Knowing When It’s Time to Sell
by Michael Kahn
Most investment sites, courses and gurus offer all sorts of ways to find stocks to buy. Whether they are fundamental, technical or dart throwing, there is no shortage of experts telling you where to put your money.
In this article
- What Signals Are We Looking For?
- Watch the Trend
- Spotting the End of an Upward Run
- New Lows After a New High Is Not Reached
- Relative Performance and Fading Momentum
- Combine Charts and Fundamentals
The problem is that buying is only half the job. Unless you plan to leave your portfolio to your children, at some point it will be time to sell some stocks and turn paper profits into actual cash.
Aside from analyzing high valuations and dwindling business prospects, the market itself can be very forthcoming with clues on when to ring the register. By spotting changes in the price trend or even just changes from market-leading to market-lagging performance, individual investors can do just as well as the pros when it comes time to sell.
All that is needed is a chart with one or more of the readily available tools found on most free financial websites. The goal is to spot stocks that have stopped going up or are about to stop going up. To paraphrase humorist Will Rogers, “Buy stocks that go up; if they don’t go up, don’t buy them.” Our goal is to determine when the stocks we already own have moved into the latter half of that dictum.
What Signals Are We Looking For?
There are two reasons stocks stop going up. The first is that they are tired and need to rest. Perhaps price action got too far ahead of the fundamentals. The second is that the bull trend is about to end and a new bear trend is about to begin.
This article is not concerned with the first reason, as the focus is not to trade around any short-term wiggles. Any stock that is just resting before its next push higher is clearly good to own and can be separated from stocks that are resting before turning lower with the methods outlined here.
Rather, I am talking about stocks and not companies. Companies produce value, but stocks are supposed to reflect that value. As we know, value and stock price are rarely the same on any given day, and there is a whole industry built around finding stocks that are undervalued based on the fundamentals. But stock prices swing from theoretically undervalued to overvalued and back again. A good company with a good product may not have a good stock because the market has already priced the stock well above where the stock “should” be.
Typically, overvaluation comes from too much excitement over the “next big thing.” Stocks such as rare earth minerals miner Molycorp Inc. (MCP) in 2011 and Tesla Motors Inc. (TSLA) earlier this year come to mind. Apple Inc. (AAPL) also generated far too much enthusiasm given its sales and innovation pipeline just before it peaked in 2012, and countless investors wished they had some sort of method for spotting the pending bear market before it really got under way.
Watch the Trend
Charts do not tell us if a stock is fundamentally overvalued or undervalued. However, charts reflect the actions of all market participants, who each have their own view on valuation. It is the sum of their actions—buying, selling or doing nothing—that we use to make our determinations.
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Remember, charts are tools used to gauge what market participants are doing with their money. They do not predict the future any more than reading tea leaves or chicken entrails do. Charts do show when investors are behaving in a way similar to what they have done before, however. History shows what tends to happen next.
The simplest way to spot a stock that is tired and ready to pull back, if not reverse course altogether, is to measure the trend. Even without any gadgets or computer drawing ability, a trend can be eyeballed as the stock price moves from a low in the past to a high in the present. We want to know when the series of higher highs and higher lows—the natural ebb and flow of a stock—changes to a series of lower highs and lower lows. Netflix Inc. (NFLX) provided a great example in 2011, as Figure 1 shows.
If a straight line connecting the lows that looks like it follows the trend is drawn and prices move below that line, then we have our first indication that something has changed. When a stock moves below its most recent low, confirmation is given. All else being equal, the change in trend signals time to sell.
How do you know the difference between a correction and a true end of the road for a stock? There are no guarantees, but when the trend changes from up to down and prices make a lower low, the odds that it is more than just a bump in the road are rather good.
How do I know that? History is on my side. Even though outside actions in recent years, such as the Federal Reserve’s bond buying program (quantitative easing) made chart analysis more difficult, the principles still worked.
And they even worked ahead of non-market events such as scandals. In 1999, the chart of the now-defunct Enron yielded many clues near the top that something was not quite right. And just before the scandal broke wide open in 2000, the charts offered trend and technical pattern breaks to give investors a chance to save at least some of their holdings.
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Spotting the End of an Upward Run
In early 2012, Apple could do no wrong. Every time it looked as if the stock was starting to stumble, it quickly came back to life and soon outrageous upside targets were being published by respected analysts. But in October 2012, the stock made a rather significant move to the downside and a plethora of technical sell signals fired, as Figure 2 shows. Something was different, even from the last time the stock seemingly fell apart just a few months earlier in April 2012.
Figure 3 shows the price action. The first clue that the stock was cooling off occurred in May 2013, when it failed to make a new high. Behind the scenes, the relative performance chart, which is simply the ratio of General Mills to the S&P 500 index, broke down. The stock moved from market leader to market laggard, which, of course, is not a positive development.
Market pundits were quick to exclaim that money was leaving consumer staples and moving into more aggressive areas such as technology. They called it a healthy rotation in leadership.
Such rotation does not mean General Mills was about to fall. The stock could have continued higher, but at a slower pace. The outlook changed when shares of General Mills moved to a new one-month low and broke its 50-day average to the downside. Within three weeks, the stock gave back nearly half of its gains to date and left investors scratching their heads. After all, the S&P 500 was still about 4% below all-time highs. Clearly, General Mills’ generous dividend yield and relatively stable business (consumer staples) was not enough to protect investors from losses.
Relative Performance and Fading Momentum
Relative performance and relative strength charts are very simple tools that can tell investors when a stock or sector is moving into and out of favor. I wrote about this in more detail in the June 2011 AAII Journal (“Picking the Right Stocks Using Charts”).
Spotting these shorter-term tops allows more active investors to outperform the market, but for most investors spotting “the big one” is far more important. How can you determine if the market is about to form a major top such as the one seen in 2007?
The principles are the same: Look for fading momentum, more urgent sell-offs and failed attempts to recover. Let’s look at Figure 4, which shows the performance of the S&P 500, and this will become clear.