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.

Be ready for a savage stock market crash

An AI thought experiment has sent shockwaves through the stock market. How worried should we all be by this doomsday vision?

| More on:
Middle-aged white man pulling an aggrieved face while looking at a screen

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!.

Some writers here at The Motley Fool have been worrying about an AI-driven stock market crash. And it seems others are waking up to the risk because an AI doomsday Substack post has gone viral this week.

The post from Citrini Research even caused a number of stocks mentioned to drop sharply on Monday (23 February). These included DoorDash, American Express, and (fittingly) Monday.com.

Should you buy AstraZeneca Plc 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.

What did this post say? And how worried should we be?

The AI revolution is paradoxical

The lengthy post in question — entitled The 2028 Global Intelligence Crisis — describes a fictional future where AI rapidly displaces human labour.

A negative feedback loop emerges where companies, facing margin pressure, replace white-collar workers with AI. This soon reduces consumer spending, leading to further layoffs. 

Meanwhile, autonomous AI agents do more tasks for consumers (insurance renewals, travel booking, shopping, etc). Unlike humans, AI agents aren’t loyal to apps like Uber or Booking, so a huge amount of enterprise value is destroyed.

The S&P 500 starts crashing.

Jobs become harder to find and the crisis threatens the $13trn residential US mortgage market as white-collar incomes vanish. 

The paradox here is that this scary scenario is only possible if AI truly succeeds, not fails.

Source: Citrini Research

Some perspective

As alarming as all this sounds, it’s important to remember this is just an imagined scenario/warning, not a prediction.

Second, the 2028 timeframe is deliberately provocative. There’s no conclusive evidence AI is causing massive layoffs, while the physical AI buildout is creating jobs. So the economy appears in no immediate danger.

Moreover, elected governments are not passive observers. If unemployment were to rapidly reach the 10%+ described in the Citrini piece, we would likely see regulatory intervention to slow the pace of AI deployment.

Further down the line, measures like Universal Basic Income or job-retraining programmes could be funded by AI productivity taxes.

Today, generative AI still hallucinates. In regulated industries (finance, law, medicine, etc), a human with the proper authority still has to sign off.

Finally, nobody can predict exactly when a crash will happen.

Diversification

But we should at all times be ready for a big crash, whether it’s generated by AI, a pandemic, a financial crisis or something else. As I see it, there are there basic things we can do to prepare for the worst:

This last part is crucial. In my portfolio, I hold AstraZeneca (LSE:AZN). To my mind, the pharma giant looks more likely to benefit from the technology than be disrupted by it.

AI drug discovery, for example, should significantly increase the chances of a drug candidate succeeding in trials, as well as lowering costs and boosting margins. The firm is already leaning heavily into the technology in research and development.

Admittedly, a forward earnings multiple of 19 isn’t cheap. If the company’s growth unexpectedly slows, the stock could sell off.

On balance, however, I’m bullish on AstraZeneca moving forward. It now has 16 blockbuster medicines (those generating at least $1bn in annual sales).

By 2030, it’s aiming for $80bn in revenue, up from $58.7bn last year, driven by its massive pipeline and valuable oncology portfolio. 

I think AstraZeneca is worth considering today for a diversified Stocks and Shares ISA.

American Express is an advertising partner of Motley Fool Money. Ben McPoland has positions in AstraZeneca Plc and Uber Technologies. The Motley Fool UK has recommended AstraZeneca Plc and Uber Technologies. 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

Arrow symbol glowing amid black arrow symbols on black background.
Investing Articles

By mid-2027, analysts expect $2,913 in Micron stock to be worth

Could investing in Micron stock today be like investing in Nvidia three years ago when it was trading at significantly…

Read more »

Young Asian woman with head in hands at her desk
Investing Articles

£5,000 invested in SpaceX stock after the IPO is now worth…

To the surprise of many, SpaceX stock has fallen below its IPO price of $135 meaning that those who bought…

Read more »

A row of satellite radars at night
Investing Articles

Are BT shares a buy ahead of tomorrow’s Q1 trading update?

Mark Hartley weighs up the investment case for BT shares before its latest update. Will the group surprise investors with…

Read more »

Close-up of a woman holding modern polymer ten, twenty and fifty pound notes.
Investing For Beginners

£2k in this UK stock a year ago would now be worth £7,320

Jon Smith marvels at the performance of a UK stock, but explains why the current momentum means it might not…

Read more »

ISA coins
Investing Articles

How much could £20k invested in a Stocks and Shares ISA grow over time?

Mark Hartley explores the tax-free growth potential of a Stocks and Shares ISA to demonstrate what a £20k investment could…

Read more »

photo of Union Jack flags bunting in local street party
Investing Articles

If you’d put £10k in the FTSE 250 when Keir Starmer became PM, you’d have this now…

Starmer's gone and we have the fifth PM in just four years. But what happened to the FTSE 250 index…

Read more »

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 »