The Latest Look At The Total Return Roller Coaster

Note: We've updated the charts below based on monthly data through the Friday close.

Here's an interesting set of charts that will especially resonate with those of us who follow economic and market cycles.

Imagine that five years ago you invested $10,000 in the S&P 500. How much would it be worth today, with dividends reinvested but adjusted for inflation?

The purchasing power of your investment has increased to $19,550 for an annualized real return of 13.48%.

Had we posed the same question in March 2009, the answer would have been a depressing $5,521. The -5.93% real return would have cut the purchasing power of your initial investment nearly in half.

Fun Runs of the Roller Coaster

Let's increase the time frame to 10 years. The annualized return is considerably smaller. As of the end of last month, your $10K invested 10 years ago has grown to about $16.65K adjusted for inflation, an annualized real return of 5.11%.

Interestingly enough, the 15-year time frame is less profitable. Your one-and-a-half decade investment of $10K has grown to about $19.68K adjusted for inflation for a more modest annualized real return of 4.52%.

If we extend our investment horizon to 20 years, the roller coaster is less volatile with higher lows and lower highs.

The volatility decreases further with a 30-year timeline. But even for that three-decade investment, the annualized returns since the 1901 have ranged from less than 2% to over 11%.

As these charts illustrate, and as many households have discovered during the 21st century so far, investing in equities carries substantial risk. Households approaching retirement should understand this risk and make rational decisions about diversification. In the past we've suggested that they should also consider fixed income alternatives for that part of the nest egg that will pay non-discretionary expenses not covered by Social Security and pensions. Unfortunately this traditional wisdom has been less helpful in recent years owing to the Fed Zero Interest Rate Policy (ZIRP) and various stimulus strategies, which have collectively shrunk interest rates. With the end of ZRIP last December and the second Fed rate hike now in effect, it will be particularly interesting to see how this slow-motion roller coaster plays out in the years ahead.

Disclosure: None.

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