3 ways to prepare for a stock market crash

A stock market crash at some point is inevitable, but stock markets could also rise in the meantime. Here’s how I’d aim to get the best results in both scenarios.

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.

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.

When times are good, it’s easy for an investor to forget the potential downside of share investing. Monday was a painful lesson and a mini reminder of what could happen in a stock market crash, only it would likely be much more damaging.

Given stock market corrections and crashes are unavoidable, here are three ways I’d prepare for the next one, whether it happens this year, next year or further in the future.

Keep some cash for a stock market crash

One of the key ways to prepare for any eventuality, including a stock market crash, is to keep some cash aside. As the saying goes: cash is king. However, keeping too much cash uninvested also limits the money that can be made if markets are rising before a slump or crash. Therefore, there’s an ‘opportunity cost’ to not investing cash.

This is why I’ll usually keep about 5%-10% of my portfolio as uninvested cash. That way I can pick up shares much more cheaply just after a crash. That would then power my gains in the almost inevitable post-crash recovery. By being mostly invested though and not holding too much cash, I can also have a portfolio of companies I want to be invested in. That should provide dividend income and capital growth. 

Invest in quality companies

Alongside having cash available to limit losses and deploy post-crash, one of the other ways to be in as strong a position as possible going into a crash is to invest in high-quality companies. What I think this means in practice is investing in shares that show high returns on capital employed, high margins, low debt and growing revenue. Any company that can combine these and also be in an industry with good growth prospects ought to come through any stock market crash.

The opposite is true of highly indebted companies with weak business models. It’s conceivable that another bad crash could, for example, sink a stock like Cineworld (at least in my opinion).

Have a diversified portfolio

The third aspect of preparing for a stock market crash is to have enough investment diversification. That cuts both ways though, because I don’t want to be over-diversified as research shows this can limit gains and I’d be better off probably just buying an index tracker.

Diversification is best achieved by investing in different industries and across geographies so the country risk is minimised. Good diversification is about holding a portfolio of stocks that aren’t all very similar in terms of market cap, valuation, industry they operate in and countries they’re based in or sell in. A well constructed portfolio of high-quality stocks should weather a stock market crash better than a less diversified mix of stocks.

My portfolio already follows these rules and I think it means I can make money when stock markets rise, but also limit my losses and then pick up shares more cheaply when there’s a stock market crash.

Andy Ross owns no share mentioned. The Motley Fool UK has no position in any of the shares mentioned. 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

Ice cube tray filled with ice cubes and three loose ice cubes against dark wood.
Investing Articles

Recently released: December’s lower-risk, higher-yield Share Advisor recommendation [PREMIUM PICKS]

Ice ideas will usually offer a steadier flow of income and is likely to be a slower-moving but more stable…

Read more »

Sunrise over Earth
Investing Articles

Meet the ex-penny share up 109% that has topped Rolls-Royce and Nvidia in 2025

The share price of this investment trust has gone from pennies to above £1 over the past couple of years.…

Read more »

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

1 of the FTSE 100’s most reliable dividend stocks for me to buy now?

With most dividend stocks with 6.5% yields, there's a problem with the underlying business. But LondonMetric Property is a rare…

Read more »

Investing Articles

Is 2026 the year to consider buying oil stocks?

The time to buy cyclical stocks is when they're out of fashion with investors. And that looks to be the…

Read more »

ISA coins
Investing Articles

3 reasons I’m skipping a Cash ISA in 2026

Putting money into a Cash ISA can feel safe. But in 2026 and beyond, that comfort could come at a…

Read more »

US Stock

I asked ChatGPT if the Tesla share price could outperform Nvidia in 2026, with this result!

Jon Smith considers the performance of the Tesla share price against Nvidia stock and compares his view for next year…

Read more »

Investing Articles

Greggs: is this FTSE 250 stock about to crash again in 2026?

After this FTSE 250 stock crashed in 2025, our writer wonders if it will do the same in 2026. Or…

Read more »

Investing Articles

7%+ yields! Here are 3 major UK dividend share forecasts for 2026 and beyond

Mark Hartley checks forecasts and considers the long-term passive income potential of three of the UK's most popular dividend shares.

Read more »