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Weekend reading: Normal returns in the stock market aren’t normal

Some good reads from around the web.

When people discover my interest in investing, they usually express mock  horror, and ask me why the past few years of turmoil hasn’t caused me to find a new hobby and/or stash my cash under the mattress [1].

Partly because the last few years has been a great time to make money in the stock market, I reply.

That usually gives them pause.

Am I special? Not really. According to Morningstar, an investor in the FTSE All-Share index reinvesting dividends via this HSBC tracker [2] would have enjoyed an annualised return of 13% over the past three years. That’s good enough to turn £1,000 into £1,444.

Of course, not all periods in the stock market are so fruitful. Over five years the annual return from the tracker is a big fat zero. Over ten years it improves to 5.47% per year, thanks to dividends.

But the past 3-4 years are definitely not a reason for concern.

What’s more, whereas some friends are horrified when they learn I’ve been regularly putting money into a market they believe has gone nowhere for a decade, I’m more horrified that they’re haven’t.

What is an average year, anyway?

Of course, I understand why they’re worried about my sanity. The financial news and the mainstream media are synonymous nowadays, with even the humblest BBC update not shy of mentioning a sharp fall in the indices.

I hear Robert Peston is so aggrieved, he’ll no longer get out of bed for less than 5% off the Dow.

Yet the volatility of recent years is not unusual – a point well made by Canadian Couch Potato [3] this week:

You may be shocked to learn that a portfolio with equal amounts of Canadian, US and international stocks would have posted returns between 6% and 11% exactly five times in the last 42 years.

Think about that: in any given year, the chance that stock returns will be within this “normal” range was less than one in eight.

Now let’s consider the probability of more “abnormal” outcomes. If the average long-term return for stocks is 8.5%, let’s look at years where returns were a full 10 percentage points more or less than that.

It turns out that there were 11 years with losses of at least –1.5%, and 17 others with gains of at least 18.5%. In other words, the probability of a significant loss or a huge gain was 67%, or two years out of every three.

I don’t have the UK statistics to hand, but I am certain they are very similar.

Everyone who wants to succeed as an investor needs to get used to them.

From the money blogs

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