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Time in the Market versus Timing the Market

Good things come to those who wait


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“We do not have, never have had and never will have an opinion about where the stock market, interest rates or business activity will be a year from now.” 

— Warren E. Buffett in his annual letter to shareholders February 28, 1989

The story of personal finance can be summarized in four words: Most wounds are self-inflicted.

One of the worst sins is trying to time the market. If there were no major and lasting consequences, we could simply categorize this behavior as folly. But since the penalties are permanent and can ruin a person’s financial well-being in retirement, we must label the behavior what it really is: deadly. Still, this behavior is pervasive and always will be — because we’re human.

On March 8, 2019, the bull market turned 10 years old, with the S&P 500 climbing more than 305 percent since hitting its financial crisis low on March 9, 2009. The index’s 500 total return over this period was 400.1 percent or an astonishing 17.5% per year. However, if you missed the 20 best percentage gain days over the 10-year bull run (i.e., 20 days in total, not 20 days per year), the annual gain was cut in half to 8.6 percent. Timing the market successfully is impossible because returns are often concentrated in very short time frames. If you aren’t invested in the market on its top days, you miss out and your returns are decimated.

Much has been written about this subject, yet it remains an abstraction even for experienced investors.  We’ll explore it from several angles in an attempt to simplify and enlighten.

Conceptual

Let’s start with the basics:  Since 1926, after adjusting for an annual inflation rate of about 3 percent, large-cap equities have delivered a 7 percent real return compared to 3 percent for bonds — more than double.

Why are stocks returns so much higher than bond returns? Because there is a perception that stocks are likely to incur infrequent but catastrophic “losses,” the market prices them to include a premium for that risk.

But volatility and risk are two totally different concepts. Think about volatility as short-term fluctuations, whereas risk is properly defined as the permanent loss of capital and/or purchasing power over time.

The catastrophic event in equities is a bear market, defined as a 20 percent decline from a peak stock index closing price. There have been 10 such events for the S&P 500 index since the end of World War II, or an average of about one every seven years, with an average and temporary decline of about 35 percent. But equities are a good investment because they go down temporarily and up permanently.

Numerical

The current bull run became the longest in U.S. history in the fall of 2018 (though, as of the 10-year bull market March 2019 milestone date, it still ranks third in terms of market returns). The record is the 417 percent growth from October 1990 to March 2000.

Of course, one could have only enjoyed those returns by being fully invested at all times. The rub is that it requires exceptional intestinal fortitude to ride out bear markets. In just the last two decades, there were two episodes when stock prices were cut in half: 2000 to2002 (minus 49 percent) and 2008 to 09 (minus 57 percent). There were plenty of reasons to panic in the 10 years since the March 9, 2009 S&P 500 low price of 677 — a level that was 75 percent below the 10-year anniversary closing price of 2,749.

Timing the market successfully is impossible because returns are often concentrated in very short time frames.  If you aren’t invested in the market on its top days, your long-term return returns will suffer enormously.

As noted earlier, during the 2,517 trading days over the entire 10-year bull period, the S&P 500 total return was 17.5 per year. Had you missed just the 10 best percentage gain days in this period (i.e., 10 days in total, not 10 days per year), your annual total return would have dropped to 12.1 percent. Missing just the top 20 days in the entire period would have cut the total annual return in half to 8.6 percent. And missing the top 50 days would have decreased the annual total return to a mere 0.7 percent. 

But the numbers in the chart are hypothetical, so let’s examine the real-world experience of actual mutual fund investors. Since 1994, DALBAR, Inc. has published an annual report that measures the effects of investor decisions to buy, sell and switch into and out of mutual funds over short and long-term time frames.

Over the 10 years through the end of 2017, the average equity mutual fund investor experienced an average return of 4.9 percent compared to the S&P 500’s 8.5 percent, while the average fixed-income investor experienced an average return of 0.5 percent compared to the Bloomberg Barclays Aggregate Bond Index annual return of 3.3 percent. So the average Joe invested in equities earned a return that was only slightly better than the bond index return.

Behavioral

In an ideal world, investors buy low and sell high. In the real world, investors do the exact opposite — buy high and sell low — especially during the most volatile times.

When stocks get pummeled, our reptilian brain (the oldest of the three human brain parts), triggers a primal “flee” instinct. We succumb to psychological traps, act irrationally, buy and sell at exactly the wrong times and then experience underperformance — or worse.

The evidence: Based on DALBAR data, the three months with the most acute investor underperformance since 1989 correspond precisely with the three periods of maximum pessimism and panic in the financial markets: the Great Financial Crisis of 2008 (minus 7.4 percent), the dot-com bust of 2000 (minus 6.1 percent) and Black Monday in 1987 (minus 5.3 percent).

Antidote

Countless experts have tried (and failed) to predict or time the markets. To capture 100 percent of the long-term return of equities, investors must be in the market at all times. This means experiencing 100 percent of the short-term volatility. In short, you must train your brain to think in terms of decades, not days. Time is the only effective antidote to volatility.

Despite the fact that most investors are planning for multi-decade retirement periods or even for multi-generational goals, they still check stock prices and their portfolios too frequently. How does that make any sense?

In short: It’s never about timing the market. It is always about time in the market.

Behavioral Takeaway

Anchoring is a cognitive bias that describes the human tendency to rely too heavily on the first piece of information offered when making decisions, such as daily stock price movements. To be a successful investor, you must begin by anchoring on the right time horizon: decades.

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