Large Gaps Up After The Market Has Already Risen
The S&P futures are up over 2% as I type. Last week I took a look at large gaps higher since September 2008. Generally the result was the larger the gap up the better the market performed that day.
Not all gap formations are equal, though. It can also be important to consider the state of the market prior to the gap. When the market is already extended up the chances of a reversal down are much higher. One simple way to define an “extended” market would be to say if it has closed higher the last 2 days it is extended. Now let’s look at some test results. All tests were run on the SPY over the last 10 years. Results are based on $100,000 per trade.
The 1st study looks at buying at 1 minute past the open on a day where the SPY gapped up 1% and selling at the 4pm market close. In these cases the SPY had NOT risen the last 2 days in a row:

As you can see the results are clearly bullish. Over 2/3 of the trades were profitable and winners were about the same size as the losers.
Results are flipped here as we now have over 2/3 of the trades as losers. Again winners and losers are about the same size. The solid bullish tendency has switched to solidly bearish.
For those interested below are all of the instances of the 2nd (bearish) test.
Good Days With Bad Finishes
Finishes like Tuesday’s often feel bearish to many traders. They interpret the inability of the market to hold on to its gains as a potential negative. In actuality, while the market may struggle over the next 1-2 days, over the course of the next 1-2 weeks implications appear bullish.
Below is a table showing the result of buying any time the S&P closes over 1% below its high for the day but still positive by at least 1%:
Between 5 an 9 days out you’ll notice some strongly bullish results. Not visible in the above table is that 19 of 24 instances (79%) posted a close higher than the trigger day within 3 days. Looking out 6 days that number increases to 23 of 24 instances (96%).
Intermediate-term Consequences Of A 30’s-Like Market
I don’t normally reprint large sections of the Subscriber Letter on the blog but I’ve received several inquiries about the longer-term and I figured, “What the heck.” Below is from this week’s intermediate-term outlook:
The question that I keep hearing over and over is “Is this rally for real?” What needs to be considered when formulating an answer is what constitutes a “real” bull move. It is my contention that the current environment most resembles that of the 30’s from a trading standpoint. Certainly the kind of damage that has been done to the market has not occurred since at least that time period. Additionally, volatility levels reached during the course of this bear have reached levels not seen since at least the 30’s in some cases.
I’m of the belief that the market is likely to trade in a very wide range over the next few years. It is unlikely to begin a new secular bull market during this time. Rather I believe we are likely to see both bull and bear runs occur. Some of these, such as the October and November rallies, may be too quick for most traders to capture significant portions of. Others may last several months before reversing course in a convincing manner. Below I’ve again pulled up some charts from the 30’s. In this case I’ve overlayed the zig-zag indicator in light blue.
What the zig-zag does is identify all moves of at least 15% either up or down from close to close. You’ll notice there were a substantial number of these moves during that time:
Late 1929 – late 1934. (created with Tradestation)
Lots of sharp sizable moves can be seen during the period. The 1932 low seen here is “the” low.

Several bull and bear markets could also be identified here.
So is it for real? Well, I’m not at all convinced that we’re looking at a 1942 bottom at this point. My contention is we are likely years away from that. The moves seen between 1929 and 1941 offered plenty of opportunity, though. I expect the next several years of this market will as well. Traders need not worry whether we are in a bull or bear market. Leave that to the media and instead just focus on the likely direction based on the evidence for the next few days, weeks or perhaps months. Remain nimble in your assessment as conditions may change rapidly. Whether the “ultimate” bottom gets hit is irrelevant. The ultimate bottom in the charts above was made in 1932. Close to 10 years passed before the next great bull market emerged. Picking that 1932 ultimate bottom and riding the wave higher was not the key to big profits. Much more important than picking the bottom would have been to stay nimble and take advantage of some of the vast directional opportunities over the next 10 years – prior to the “real” bull emerging.
A few quick notes pre-open
Well, I was going to post a study suggesting more downside along the lines of this one. With the futures down close to 2% that seems unnecessary. Therefore readers may rather check out the “2% Gaps Down” table from a while back.
It should be noted that since that study there have been 3 more instances – 2/17, 2/27, and 3/5. (I personally did not consider the 2/17 one valid because it came after a US holiday when the foreign markets were open for 2 days.) In every case the market continued lower that day, unlike many in the study. Also, the 3/5 instance was the only one of the 3 that managed a higher close in the next few days. I still consider a 2% gap open to have a short-term bullish influence, though. The 2/27 instance is really only the 2nd true maverick, along with 10/6/2008, among the bunch.
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Two Strong Up Days Under The 200 Revisted
For the 2nd day in a row the market finished up strongly on Thursday. Over a year ago on the blog I posted a simple study that looked at S&P performance following two consecutive days where it rose at least 0.75% and closed below the 200ma. At the time the 0.75% hurdle was a good sized 1-day move. In the last year a move of that magnitude hasn’t been significant. Still, I thought it would be interesting to go back and run the results again using the same parameters.
The fact that the 0.75% hurdle has become easier to achieve hasn’t weakened the bearish influence of the setup. I attribute a large part of reason for this to be the exceptionally choppy environment the market has been in over the time period.
Should The 2% Gap Study Be Adjusted For Volatility?
On Tuesday I posted a study that looked at 2% gaps in the SPY and what the response has been following such a large gap. Afterwards I received an email from a reader who posed the following question:
Rob… a thought on gaps. Perhaps they should be measured in terms of recent ATR volatility rather than an absolute amount like 2%. A 2% gap when ATR_20 is 2% would seem to mean something different than when ATR_20 is 1%.
It’s a good point, and one that has been raised before, so I thought I’d share my answer with you.
