Interactive Investor

Should investors fear a September stockmarket slump?

5th September 2017 11:40

by Stephen Eckett from ii contributor

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September has historically been a poor month for investors. Since 1990, the average return from the FTSE All-Share index in September has been -1.2%, the worst return of any month in the year.

It's not all bad. Over the longer term, returns have been positive in September, while the market has only fallen in September in four of the past 13 years.

However, when the market does fall in September, the declines can be very large. The FTSE All-Share index has fallen by more than 8% during this month in three years since 2000 (see chart). The big problem for investors is volatility; share price volatility is at its highest in September.

The situation is most acute for mid-cap stocks. Since 1986 the FTSE 250 index has underperformed the FTSE 100 index by 0.7 percentage points in September – making September, along with October, one of the worst months for mid-cap stocks relative to large caps.

The market tends to drift lower for the first three weeks of September before rebounding slightly in the final week.

In contrast to equities, gold tends to perform strongly in September. Since 1968 the average return on gold in the month has been 1.8%, making September the strongest month of the year for gold.

Since 2000 the return has been even higher, at 2.3% on average. Silver also tends to do well in September.

We've already had the US non-farm payroll report this month, the closure of the New York Stock Exchange for Labour Day, and await a Monetary Policy Committee interest rate announcement (14th) and 'triple witching' (15th).

This article is for information and discussion purposes only and does not form a recommendation to invest or otherwise. The value of an investment may fall. The investments referred to in this article may not be suitable for all investors, and if in doubt, an investor should seek advice from a qualified investment adviser.

This article was originally published in our sister magazine Money Observer, which ceased publication in August 2020.

These articles are provided for information purposes only. Occasionally, an opinion about whether to buy or sell a specific investment may be provided by third parties. The content is not intended to be a personal recommendation to buy or sell any financial instrument or product, or to adopt any investment strategy as it is not provided based on an assessment of your investing knowledge and experience, your financial situation or your investment objectives. The value of your investments, and the income derived from them, may go down as well as up. You may not get back all the money that you invest. The investments referred to in this article may not be suitable for all investors, and if in doubt, an investor should seek advice from a qualified investment adviser.

Full performance can be found on the company or index summary page on the interactive investor website. Simply click on the company's or index name highlighted in the article.

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