightly harder to fill, especially for strikes away from the money with more than a week until expiration.
XSP have a lot less volume than SPX or even SPY options, so they can be a little less liquid. Because of their pricing, they trade very similar to SPY, but with a little less liquidity. Since XSP is an index option, there is no worry of assignment, and dividends are not a consideration.
Some brokers don’t allow trading of index options in their accounts, and some strategies are not allowed with index options in certain types of accounts. Some brokers charge higher commissions and fees for index options than for stock and ETF options, so watch out!
Finally, index options get a different tax treatment and have a different accounting treatment at the end of the calendar year. Index options fall under Section 1256 of the tax code which allows a trader to classify 60% of the gains from trading index options as long term, while only 40% are short term. For taxable accounts of traders in mid to high tax brackets, this can be a significant advantage! It doesn’t matter if the option was held for a minute or six months, the 60/40 tax assignment applies. The other part of 1256 treatment is that index option positions are “marked to market” at the end of the year, meaning that a trader considers the option to be a profit or a loss at the end of the year even if the position is still open based on the price at the end of the year of open positions. In stocks and stock options, only positions that have been closed are evaluated for a profit or loss. Using mark to market can be a bit confusing the first time around, but most brokers do all the calculations and provide them in a year end tax statement.
The CBOE has announced another index option on the S&P 500 index to start trading very soon, call Nano options. This index will be 1/1000 of the SPX, or 1/100 of XSP, to allow very small option trades on the S&P 500. Supposedly the ticker symbol will be NANOS. Stay tuned for more details.
Futures Options
There are two futures contracts on the S&P 500 index that offer options. The primary one is called the E-Mini S&P 500 Futures, which uses the symbol /ES at most brokers. In listings of futures contracts and futures options the symbol will be followed by a letter to designate the month the future expires and a number for the year of expiration- for example /ESH2 represents the future contract expiring in April of 2022. The other futures contract is called Micro E-Mini S&P 500 Futures, and uses the symbol /MES. Some brokers may use other characters to designate futures instead of the forward slash, and some may require approval of futures to even see the ticker symbols. Consult with each broker for details.
Futures are tradable contracts based on the price of the underlying index at the expiration of the contract. Futures contracts in general expire at a variety of times in the month with /ES and /MES expiring on Wednesday mornings and settling to opening prices of the S&P 500 index. Since the futures contract is based on what the market expects the price to be at expiration, the price of the future is usually a little less or sometimes a little more than the current value of the S&P 500 index. However, it generally doesn’t vary that much because the current price is one of the best indicators of what the future price might be and futures buyers and sellers won’t let the prices to diverge that much because it presents an opportunity for arbitrage between the different values, knowing that at expiration they will converge. At any given time, there are many different contract expirations available to trade, going months out in time. The contract month closest to expiration is called the front month. Buying a front month futures contract is as close to directly owning the S&P 500 index as you can get. The value of the futures contract goes up and down with the index.
A single /ES contract is valued at 50 times the S&P 500 index. One might think of it as owning 50 shares of the S&P 500 index if the index price were the price of a share. A single /MES contract is valued at 5 times the S&P 500 index. These values are known as the notional value. However, futures contracts are priced at prices similar to the actual S&P 500 index, regardless of the notional multiplier.
Let’s take an example. Let’s say that the S&P 500 index is currently at 5010, and front month futures contracts for both /ES and /MES are trading at 5000 as they are slightly less. The /ES contract would have a notional value of $250,000, and the /MES would have a notional value of $25,000. If the market went up 100 points on the S&P 500, and both /ES and /MES went up to 5100, the owner of one contract of /ES would make $5000, and the owner of /MES would make $500. For most people $250,000 for one contract is too expensive, but futures contract owners aren’t required to have the full amount in their account, but just a fraction due to the assumption that the price will only move within a small percentage of the index price. If the price moves more than expected against a contract owner or seller, additional capital will be required. This practice is called span margining, and can be very helpful to allow traders to leverage a position, but also very dangerous if over-used and the market moves against a position. For example, if a trader buys an /ES contract priced at 5000 and has $50,000 in their account, a 20% decline in the market to 4000 would wipe out the account. While /MES is one tenth the size, the problem can be the same for a trader with a smaller account.
So far we’ve talked just about the futures contracts themselves. The topic of this post is trading options on the S&P 500 index, not trading futures on the S&P 500 index. So, let’s talk about how options on futures work. In particular let’s look at options on /ES and /MES. One key difference from other options we’ve looked at is that /ES and /MES options don’t use a 100 multiplier, like stocks or index options. Instead, futures options are an option to buy or sell one single futures contract. Which futures contract is the option associated with? Typically, it is the futures contract that is next to expire after the option expires. So, an option on /MES expiring on the first Friday in March is tied to the March futures contract, which will still have time remaining when the option expires.
So, buying an /ES call gives the buyer the option to buy one /ES futures contract at option expiration, and buying a /MES put gives the buyer the option to sell one /MES futures contract at option expiration. So, settlement of the option at expiration doesn’t settle in stock or in cash, but in a futures contract. The price paid for the futures contract is the strike price of the option. For example, if a trader buys a call option for /ES with a strike price of 5000, they would get to buy an /ES futures contract at options expiration for $5000, multiplied times the /ES futures multiplier of 50, or a total of $250,000, assuming that /ES is trading above 5000, making the option in the money. On the other hand if the price of /ES is below the strike price of the call option, the option would expire worthless. Similarly, if a /MES 5000 put expired in the money, the settlement would be to sell a /MES futures contract for $5000 multiplied times the futures multiplier of 5, for a total of $25,000.