The reason I’ve stuck with the absolute number so far is twofold: 1) If you look at the times when the 2% gaps occurred they were all during relatively volatile periods. This somewhat reduces the need to filter by ATR. 2) If I use ATR as the criteria INSTEAD of an absolute 2%, then I will also get a number of gaps that are much smaller included in the study. Is a 1% gap in a non-volatile period the same as a 2% gap in a volatile period? Perhaps from a psychological standpoint it is similar, but if you’re using it to project returns going forward then I’d say it is much different.
Perhaps the best solution would be “2% AND at least an ATR of X”. With only 32 instances to start with I hate to filter too much though.
Unfortunately, I don’t think there is a right way to do it. Hence the reason I typically try and test multiple ideas and take into account not only price movement, but relative volume, breadth and sentiment as well. You get enough things saying “buy” or “sell” and you’ve got a decent chance of being right.
Is There Still A Tendency For 2% Gaps Up To Pull Back In The Next Few Days?
Below is a table that first appeared on the blog last fall. It shows how long it took for the SPY to close below the open of an extra large (2%) gap higher.
What was once a very strong tendency now appears to have lost much of its edge as four of the last nine 2% Up Gaps have failed to post a close below the gap open within the next week. What’s interesting about the “failures” is that they all occurred either 1 or 2 days after the market had closed at a 200-day low. In fact, the only one that was 2 days after was Monday 11/24/08, which was the day after the 11/21/08 occurrence that also didn’t pull back. Monday the market was far removed from its 200 day low. Of course SPY would need quite a pullback if it were to close below Monday’s open anytime in the next few days.
Large Gaps Up Since September 2008
Last year I did some studies on the blog that looked at how the market reacted to different morning gap sizes. I defined a “large gap” as anything greater than 0.75%. Since early fall that hasn’t even been an average size gap. As I’m writing this in the morning the futures are up almost 3%. Below are the results of a test that looked to buy just after a large gap up and then sell at the end of the day. They are run for varying gap sizes going back to September 2008.
Large gaps higher in downtrends have historically shown a propensity to squeeze shorts and continue higher over the course of the trading day. This propensity has continued to exist over the last 6 months or so while the market has been especially “gappy”.
A 20% Rally In Under 2 Weeks
While the Dow hasn’t managed a 20% gain yet I did use it to look back to 1919. There was only one other period where there was a cluster of multiple rallies of 20% or more in 10 days or under. That period was 1931-1933. Below is a chart of the period. I’ve noted every 20% 10-day rise with a buy signal. The sell signal occurs 20 days later so you can more easily see how it performed after the rise.
When The S&P Is Overbought Going In To A Fed Day
Wednesday is an FOMC meeting. In the past I’ve produced numerous studies examining how the market has performed surrounding these meetings. One scenario I have not yet shown is how the market has performed when it is short-term overbought go into the meeting. For this test I used a 2-day RSI to measure different levels of overbought.
Over the last 19 years when the market has had positive momentum going into a meeting it has most often been able to maintain that momentum through the day of the announcement.
When SPY Gaps Up 1% And Closes Negative
What stood out to me about Monday was the fact that the market gapped higher by such a large amount and failed to close positive on the day. Below I look at other times the SPY gapped up 1% and finished negative.
While instances are a bit low, additional downside follow through was often seen over the next 1-3 days.
Tweetdeck for Traders
Twitter has been increasing in popularity as an application for bloggers.
Dr. Steenbarger of Traderfeed produces invaluable information for traders through Twitter. He supplies followers with not only links, but proprietary indicator updates and real-time analysis and observations.
Jeff Pietsch from Market Rewind also sends out real-time market observations on Twitter.
Personally I’ve subscribed to both services via Twitter, and Dr. Steenbarger’s Twitter service through the RSS feed. The frustration I’ve experienced in following them is that even with an RSS feed the Twitter update may not arrive for an hour or so. And even then I’ll only notice it if I happen to flip over to my reader application. Trying to follow real-time commentary on a much delayed basis just doesn’t provide the same value. This is no fault of theirs as the information is good and timely.
This all changed recently. Why?
I discovered Tweetdeck. Tweetdeck is a free beta application that updates and organizes Twitter feeds that you are subscribed to. It updates once per minute and can be set to notify with a tweet sound and popup when a new tweet arrives. It makes manually refreshing Twitter or subscribing to an RSS feed obsolete. I’d strongly recommend everybody check out the free twitter services from Dr. Steenbarger and Market Rewind. And with Tweetdeck you’ll have real-time insight from some terrific intraday traders.
If Twitter updates aren’t enough you should also note Market Rewind just started a chat feature accessible from his main page.
Other worthwhile Twitter feeds to follow are Corey at Afraid to Trade and Greenfaucet – though neither are quite as dependent on real-time up to the minute information.
I’m admittedly no expert on Twitter. I’ve never sent a tweet and have no plans to offer any such service. If anyone knows of other valuable tools or services that could be incorporated with Twitter I’d encourage you to post about them in the comments section.
Subscriber Letter Trade Results For February
As mentioned above, I don’t suggest position sizes. The primary reason for this is I’m not acting as a financial advisor. I don’t feel it is appropriate to suggest allocation sizes without understanding someone’s financial situation and risk tolerance. Even for my own trading I run different portfolios with different levels of aggressiveness. For instance, my most aggressive portfolio is my IRA. Here I may use options to sometimes get 400-500% leveraged. Other portfolios on the other hand normally take much more conservative stances and some rarely reach or exceed 100% exposure.
Detailed trade by trade results will appear in this weekend’s Subscriber Letter. If you haven’t checked out the gold membership area yet, then click here to sign up for a free trial (only a name and email address required). It’s not just trade ideas. It contains research far beyond the blog as well as members-only charts, systems (with code included), and custom indicators.



