How Common Are New Market Highs?

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With the U.S. stock market hitting all-time highs, a question you may be asking yourself is, how should I be feeling about that? Phrased another way, how common are market highs? Are they extremely rare and should I be panicking or are they pretty much par for the course?

To try and answer these questions we must put market highs into historical context.

The Eye Test

The chart below illustrates the growth of $1 invested in U.S. large cap stocks on January 1, 1926. At the end of September 2018, after factoring in the reinvestment of dividends, $1 was worth $8,129!

Data Source: Morningstar. Based on month-end values with dividend reinvestment.

Looking at this chart, you would think that the markets are hitting new highsi pretty much all the time! Unfortunately, this chart obscures a less rosy reality.

The stats

Over the almost 93-year history set out in the chart, U.S. large cap stocks experienced 119 periods where a drawdown occurred (i.e. where the value fell below its prior peak as measured at month-end). And although the average drawdown was -6.8%, there were eight time periods where the decline was greater than -20%. As you would expect, the largest of all the declines was the 83% plummet in the Great Depression followed by the 51% drop during the 2008-09 Financial Crisis.