Applying Options to Trading Systems - Buying Puts and Calls

by billb 30. May 2008 11:47

In part 1 of the series, I'll discuss the simplest of all option plays, going long a put or a call.  I'll outline the advantages and disadvantages of this simple strategy.

As I mentioned in the Introduction of Options Into Trading Systems article, the use of options in a trading system brings about some new dimensions to consider or at least be aware of.  The two biggest, in my opinion are theta and vega.  Briefly, theta is the amount an option decays over time with all other variables being equal.  To an option buyer, theta is a loss, to an option seller, theta is a gain.  Vega is the value of implied volatility.  An increase in vega increases the price of the option and conversely, a decrease in vega decreases the price of the option.  Stocks or underlying assets with more volatility (think tech stocks vs. blue chips) will have a higher vega and trade at a higher amount to a lower volatility asset.  Keep in mind, I've just given the most rudimentary explanation of a fairly complicated topic.  I highly encourage you to understand how these and the other greeks work before trading options.
 
When we're long a put or a call we have theta working against us.  Time is not on our side.  So the first thing to consider is the average holding time for a position within our system.  Obviously this is paramount because if our hold time is a day or two, theta decay is really of little consequence (but vega may be a big deal, more on that later).  Once you begin holding for more than a week or so, theta begins to chew away at your profit.  It could very easily turn a winning system into a loser.  The second item to be aware of with regard to theta decay is profit targets.  A system with a relatively low profit target could have that profit eaten away very quickly by both theta decay and/or the bid/ask spread.  It is important to take note of your profit target value and your average profit figure to determine if theta would've chewed that away and left you with a loser.
 
Vega risk is the next topic to consider.  When you're buying an option, you're long vega.  You profit if vega rises, you lose if vega falls.  From day to day, vega can stay within a reasonable range.  But like anything else, there are clear exceptions to this rule.  Vega can move and move fast for no real reason.  However, one known place that vega moves is during earnings.  Most often stock holders will hedge their positions into earnings to protect some gains without selling their stock.  In addition, those speculating about the earnings reports may put on directional plays.  After the earnings reports, the underlying will typically experience what is known as "vol crush" where vega implodes.  When purchasing an option, it never hurts to check out a volatility chart (IV chart).  One of the better websites for this is ivolatility.com.  It may be foolish to speculate on volatility as a rule, but buying when IV is very high is a loser far more often than it is a winner.
 
Now that we've discussed some of the potential pitfalls, let's move on to some of the advantages of this option strategy.
 
One huge advantage that option buyers have is what some might call an "embedded put".  Being long a call means you have limited your loss to the amount of premium paid for the option.  While this is discussed in Options 101, it bears repeating for trading systems because so many trading system developers stress money management and limiting losses.  If you've developed trading systems for any length of time, you're fully aware of how a stop loss will really eat into your profits.  However, without a stop loss you open yourself up to being wiped out.  Being long a call or a put allows you to have clearly defined risk before entering any trade.  This is undoubtedly a huge burden off of your shoulders.
 
Straight forward calculations and unlimited profit potential.  Coming up, I'll be discussing some more complicated strategies to change the risk profile.  This adds complication to the whole process.  With straight put and call buying, there are much fewer complications.  Also, your profit potential is  theoretically unlimited.  I don't believe in stocks going to the moon or to 0 very often, but with straight long positions, you do not cap your profit as you may with spread strategies.
 
On the next go, we'll look into ways to mitigate theta and vega risk.

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Gas Prices Topping?

by billb 29. May 2008 13:51

One of the "theories" you've probably come across in the stock market is that when something becomes front page news in your local paper that the trend is about to change.  When the Dow or Nasdaq is above the fold, it might be time to consider going against the news.  Likewise, when the topic of discussion at family gatherings or with your cab driver is the market, it's time to do the opposite of what they say.  I recently went out of town to visit family.  The thing that really grew tiring was the moaning about the gas prices.  Prices have been rising steadily for years, but this time the first question out of everyone's mouth was "how are the gas prices down by you".  I was caught off guard and didn't have the figure down to the penny.  What's more, the front page of the local newspaper had the now commonplace photos of the gas sign on Any Street USA with proverbial "Gas Pains" or "Crude Reality" type headline.  Certainly they've written software to churn out these articles about soaring commodities because they all have the same flow.