There are futures options for /ES and /MES that expire every Monday, Wednesday, and Friday, so there are plenty of expirations to choose from. And futures and futures options trade virtually around the clock, from Sunday afternoon until Friday afternoon. In fact, the price of /ES in the overnight hours moves around quite a bit based on news and as the opening of the market approaches, it is a fairly accurate indicator of where the market will open. Meanwhile the S&P 500 index stays the same during the overnight, because it is based on a calculation from the trading of the 500 stocks in the index, which don’t broadly trade at night.
The span margining ability to trade using the buying power associated only with a calculated expected move applies to futures options as well as futures contracts. As a result, traders can put on highly leveraged trades without consuming a lot of buying power. With this capability comes significant risk. Traders have to be very aware at all times of the true total risk that comes with trades in futures options. With futures options, the buying power used is not a good indicator of the capital at risk in the case of a very large move of the market up or down. Some brokers allow selling of naked futures options for very little buying power, where selling the same notional value of SPX or SPY could easily require ten times more capital even though the true risk is the same. Many trading strategies with futures options may seem very safe because they are high probability trades- perhaps they win 90% of the time- the problem is when the losing 10% happens and the trader is not prepared for the damage that occurs to the account. Risk management is critical in all options trades, but particularly in futures options using span margin. Stops and hedges become the difference between staying solvent and going broke.
Like index options, futures and futures options also use section 1256 tax treatment with 60% long term gains and 40% short term gains, and are marked to market at the end of the year. There are no dividend risk issues.
One final unique advantage to futures options is that they are exempt from the Pattern Day Trade rule. For accounts under $25,000 where trades are opened and closed the same day, a trader can have severe limitations placed on an account. Generally, the limit is five day trades in a rolling seven day week. This can be stocks or options. Futures and futures options are governed by different regulations, so many day traders favor futures.
Many brokers have significant approval processes to be allowed to trade futures or futures options. Some limit them only to standard taxable margin accounts. Other brokers don’t allow them at all. Go to the office of your broker and see if anyone there has any experience trading futures or futures options- it is likely no one there has a clue and they will tell you not to do it. If you have friends that trade in the market, chances are that almost none have ever traded a future or futures option, so you are likely on your own. Your best source for help will be specialist from your broker’s headquarters, specialized training materials, or online resources from your trading community as I discussed in an earlier post.
If trading futures options is so complex, hard to understand, and risky, why do it? For many strategies, futures options can fill in gaps at a low capital requirement. Some hedging strategies can be too expensive with stock or index options, but more affordable with index options. Because of the unique multipliers, futures options for the S&P 500 index may be just the right size for a particular need. And finally, because the futures prices move and trade all night, futures and futures options allow trading on that information at some brokers.
Review of choices
After a lot of discussion and explanation, we have come up with seven choices for trading options on the S&P 500 index. Five of these are directly correlated to the index, and two are leveraged. Remember that the UPRO ETF moves up and down with the S&P 500 index, but three times as much each day. SDS, the UltraShort ETF not only moves the opposite direction of the S&P 500 index, but twice as much in the opposite direction on a percentage basis each day. Because of this leverage, the options on these two ETFs behave in unique ways which can be helpful for some strategies. However, most traders are more likely to want options that are based on underlying entities that move on a 1:1 basis with the S&P 500 index. So let’s review those choices.
Ticker
Type
Index vs Strikes
# of Shares or Multiplier
Notional Value @ SPX = 4000
Settle as
Tax Treatment
SPX
index
1 : 1
100
$400,000
cash
60/40
/ES
futures
1 : 1
50
$200,000
one contract
60/40
SPY
ETF
1/10
100
$40,000
100 shares
short term
XSP
index
1/10
100
$40,000
cash
60/40
/MES
futures
1 : 1
5
$20,000
one contract
60/40
This table lists key differences in the five main choices for options on the S&P 500 index, listed in order of notional size. In this table notional value refers to the amount of capital controlled by a single option with a strike tied to the S&P 500 index being at 4000 (SPY and XSP would have strikes at 400, while SPX, /ES, and /MES would have strikes at 4000).
While SPY is the simplest choice because it is most readily available, there are reasons to consider each of the other listed choices to best meet the needs of a specific account or strategy. From biggest to smallest, SPX controls 20 times as much capital as /MES, and the other choices provide increments in between. I was personally reluctant to trade futures options at first, but for no good reason other than I wasn’t familiar with their nuance. As I write this, I currently have at least one contract of each of these five choices open amongst the various accounts I manage.
For all of our choices, we currently have the ability to select expirations three days a week, and potentially five days a week in the near future. Each choice has an extensive selection of strikes available at each expiration, although one can expect Friday expirations and month end expirations to have more choices and more trading volume than Mondays and Wednesdays. We expect third Friday (monthly expirations) to have more choices and trading volume than any other expiration in the month.
My personal preference in most situations is SPX due to its large size. Even though commissions and fees are more on a per contract basis, the fact that SPX is 10 times bigger than SPY or XSP makes commissions and fees almost negligible in most trades of SPX, where they can be a substantial consideration with SPY and XSP in some strategies that deliver narrow profits. For futures, I like /ES over /MES for the same reasons. However, when I’m trying out a new strategy or working with a small account, I often have no choice but to use SPY, XSP, or /MES. For most new traders, SPY is the first and easiest choice, but eventually there may be a need to use another choice. For example, if you start trading 10 option contracts at a time, it might make sense to use SPX. If SPY is too big, you may want to get approval to trade futures and trade options on /MES. If you have a taxable account and are in a higher tax bracket, XSP may be a good alternative to SPY to reduce short term capital gains. So, learn the differences and make the choice that makes the most sense for the situation.
If you want to investigate strategies for trading options on the S&P 500 index, take a look at some of my favorite strategies. You may also want to read my page on how different option strategies have very different risk profiles.
