Is DeepSeek about to cause a stock market crash?

With the stock market dominated by US tech companies focused on AI, is DeepSeek’s competitor to OpenAI about to brings things crashing down?

| More on:

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.

Burst your bubble thumbtack and balloon background

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.

The companies known as the Magnificent Seven make up over 20% of the global stock market. And a lot of this is based on their perceived advantage when it comes to artificial intelligence (AI). 

The big US tech firms hold all the aces when it comes to cash and computing power. But DeepSeek – a Chinese AI lab – seems to be showing this isn’t the advantage investors once thought it was.

What is DeepSeek?

DeepSeek doesn’t have access to the most advanced chips from Nvidia (NASDAQ:NVDA). Despite this, it has built a reasoning model that is outperforming its US counterparts – at a fraction of the cost. 

Investors might be wondering about how seriously to take this. But Microsoft (NASDAQ:MSFT) CEO Satya Nadella is treating DeepSeek as the real deal at the World Economic Forum in Davos:

“It’s super impressive how effectively they’ve built a compute-efficient, open-source model. Developments like DeepSeek’s should be taken very seriously.”

Whatever happens with share prices, I think investors should take one thing away from the emergence of DeepSeek. When it comes to AI, competitive advantages just aren’t as robust as they might initially look.

US AI

Microsoft is set to spend $80bn on AI in 2025. Very few other companies are able to do anything like this and that gives the company a huge advantage — at least, at first sight.

Investors should be careful though, in thinking about what that means. While it puts the firm in a strong position against its competitors, DeepSeek’s latest model indicates it’s not insurmountable.

Equally, Nvidia is the leader when it comes to AI chips. But while the threat from a rival catching up might be limited, the risk of demand falling as customers do more with its earlier products also needs considering.

The emergence of DeepSeek has highlighted both of these challenges. And for the biggest US tech stocks trading at high prices, I expect this to have a meaningful impact on share prices sooner or later.

Is this an opportunity?

The biggest question for investors is whether a drop in share prices is a buying opportunity. From my own perspective, I think it’s reason to be careful, but I’m also wary about overreacting. 

If there’s one thing I think investors should take from the emergence of DeepSeek, it’s that a competitive advantage in this area is harder to maintain than it might initially seem. And that cuts both ways. 

The US hyperscalers might have just seen their lead cut — or even eliminated entirely — by DeepSeek. But I think counting them out when it’s just been shown how hard it is to stay ahead in this industry is very reckless.

I don’t expect them to stay behind for long, but the question is whether they can ever establish a long-term lead. Apparently, big advantages in cash and computing power don’t guarantee this.

Warren Buffett 

Warren Buffett has been staying away from AI – and tech in general – following his misjudged investment in IBM. And I think a lot of investors would be wise to consider following his example. 

It turns out, assessing who has a durable edge when it comes to AI is harder than it looks. So even if the Magnificent Seven pulls the stock market lower, investors should be careful.

Stephen Wright has no position in any of the shares mentioned. The Motley Fool UK has recommended International Business Machines, Microsoft, and Nvidia. 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

Young Caucasian man making doubtful face at camera
Dividend Shares

Will the Diageo share price crash again in 2026?

The Diageo share price has crashed 35.6% over one year, making it one of the FTSE 100's worst performers in…

Read more »

Investing Articles

Is Alphabet still one of the best shares to buy heading into 2026?

The best time to buy shares is when other investors are seeing risks. Is that the case with Google’s parent…

Read more »

Investing Articles

Could the Barclays share price be the FTSE 100’s big winner in 2026?

With OpenAI and SpaceX considering listing on the stock market, could investment banking revenues push the Barclays share price higher…

Read more »

Investing Articles

Will the Nvidia share price crash in 2026? Here are the risks investors can’t ignore

Is Nvidia’s share price in danger in 2026? Stephen Wright outlines the risks – and why some might not be…

Read more »

Middle-aged white man pulling an aggrieved face while looking at a screen
Growth Shares

I asked ChatGPT how much £10,000 invested in Lloyds shares 5 years ago is worth today? But it wasn’t very helpful…

Although often impressive, artificial intelligence has its flaws. James Beard found this out when he used it to try and…

Read more »

Portrait of pensive bearded senior looking on screen of laptop sitting at table with coffee cup.
Investing Articles

Did ChatGPT give me the best FTSE stocks to buy 1 year ago?

ChatGPT can do lots of great stuff, but is it actually any good at identifying winning stocks from the FTSE…

Read more »

Surprised Black girl holding teddy bear toy on Christmas
Investing Articles

Who will be next year’s FTSE 100 Christmas cracker?

As we approach Christmas 2025, our writer identifies the FTSE 100’s star performer this year. But who will be number…

Read more »

Businessman with tablet, waiting at the train station platform
Investing Articles

I asked ChatGPT for an 8%-yielding passive income portfolio of dividend shares and it said…

Mark Hartley tested artificial intelligence to see if it understood how to build an income portfolio from dividend shares. He…

Read more »