Worried about a stock market crash? Here’s how I would position my ISA

Don’t panic-sell everything, but look to diversify if you’re worried about a crash, says Jonathan Smith.

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.

When investing, your capital is at risk. The value of your investments can go down as well as up and you may get back less than you put in.

Read More

The content of this article is provided for information purposes only and is not intended to be, nor does it constitute, any form of personal advice. Investments in a currency other than sterling are exposed to currency exchange risk. Currency exchange rates are constantly changing, which may affect the value of the investment in sterling terms. You could lose money in sterling even if the stock price rises in the currency of origin. Stocks listed on overseas exchanges may be subject to additional dealing and exchange rate charges, and may have other tax implications, and may not provide the same, or any, regulatory protection as in the UK.

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.

The time is fast approaching when we will all be sat around the dining table discussing various topics during the holiday season. Will whoever is Prime Minister be any good? Will the FTSE 100 crash? Did Mrs Smith burn the gravy?

While we can’t say for certain the answer to those questions (apart from question three — it’s always a no) there’s definite merit in playing out different scenarios depending on your point of view. 

For this article, I assume you’re reading on because you are indeed worried about the potential for a stock market crash. But what exactly is a ‘crash’? That’s a fairly general term, but specifically we could term it as a fall of 20% or greater in the value of the FTSE 100 index over a short period of time. And what can we do about it?

The great unknown

First, it must be said that trying to predict the exact timing of a market crash is impossible. It’s such an unknown that it continues to outsmart even the most intelligent analysts in the City. If you simply sold all of your stocks and sat in cash, you could be waiting for months or even years before the market did indeed correct lower. 

This could mean that in the period in between, you could be giving up valuable gains. Therefore the first way I would position my portfolio is to resist the urge to sell everything. Quite the opposite, I would stay invested, so that I don’t have the opportunity cost of giving up potential gains.

When you do see the market starting to make a continued move lower (say, around 5%), then you can look to transition out of some stocks, but selling when the market is still stable is not wise, in my opinion.

Yet this doesn’t mean that we have to simply sit on our hands.

Diversify

Use the time now before any potential fall to adjust your portfolio so that it’s well diversified. For example, if you hold 10 stocks in your ISA, all of which are from the same industry within the FTSE 100, this isn’t diversified at all.

If we saw a crash led by this particular industry (think of the banking sector in 2008/09) then you could be overly exposed to depreciating share prices.

Therefore, I would suggest selling some stocks if you’re concentrated in a particular industry, and buy some well reported stocks that diversify your risk. Doing this across industries is a start. Also, look to diversify around the world. For example, HSBC is a truly global firm, with limited exposure to the UK economy. Therefore, if you’re worried about a UK-specific recession, buying into firms like HSBC could act as a buffer for you if a domestic recession happens.

Overall, no one can predict the exact timing of a stock market crash. Yet take this opportunity if you’re concerned to readjust your ISA holdings. In my opinion, don’t sell everything, but do look to diversify. And don’t forget — a crash could also mean some fundamentally strong companies trading at temporarily low valuations that could pay off come the recovery. Have your well-researched watchlist ready so you can take advantage of this.

Should you invest, the value of your investment may rise or fall and your capital is at risk. Before investing, your individual circumstances should be assessed. Consider taking independent financial advice.

Jonathan Smith has no positions in the firms mentioned. The Motley Fool UK has recommended HSBC Holdings. 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 Articles

Investing Articles

£9k of savings? Here’s how an investor could aim to turn it into a second income of £560 a month

Christopher Ruane digs into the theory and numbers of how an investor could target a chunky monthly second income of…

Read more »

Young woman working at modern office. Technical price graph and indicator, red and green candlestick chart and stock trading computer screen background.
Investing Articles

A top S&P 500 value share to consider as markets sell off!

Worried about the outlook for S&P 500 shares in the New Year? Buying value stocks like this tech giant is…

Read more »

Investing Articles

£20k of savings? Here’s how an investor could target £980 of passive income each month

With a £20k pot to deploy, our writer outlines how a long-term investor could target almost £1k a month in…

Read more »

Investing Articles

FTSE shares: a bargain way to start building wealth in 2025?

Christopher Ruane explains how, by buying FTSE 100 shares at what he thinks are bargain prices, he hopes to build…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

3 ISA mistakes to avoid in 2025

Our writer outlines a trio of mistakes investors can make in their ISA, to their cost, and explains why he’s…

Read more »

Older couple walking in park
Investing Articles

3 UK shares to consider as a long-term investment for retirement

Our writer identifies three UK shares with long-term growth potential he believes investors should think about holding until retirement and…

Read more »

Pink 3D image of the numbers '2025' growing in size
Investing Articles

Could this beaten-down FTSE 250 stock be on the cusp of a recovery in 2025?

After this FTSE 250 financial services stock lost another 24% of its value in 2024, Andrew Mackie sees the potential…

Read more »

The Milky Way at night, over Porthgwarra beach in Cornwall
Investing Articles

Warren Buffett says make passive income while sleeping! Here’s my plan to do so

Billionaire Warren Buffett has said many wise things over the past half a century, including a thing or two about…

Read more »