The point here is that if the old theory holds up, gas prices should be topping.  I say this half joking, but this media coverage and general belly aching has reached a fever pitch.  The old theory will hold up when it does.  With so many top pickers on the air every day, someone will call the top (by luck) and tell you all about how they looked into their crystal ball and knew the magic number.
To counter my point though, CNBC has an article from last night posted here which talks of the impending correction.  He cautiously points out that the correction may not be big and few expect prices to go below $100 per barrel.

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General

Commodity ETF and ETN Reference

by billb 28. May 2008 14:07

A comprehensive article on the ETFs and ETNs being offered to date.  It also explains the difference between ETFs and ETNs.  I mention them quite frequently, so if you do not know the difference, I highly recommend you take the crash course.

http://seekingalpha.com/article/30369-commodity-etfs-and-etns

 

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Gone Fishin'

by billb 22. May 2008 13:55

Detroit Rock City

Going out of town for a little holiday over the next few days.  I will be mostly incommunicado.  This is a trip to visit family up in Detroit, so there will be no rest and relaxation and little time to write.

I would like to leave this week with a few thoughts about where the market is.  The few hundred point shaving over the last couple of days isn't really all that surprising.  The major averages have been hovering towards the top end of their ranges for weeks now.  It was going to be time for a blast off to the upside or some mean reversion.  Being a mean reversion kind of guy, I expected (but did NOT predict) the latter.

Losing 400+ points puts us at the lower end of the short term range and close to the middle of the medium term range.  If she goes much lower, I'll be looking to add to the long side.

The selling over the last couple of days has not been accompanied by volume.  This can be sliced both ways (and you'll probably see it done).  Without volume, it means the move is lacking committment.  This means that the bulls are still in control.  Obviously, the bull argument.  While the bears may say that the relatively low volume sell means that the sellers are not done selling.  You'll need to see some "capitulation".  Also, I think many bulls are seeing this little run up to 13K as a feel good rally in a bear market.  As long as that's the prevailing attitude, I expect us to stay around 12-13K for a little while.

But hey, what do I know?  You should plan accordingly regardless of where the market is and be positioned according to your plan either way it heads.

Enjoy your holiday weekend!

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Options on Gold ETF GLD

by billb 21. May 2008 11:37

One of the most successful ETF products to date is the gold ETF by streetTracks (GLD).  What makes this ETF fairly popular is direct access to the underlying.  Gold bars are held in vaults, not futures contracts.  This has proven that the price of the ETF tracks the underlying pretty well.

As the popularity of this ETF grew and grew fast, the question asked by option traders, is why we don't have options on GLD.  The reasons have varied from not enough volume (clearly wrong) to that the level of derivation was too much (again, wrong).  Apparently the market has spoken and the options are on their way.  If all of the hurdles are properly cleared the CBOE could list these options as early as the end of this month.

I'm not a gold lover.  An asset that seems to create nothing but volatility or at best, counterbalances volatility in your portfolio without actually creating real returns over time is not really for me.  However, I really like the idea of being able to play gold speculatively.  If the volume on the options is anything like the volume on the ETF, we could find ourselves with another liquid option set and that's always good news!

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CANSLIM in Practice - CSSGX Study

by billb 20. May 2008 11:19

If you've invested or traded for any length of time, you have probably picked up an Investor's Business Daily once or twice.  It's a good paper and I find the news and articles very interesting.  The news of the day is really only half of the paper though.  The other half is dedicated to finding and analyzing stocks that match what is referred to as CANSLIM.  CANSLIM is an acronym for the criteria used to analyze stocks in the IBD.  Each week, IBD publishes a proprietary ranking known as the IBD 100 where the 100 best CANSLIM candidates are printed with charts and a brief analysis.  The thing that has always bothered me about CANSLIM is the subjective buying.  Apparently if something breaks out of a cup and handle, it's a buy.  Identifying this pattern has always been troublesome to me.  I've never traded CANSLIM for that reason.

But hey, you shouldn't have to worry too much about picking the precise entry point because the rest of CANSLIM has really identified a quality company that's going to be great for your long term holdings, right?  Not exactly.  As in previous comparisons, I truly enjoy taking on conventional wisdom with reality.  The reality piece being the price of the mutual fund or ETF that employs the conventional wisdom du jour.  In this case, we analyze the price action for CSSGX for the past two years.  We compare it against the S&P 500 benchmark.

