We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

If the September effect causes a stock market crash, here’s what I’d buy

Jon Smith explains what the September effect is and flags up what he’d do if it led to a stock market crash this month.

| More on:
Senior couple are walking their dog through a public park in Autumn.

Image source: Getty Images

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

Some investors are flagging up the so-called September effect, which is a theory that suggests the stock market performs the worst during this month.

Even though it’s up for debate, the FTSE 100 hasn’t had a good start to the new month. Should we get some catalysts in coming weeks that trigger a stock market crash, here’s what I’ve got on my watchlist to snap up.

XXX

Details of the September effect

A data study using monthly data from the S&P 500 from 1944 showed that there are only two months during the year that have a negative average stock market return. One’s February, with an average return of -0.01% (basically nothing). The other’s September, which has an average return of -0.51%.

Although that may spook some people, let’s consider something else. Data shows that over the past century, the S&P 500’s fallen in September 55% of the time. So really it’s basically a coin flip of being positive or negative. The difference is that when it falls, it drops more than when it rallies, hence the skew of an average loss for the month.

The bad start to this month for both the S&P 500 and the FTSE 100 comes after poor economic data from the US. The concern is that it could be heading into a recession, with sharp interest rate cuts needed quickly. Given that FTSE 100 companies are international in nature, what happens in the US also impacts the UK stocks too.

Should the US Federal Reserve meeting next week cause more worry for traders, it could trigger an even steeper market drop.

What I’d snap up

Even though the above scenario isn’t my base case, I’m prepared in case it happens. One stock I’m watching is British American Tobacco (LSE:BATS). The share price is currently at 52-week highs, up 14% over the past year.

While the half-year results showed revenue down by 8.2% versus H1 2023, there’s continued optimism around the push for a smokeless society. This grows revenue for the New Products division, housing things such as vapes. The CEO noted that during H1 “we added 1.4 million consumers to our Smokeless brands, now accounting for 17.9% of Group revenue, an increase of 1.4% versus 2023”.

I think this will enable the company to be profitable in the long term, even with traditional combustible revenue shrinking. One risk is that combustible revenue falls faster than expected. This could see profits drop and surprise investors.

Given the stock’s at a high level right now, a crash would allow me to purchase at a better price. Even if a crash is triggered by recession fears, I’m not too concerned for the firm. After all, smoking’s historically proven to be habit that people spend on even during tough times. Although the addictive nature isn’t something to be proud of, it does mean that revenue’s steady throughout the economic cycle. This should support the share price over the long run.

Jon Smith has no position in any of the shares mentioned. The Motley Fool UK has recommended British American Tobacco P.l.c. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing For Beginners

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »

British flag, Big Ben, Houses of Parliament and British flag composition
Investing Articles

£20,000 invested in a Stocks and Shares ISA on 1 January is now worth…

A Stocks and Shares ISA invested in the FTSE 100 on 1 January is already up. But some investors have…

Read more »

Silhouette of a bull standing on top of a landscape with the sun setting behind it
Investing Articles

3 FTSE Shares experts think will lead the next bull market charge

Some 63% of all analyst ratings on FTSE shares are currently set to Buy. Here are three stocks the experts…

Read more »

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

How much do you need to put in the stock market to quit work for a life of passive income?

Could the stock market really replace your salary? Here's how much money you need, and one quality FTSE 100 compounder…

Read more »

Storytelling image of a multiethnic senior couple in love - Elderly married couple dating outdoors, love emotions and feelings
Investing Articles

How much do you need in an ISA for a £692 weekly passive income?

A spread of FTSE 100 stocks could help ISA investors generate a passive income worth £30,000 over a full year.…

Read more »