Recent Market Volatility

 WE SHOULD EXPECT VOLATILITY

JANUARY 2016

Do returns during January provide information about returns during the remainder of the year?Boat

As we would expect over any period, prices in January 2016 changed from day-to-day as aggregate expectations changed and investors processed new information. During the month, the S&P 500 Index had a return of −4.96%, the ninth lowest return for the index since 1926. The first two weeks of January was the worst start to the year for the S&P 500 in history, with the index returning −7.93% from January 4–15.

The market events of January 2016 provide an opportunity to examine several questions important to investors and revisit some fundamental principles of investing in capital markets.

Based on this information, some investors may wonder whether the returns in January have some predictive power for the returns during the remainder of the year. Exhibit 1 shows the returns of the S&P 500 Index for the month of January compared with the subsequent 11-month return (i.e., February through December). We find that a negative January was followed by a subsequent 11-month return that was positive 59% of the time, with an average return of 7%, indicating a negative January does not predict poor market returns for the rest of the year.

Recent Volatility chart 1

Recent Volatility chart 2

volatility chart 3One additional not: if we look at the five lowest January returns, excluding January 2016, the average return for the remainder of the year was 13.8% and none of these years finished in the lowest 20 years of annual returns for the S&P 500 Index.

PREVIOUS MARKET DECLINES
What have we seen during previous market declines?

As mentioned above, the YTD return for the S&P 500 through January 2016 was −4.96%. From the previous high on November 3, 2015 through its low on January 15, 2016, the S&P was down −10.43%, its second decline of at least 10% since the beginning of August 2015. We can look at the data in Exhibit 2 to see how the US market has performed in subsequent periods following different magnitudes of decline. The exhibit looks at previous times when the S&P Index has declined by 10% and 20%, and shows the subsequent one-, three-, and five-year return. Independent of the magnitude of decline, on average, the return of the S&P 500 over the periods referenced has been positive and greater than the long-term average of 10.02% in half of the time periods observed. The chart also provides information on developed ex US and emerging markets, where we have seen similar results.

VOLATILITY
Is the recent period abnormally volatile?

For the period January 1926 to the December 2015, the S&P 500 had a compound return of 10.02% and a standard deviation of 18.85. Looking over a more recent period, from January 2010 through December 2015, the return for the S&P 500 has been 12.98% with a standard deviation of 13.09. Comparing these results with other historical periods, we can see the recent period has not necessarily been more volatile. During the so-called “Lost Decade” from January 2000 to December 2009, the S&P 500 Index had a compound return of −0.95% and an annualized standard deviation of 16.13. When we continue to look at the data in Exhibit 3, grouped by decade starting in January 1930, we see periods of higher and lower returns as well as periods of greater and lesser volatility.

 

IMPORTANCE OF DISCIPLINE

While in the midst of a market downturn, we may be inclined to look for some type of signal as to what the recent period means for future returns or to assume the current period is somehow different from what we have observed historically. Before jumping to conclusions or attempting to make predictions about what the future may hold, analyzing the available data can provide perspective. It is also important to remember that there is ample evidence that suggests prices adjust in such a way that every day there is a positive expected return on our invested capital. While the realized return over any period may be positive or negative, in expectation we believe markets will go up. As investors, we should remain disciplined through all periods in order to capture the expected returns the market offers.

 

All Charts by Dimensional Funds

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