(Click to enlarge)

In this timeframe, the underperformance has been pretty dramatic.  Did I also mention that for this performance you can expect to pay a hefty 1.7% fee?

According to this weekend's IBD, the IBD 100 performance since inception is +239.3%.  So what's the difference between a 5% return and a 239% return?  There could be a number of things at play.  Maybe the cup and handle yields impressive power.  If this is true, it holds more power and an more of an edge than any other chart pattern.  I'm skeptical.  Some more likely candidates are CSSGX doesn't necessarily invest in the same securities as those printed in the IBD 100, but the criteria should be similar, right?  Transaction costs may also be to blame.  Imagine if you had to buy and sell 100 securities a week.  Hard to make money with the commissions.

Whatever the case may be, if you're struggling with CANSLIM, you can plainly see that you're not alone.  Even the pros can't seem to get it quite right.

I will conclude by saying that I feel IBD is a great paper that is chock full of ideas.  It also preaches discipline and risk management which are extremely important concepts.  I would not follow the advice of the publication to the letter, but the concepts are dead on.

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New 3x ETFs Planned - Beware Tracking Error

by billb 19. May 2008 15:35

The headline from marketwatch.com reads Proposed funds up the ante to magnify stock market returns threefold.  So now it's party time because we're now going to average a return of about 30% per year given the conservative estimated 10% return per year on the S&P 500.  Before we go dancing in the streets, let's splash a cold dose of reality on this.  The fine print reads that they're attempting to mimic the move of the tracking index day to day, but returns over time may suffer tracking error.  Folks, tracking error is code for things won't add up and it certainly won't be in your favor.  When tracking error is discussed this is always referred to as returns less than that of the tracked index or basket.  Another misleading piece of the article is the reference to magnifying returns threefold.  Although returns are generally referred to in a positive context and risk is generally referred to in a negative context, let's focus on returns as both negative and positive.  So 3x returns also means 3x the losses.  Is this something you can deal with in your portfolio?

Let's have a look at how a simple 2x leverage fund stacks up against 1x ETFs.  This simple chart plots the QQQQ against its 2x leveraged product the QLD.

(click to enlarge)

Over the last two years, the leveraged ETF when simply held has created nothing but stomach churning.  And when the going got tough, the leveraged product got rough.  This product may be great for day trading and maybe swing trading, but buy and hold is clearly another story.  Based on this chart, you can probably devise a system for when the leveraged product deviates from the non-leveraged product to do a little pair trading or long one and/or short the other.  But that's also wild and speculative.  My point is that for a buy and hold investor, this doesn't make any sense.

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Option Volume Across Exchanges

by billb 18. May 2008 17:50

Based on my post from Friday and Pete's suggestion to Google (which I had done already at least 10 times), I decided to give it one more go.  It took about 30 minutes, but I finally found what I was looking in an obscure link from one of the exchange's web site.  The OCC provides volume data across all exchanges.  I wish it was aggregated, but either way, this will definitely save me some time!

Oh, and here's the link.  http://www.theocc.com/market/volume/volbyproduct_form.jsp

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Options

Introduction of Options Into Trading Systems

by billb 16. May 2008 17:49

My interest in trading systems grew in tandem with my interest for options.  At various points throughout the years, I've focused on one more than another, but I've always kept the two in my mind.  While developing trading systems, I'd keep in mind how options could be applied.  And the same goes for looking at option strategies and how they might be applied to trading systems.  Allow for two quick examples.  If one were developing a trading system for thinly traded stocks or penny stocks, there is likely no possibility that this could be used with options.  If one is studying 4+ leg option strategies, there is likely no possibility that this could be used within a trading system since fills and spreads would probably kill a lot of your trading system's edge.  The good news is, trading systems like options typically do better in a high liquidity environment.  If you're getting bad fills in either options or within your trading system, it's very likely that your backtested results are not going to be anywhere near your trading account results.

There are a number of criteria I use when filtering for option candidates within my trading system.  The two biggest are volume and whether or not they have penny spreads.  This is mostly a manual process, I'm afraid.  The CBOE web site contains a list of the highest option volumes from month to month.  That page can be found by clicking here.  This is a good starting point, however, my trading system parameters can also interfere with my option volume parameters.  A lot of my trading systems operate in a low volatility environment.  In other words, one of my watchlist screening techniques is to find stocks with relatively low beta.  So I have to take the list from CBOE and trim out the high volatility stocks.  The second problem here is that CBOE doesn't trade all of the options in the world.  My second and more arduous task is to take a list of high volume equities and manually lookup the option volume.  Fortunately, these usually don't take more than an evening or maybe weekend afternoon.  It would be nice if I had a list of high volume options from all of the exchanges.
 
