My ISA is ready for a stock market crash

Our writer has been repositioning his portfolio lately in preparation for a possible stock market meltdown. Here’s his thinking.

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.

Tabletop model of a bear sat on desk in front of monitors showing stock charts

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.

I’ve recently been studying major stock market crashes throughout history. (Exciting, I know!) And one thing I was reminded of was just how much money can be made buying quality shares when widespread panic sets in.

To fully capitalise upon opportunities thrown up during a market crash, I’d need cash, of course. Preferably a fair bit of it. But my Stocks and Shares ISA cash balance led me to believe I’m somewhat underweight in this regard.

That is to say, I have some, but not enough.

Harvesting gains

Around this time each year, I take a good few hours to study my portfolio and make sure I’m happy with it. I revisit my investment thesis for each stock I own, making notes on whether I’m satisfied with its progress, sizing, valuation, and so on.

One conclusion I recently came to was that my long-term holding in taser-maker Axon Enterprise had become too large. This is a stock that has turned a $1,000 investment made 20 years ago into over $310,000 today!

Unfortunately, I haven’t held my shares that long. But they have risen now for eight straight years, so I’m up significantly. And it also means that this single holding recently ballooned to around 20% of my full portfolio value.

Now, like Warren Buffett, I’m a firm believer in letting my winners run. But I felt a bit of rebalancing was in order, especially as the stock had become very richly valued. So I trimmed my holding.

The result is that I now have much more money in my ISA than before, just sat there waiting for opportunities.

History lessons

The idea that a bell rings to signal when to get into or out of the stock market is simply not credible. After nearly fifty years in this business, I don’t know anybody who has done it successfully and consistently. I don’t even know anybody who knows anybody who has.

Jack Bogle

It’s rare a week goes by without some investor or economist predicting an imminent stock market crash. The causes of their envisioned market meltdowns range from rising interest rates to rising sea levels.

Yet they’re rarely accurate, and that’s why I generally don’t listen to the doom-mongers. However, I also know that stock market crashes are inevitable. So I always need to bear that in mind.

In the television documentary Becoming Warren Buffett, we see footage of the hallway leading to the Oracle of Omaha’s office. Hung up are framed front pages of newspapers reporting infamous stock market crashes throughout Wall Street history.

As Buffett explained: “I wanted to put on the walls days of extreme panic in Wall Street, just as a reminder that anything can happen in this world. I mean, it’s instructive art, you can call it“.

I find it instructive to remind myself that the US and UK stock markets have recovered from every crash that’s happened so far. So I know that history is on my side when I’m buying stocks during severe downturns.

Ultimately, I see big market drops as opportunities to exploit, rather than events to fear. And now I have my own war chest in my ISA waiting to be deployed when the time comes.

Ben McPoland has positions in Axon Enterprise. The Motley Fool UK has recommended Axon Enterprise. 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

Group of young friends toasting each other with beers in a pub
Investing Articles

FTSE 100 shares: has a once-a-decade chance to build wealth ended?

The FTSE 100 index has had a strong 2025. But that doesn't mean there might not still be some bargain…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

I asked ChatGPT for its top passive income ideas for 2026 and it said…

Stephen Wright is looking for passive income ideas for 2026. But can asking artificial intelligence for insights offer anything valuable?

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Here’s how a 10-share SIPP could combine both growth and income opportunities!

Juggling the prospects of growth and dividend income within one SIPP can take some effort. Our writer shares his thoughts…

Read more »

Tabletop model of a bear sat on desk in front of monitors showing stock charts
Investing Articles

The stock market might crash in 2026. Here’s why I’m not worried

When Michael Burry forecasts a crash, the stock market takes notice. But do long-term investors actually need to worry about…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

Is this FTSE 250 retailer set for a dramatic recovery in 2026?

FTSE 250 retailer WH Smith is moving on from the accounting issues that have weighed on it in 2025. But…

Read more »

Young Black woman using a debit card at an ATM to withdraw money
Investing Articles

I’m racing to buy dirt cheap income stocks before it’s too late

Income stocks are set to have a terrific year in 2026 with multiple tailwinds supporting dividend growth. Here's what Zaven…

Read more »

ISA Individual Savings Account
Investing Articles

Aiming for a £1k passive income? Here’s how much you’d need in an ISA

Mark Hartley does the maths to calculate how much an investor would need in an ISA when aiming for a…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

Is investing £5,000 enough to earn a £1,000 second income?

Want to start earning a second income in the stock market? Zaven Boyrazian breaks down how investors can aim to…

Read more »