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Analysis-Global markets were already fragile. Big AI bets could break them - Finance news and analysis from Global Banking & Finance Review
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Analysis-Global markets were already fragile. Big AI bets could break them 

Published by Global Banking & Finance Review

Posted on November 3, 2026

5 min read

· Last updated: November 3, 2026

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Big AI Bets Could Add Pressure to Already Fragile Global Markets

AI Investment and Its Impact on Global Financial Markets

By Dhara Ranasinghe and Amanda Cooper

LONDON, Nov 3 (Reuters) - Financial markets are struggling under the weight of wars, soaring sovereign debt and trade tensions, with signs of trouble showing across the world — from the selloff in Japanese and French bonds to plunging emerging-market currencies. Now, the one trade that helped investors remain optimistic is starting to show cracks as well.

The AI Spending Surge and Market Optimism

So far, the multitrillion-dollar spending splurge on artificial intelligence, aided by Washington's light-touch approach to business, has propelled stock markets to record highs and raised expectations for the global economy to grow a healthy 3% this year.

But investors are getting nervous about market resiliency. US President Donald Trump's erratic trade policies and the Iran war's energy shock have revived inflation worldwide, putting pressure on central banks to raise interest rates. That, along with AI's capital-investment surge and highly indebted governments, is driving up borrowing costs to multidecade highs.

With US midterm elections, volatile geopolitics and central bank policy promising further uncertainty in the final stretch of the year, some investors and economists say risks to the global economy are mounting.

"Rising rates always seem to sniff out and expose the most vulnerable time after time," said Jim O'Neill, former Goldman Sachs chief economist and former British Treasury minister. "Countries and businesses too exposed suffer the most."

He said if inflation did not ease, the risks stemming from the vast amount of debt-financed investment flowing into the AI sector would grow. The US central bank has missed its inflation target for more than half a decade; euro-area inflation at 3.8% is also above its 2% target.

"In some ways, it's surprising to me there haven't been more bumps in the AI trade already," O'Neill said.

Signs of Market Stress Emerge

‘SIGNS OF THINGS BREAKING’

Market jitters showed up abruptly in October, when investors rushed out of AI stocks and into safe-haven bonds.

More than $2 trillion in market value was wiped from the tech-heavy Nasdaq 100 last month, as Big Tech's earnings intensified investor scrutiny of whether the cash invested can generate returns quickly enough. The cost of insuring bonds of some tech companies surged, some proposed data center projects struggled to raise money, and technology stocks from South Korea and China to the US tumbled.

Investors flocked to bonds. Yields, which move inversely to price, fell from multidecade highs, with the benchmark 10-year Treasury, which guides borrowing costs globally, falling almost 20 basis points on October 22, its biggest daily fall since early 2023.

The 10-year yield is still hovering around 5%, a threshold some investors see as a risk to broader financial stability.

Strains were already showing up in parts of the world where the AI buildout has been less of a driving force.

Regional Market Reactions

In France, bond yields soared to levels last seen during the 2012 euro zone debt crisis, leaving the government with little room to address demands from protesters who have taken to the streets in the worst civil unrest in years.

In Japan, whose economy is dependent on energy imports, bond yields recently hit 30-year peaks. Authorities are under pressure to raise rates faster, undermining Tokyo’s policy goals that called for additional spending and possibly upending global capital flows.

"There are some signs of things breaking," said Mike Riddell, a lead portfolio manager at Fidelity International, which manages over $1 trillion worth of assets, pointing to troubles in France and Australia, where the housing market is in the throes of ​the worst downturn in decades.

German bonds, also considered a safe haven, have become more attractive, Riddell added.

Expert Opinions on Economic Risks

US economist Paul Krugman said persistently elevated inflation that prompts significant rate increases, rising government bond yields and cracks in the AI boom are major concerns for the US economy.

"There are troubling aspects of the current economy that could potentially be harbingers of the crisis to come," Krugman wrote in an October 25 column on online newsletter platform Substack.

White House spokesperson Matthew Middleton said the Trump administration is committed to maintaining the US leadership in AI, fueling revenue growth and driving productivity across the economy.

Resilience Amid Uncertainty

To be sure, there are many reasons for investors to remain optimistic. Over the past two years, recession warnings have proven wrong. Europe’s economic data has proved more resilient than expected, and labour markets, too, have been stable.

Earnings are also strong. In the US, 84% of the S&P 500 companies that have reported results so far in the third quarter have beaten consensus estimates, according to LSEG data.

AI Spending Shielded Markets — Until Now

Much of that resilience, however, has been due to AI spending. The so-called hyperscalers — half a dozen US tech firms — are poised to invest $1.2 trillion next year in that buildout, or as much as all of Europe's companies combined, Danske Bank estimates. That's on top of an estimated $900 billion those tech firms are forecast to spend this year.

Tech and AI stocks compose over 40% of the S&P 500 and account for much of the index's 70% rise over the past five years. While the big-cap S&P has lost 3% from the early October peak as investors have pulled back from AI, the Russell 2000 small-cap index, whose companies are more rate-sensitive, is down nearly 8% from its August peak.

"I particularly note the narrowness of the leadership,” said Societe Generale global strategist Albert Edwards, who is credited with calling the 1997 Asian financial crisis.

“I like the adaption of the Winston Churchill quote: 'Never have st

Key Takeaways

  • Over $2 trillion wiped off the tech-heavy Nasdaq in October amid investor concern that soaring AI capex may not yield returns fast enough, especially with rising borrowing costs (investing.com).
  • France’s 10‑year bond yield surged above 5 %—a 24‑year high—with its risk premium over German Bunds reaching levels not seen since the euro‑zone debt crisis, underscoring fiscal strains (live.euronext.com).
  • The IMF and investors warn that debt‑fuelled AI spending, persistent inflation, and elevated borrowing costs pose mounting risks to financial stability, especially if AI returns disappoint (investing.com).

References

Frequently Asked Questions

How are AI investments impacting global financial markets?
AI investments have propelled stock markets to record highs but are now causing concerns about market resiliency as borrowing costs rise and investors become nervous.
What are the main risks currently facing global markets?
The main risks include wars, soaring sovereign debt, trade tensions, inflation, volatile geopolitics, and heavy investments in AI driving up borrowing costs.
Why are investors concerned about the AI sector's growth?
Investors worry that debt-financed investment in AI may not generate returns quickly enough, raising fears of vulnerabilities if inflation remains high.
What events triggered recent market jitters?
A selloff in tech-heavy indexes like the Nasdaq 100, surging bond yields in France and Japan, and a shift into safe-haven assets have heightened market volatility.
How is inflation affecting central bank policies?
Persistent inflation is pressuring central banks to raise interest rates, driving up global borrowing costs and exposing financial vulnerabilities.

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