The final and most crucial step is introducing the watchlist changes into my trading system.  My watchlist changes should feel more or less random to my trading system.  I'm not really basing the selections on performance, so it should have little change on my system's P/L.  However, I will run a number of tests against the old watchlist and compare it to the new watchlist to confirm or deny this.  If there are significant changes (i.e. my profit doubles over the same measured time between the new and old watchlist), I will attempt to isolate why.  I may or may not throw the symbol or symbols out all together, but the most important aspect here is that you understand why something is.  If I go ahead and put that solar energy stock into my watchlist with it's 400% gain in the last 2 years and then wonder why it drops 50% in a day, shame on me.
 
This is just an introduction and not a recommendation to begin using options in your trading systems.  There are a whole host of other complexities to be concerned with, especially with options.  The two biggest are theta and vega.  I'll get into these later.  I'll also discuss how to use various option strategies depending on the type of trading system you're developing.
 
Disclaimer: This is all my own opinion based on my experience.  I don't pretend these are the best ways and I certainly don't recommend you follow any of my advice.  These are meant to be points of discussion and idea sharing.

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Spotting Bogus Trades in Your Trading System

by billb 13. May 2008 14:34

Another lesson learned over the years is the effect bad data has on your testing results.  This can be somewhat mitigated by statements made in my previous post regarding mixing up your watchlist.  However, when reviewing your results you may notice some wildly profitable positions.  A clear signature of this is a windfall profit after a hold time of only one bar.  This is further established when you have a profit target and the position closes far above that target.  Typically in a trading system with profit targets based on daily data, your PT order will be submitted the next bar (day) after the system gets confirmation that the order was filled.  Of course, you can get a finer granularity of data and make this happen much quicker, but let's keep it simple because it can apply across the board.  Typically what happens is a rogue tick or just a plain wrong low/high print will trigger the backtesting engine to open a trade.  This will cause your position, when analyzed at the close, to show a massive, but erroneous profit.

It's a bit unrealistic to comb through all of the data and make sure that it's perfect, but you'll want to analyze your backtesting results and identify these trades.  If possible, remove them from your results by editing the data for that particular bar (assuming you don't know the proper high or low print).  What you do need to be aware of is bogus prints on current data.  The signature of this can be an unusual entry price.  What I mean by this is imagine a simple band violation system where all of a sudden the bands some to widen substantially.  This may be the result of some false increased volatility.  This will potentially throw off your algorithms and backtesting results will not match reality.
 
Finally, bogus trades with wildly incorrect profits seem to be more apparent in limit order based systems.  Again, typically due to the misprinted high or low.  A market order based system can cure some of this, but based on my previous statements, you're not 100% in the clear with market orders either.

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One Trade Per Symbol Trading System

by billb 9. May 2008 13:08

Most modern backtesting tools (RightEdge included, of course), have the ability to specify how many open positions you'll allow per symbol.  While testing my systems, I typically like to allow a single open position per symbol.  The reason for this is that multiple open positions per symbol can skew your results and exacerbate survivorship bias.  Most are familiar with the term survivorship bias, but if you're not, I'll explain very briefly.  A trading system is already "cheating" because it's taking symbols of companies that currently exist.  In other words, merely surviving as a company is a big assumption you've made in your system.  You add to that risk by allowing open orders to pile on top of open orders.  With survivorship bias, we already know that today the company is alive and (hopefully) doing well.  However, in your backtesting, more than likely you've bought more and more as the company shares were plummetting and then at some point the whole thing was rescued and you were rewarded handsomely for the risk assumed.  This is represented in your phenomenal backtesting results.  Your backtest does not understand this risk, but you should.

Note: I've tried to get the bank accept my backtesting profits as deposits and they won't.

Fast forward to today and you're going live with your shiny new trading system.  It's simple, yet brilliant, no doubt, and today it flags a trade for XYZ.  Your sound money management allows you to put up a meager 5% of your allocated system trading capital to this position.  Then tomorrow it hits again, 5% more.  This happens 10 times in total and now XYZ holds 50% of your system trading capital (hopefully this is nowhere near 50% of your TOTAL capital).  XYZ announces that they're filing for bankruptcy, never to return to its former glory.  50% of your capital is gone.  This isn't just drawdown that eventually comes back, this is gone as in your equity curve is demolished.
 
