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.

Get ready for a possible AI growth stock crash

Our Foolish author feels the AI-mania has signs of a bubble. Here is his plan of action in case an AI crash is indeed headed our way.

| More on:
Mother and Daughter Blowing Bubbles

Image source: Getty Images

You’re reading a free article with opinions that may differ from The Twelfth Magpie’s Premium Investing Services. Become a member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn more, and get a free 'Best Buy Now' stock!.

They’re calling it a bubble. They’re saying valuations in AI growth stocks are getting insane. They might have a point, too.

The S&P 500’s average price-to-earnings ratio has climbed to levels rarely seen in recorded history. Its Shiller P/E ratio (like a 10-year average) has climbed to levels rarely seen in recorded history. Its average price-to-sales ratio has climbed to… Well, you get the idea. 

Should you buy Berkshire Hathaway (A shares) shares today?

Before you decide, please take a moment to review this report first. Despite ongoing uncertainties from US tariffs to global conflicts, Mark Rogers and his team believe many UK shares still trade at substantial discounts, offering savvy investors plenty of potential opportunities to learn about.

That’s why this could be an ideal time to secure this valuable research – Mark’s analysts have scoured the markets to reveal 5 of his favourite long-term ‘Buys’. Please, don’t make any big decisions before seeing them.

On many metrics, the most comparable period in the stock market was the dot.com boom. An perfect memory isn’t required to recall that little episode didn’t end up being a great time for growth stocks. 

But this time is different, isn’t it? Fears of stretched valuations and crazy share prices are overblown, aren’t they? That’s because artificial intelligence is well on its way to supercharging profits and transforming the economy, isn’t it? 

Isn’t it…?

Alarming news

An MIT study released in recent days revealed an alarming bit of news. Of initiatives across companies to use AI to increase productivity or efficiency, 95% of them failed to make a return on investment. In other words, only one in 20 firms is using AI profitably. 

Those are crazy numbers, and it seems like the alarm bells are percolating to mainstream news outlets too. Here are a couple of headlines that caught my eye, all from the last four or five days as I write this:

The Guardian: “Is the AI bubble about to burst – and send the stock market into freefall?”

The Telegraph: “The warning signs the AI bubble is about to burst”

Forbes: “Is The AI Bubble Bursting? Lessons From The Dot-Com Era”

Personally, these worrying details have caused me to reallocate a portion of my portfolio into a 4%-returning Cash ISA. Not too much of my holdings in percentage terms, mind. If AI does end up bringing home the bacon, then I’m still well placed to benefit. 

But a risk-free 4% sounds attractive for the next year or two. And if the AI bubble does pop? Then I’ll have a chunk of dry powder to snap up stocks on the cheap. 

A different approach

I’m not the only investor keeping a tranche of their portfolio in cash either. Warren Buffett’s Berkshire Hathaway (NASDAQ: BRKA) has built up a $354bn cash position while whittling equities down to $272bn. The world’s most famous investor has taken a look at the markets and chosen to have more in cash than in stocks!

Berkshire has long been famous for its above-market returns, going back to the 1960s. Will this unprecedented building up of cash be yet another prescient move? Will Buffett and I come out laughing? No one can say for sure. And for potential investors of the $1trn market-cap conglomerate, the recent announcement that Buffett will leave his post by the end of the year is another risk to bear in mind. 

But for anyone looking to swerve the AI mania and take a value investing approach, all while outsourcing the nuts and bolts of portfolio selection, Berkshire Hathaway stock is one to consider.

John Fieldsend has no position in any of the shares 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

Investing Articles

Here’s why Babcock and BAE Systems shares got a Burnham boost today

New PM Andy Burnham has announced his cabinet and defence stocks are rising. But where have I got my money:…

Read more »

Investing Articles

3 under-the-radar UK growth shares that are quietly beating the S&P 500 in 2026

Our writer highlights three British growth shares that have made spectacular gains this year, while everyone was distracted by AI…

Read more »

Close-up image depicting a woman in her 70s taking British bank notes from her colourful leather wallet.
Investing Articles

Here’s the passive income 1,000 Greggs shares could deliver per year

This writer plans to hang onto his Greggs shares because he thinks they are undervalued. But he also likes the…

Read more »

A row of satellite radars at night
Investing Articles

This ex-penny stock has crushed Rolls-Royce shares over 5 years! Is there more to come?

With all eyes on Rolls-Royce shares, this growth share with a connection to SpaceX might have gone unnoticed by a…

Read more »

Close-up as a woman counts out modern British banknotes.
Investing Articles

With a 6.4% yield and P/E of 10 is this FTSE dividend stock a hidden passive income gem?

Building a portfolio of solid UK dividend stocks isn't hard. Paul Summers takes a closer look at one high-yielding candidate…

Read more »

Black woman using smartphone at home, watching stock charts.
Growth Shares

At 112p, where next for the Lloyds share price? 168p or 56p?

Jon Smith mulls over the direction going forward for the Lloyds share price, and explains why two very different scenarios…

Read more »

Investing Articles

This dividend stock has a 7.3% yield, and Stocks and Shares ISA investors are buying!

Looking to move from a Cash ISA to a Stocks and Shares ISA to target passive income? Alan Oscroft has…

Read more »

Surprised Black girl holding teddy bear toy on Christmas
Investing Articles

Could Rolls-Royce shares lock in another 34% gain before Christmas?

Mark Hartley takes a look at some of the more optimistic price targets for Rolls-Royce, and considers a best-case scenario.…

Read more »