If your system is only showing a profit with more than one trade per symbol, you likely have some work to do on your system.  It's not realistic to assume that all of the companies on your watchlist are going to survive.  No matter how much you believe in them.  Also, if your system shows a much better profit when you allow multiple trades per symbol (but is still profitable regardless), keep in mind the risk you're incurring for this profit.  There is no free lunch.  If you want to assume this risk, I highly recommend lowering your capital per position the more times the trade is flagged.

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Platinum ETN Launching

by billb 8. May 2008 11:59

Platinum lovers in the United States will finally get what they've been asking for.  Tomorrow, a brand new (probably shiny) ETN will launch along with its short counterpart on the NYSE.  The ticker symbols are PTM for the long platinum and PTD for the short platinum.  These will be brought to you by UBS E-TRACS.  Non-U.S. traders have had a platinum ETF on the market for over a year.  All U.S. traders who wanted platinum exposure could only do so through futures contracts, until tomorrow.

No information has been posted to their site at the time of this writing.

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Developing Trading Systems

by billb 7. May 2008 11:30

I've been working on a new trading system.  Since we're hard at work on RightEdge during the day, day trading is not really an option with a real account.  I've always enjoyed trading on daily data because of the pace.  I can always go back and analyze the trade in progress.  My goals for this system are:

  • Relatively frequent trades.
  • Manageable drawdown
  • 1 position per symbol
  • Low exposure per symbol

A few things I've learned over the years is how deadly curve fitting can be.  I've discussed this in the past but would like to reiterate some of my ways for getting around this.  Naturally, trading systems are curve fitted to a certain degree, otherwise they would be random.  However, what I'm trying to avoid is tailoring the curve to my particular watch list and/or time period.  To avoid that, I change watchlists frequently while developing, testing and optimizing the system.  As you tweak parameters, you should begin to notice some normal distribution of results.  For example, let's take a profit target.  Let's say you set a profit target as an optimization parameter and the value is 1% to 10% with a step of 1.  You'll likely notice that your winning percentage will go down as your profit parameter goes up and your net profit will likely form a bell curve of sorts if plotted where the profit target is X and the net profit is Y.  Hopefully, this type of pattern repeats itself to a certain degree as you change your watchlist.  Oh yes, and don't just change your watchlist, change your timeframe as well!  If your system has 70% winners, for example, it should hang pretty close to that for any time period you test.  If it's a long only system, it will likely do better in bulls and worse in bears.  This is an inevitability.

One of the traps I fell into years ago was developing a system (usually an extreme system) and then finding a watchlist that looked good with my system.  This was a great way to lose money, and I did!

Testing Your Trading System

It probably sounds obvious, but backtesting your system is just the beginning of your testing process.  The second phase of testing is executing it in real time market conditions.  If you're relatively new to executing systems live, I highly recommend you sign up for an account that has simulated trading.  Enter your orders (or have RightEdge do it) to your broker and let them get filled in real time.  Follow your account with simulation for some time and see if the simulation picks up trades or fills that didn't really happen.  This will hopefully identify the degree of error in data.  If you see one of these, be concerned, if you see several, abandon ship.  The last phase of testing is running it in a live account with real money, however, use about 1/10th the size that you will when you go into production.  Let's say you are going to allocate $10,000 for a trading system and you'll allocate no more than 10% per trade in production, or $1,000.  For testing, I highly recommend doing 10% of that, so each trade would be $100.  You'll likely lose small money on the commission, but that's a small price to pay for validating your system with real money.

Back to my trading system, I'm in the second phase of testing at this point.  I'll be testing over the next couple of weeks or more in a simulated account and then moving over to real money if everything pans out.  I'll keep you posted.

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Increased Negative Deltas

by billb 2. May 2008 11:34
The short front month 44 QQQQ put only had 0.07 of premium left, so I closed it out.  The long put is bleeding, but this adjustment allows me to do two things.  One, get more momentum as I feel even stronger that a pull back is imminent.  Second, I can re-establish the short put and get a bit more premium if things start to move in my direction.  Oh ya, there's a third option, the market could continue to stay put or drift higher and the long put is a sure loser.  My risk is capped at 0.56 per spread.

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