The global economy is already navigating choppy waters, with volatile bond markets and stubborn inflation posing known threats. But now, the International Monetary Fund is pointing to a new storm cloud on the horizon: the booming artificial intelligence
sector.
A Trio of Threats
In its latest Global Financial Stability Report, the International Monetary Fund (IMF) identified three major risks that could trigger sharp market turmoil: a sudden correction in the AI market, a disorderly spike in government bond yields, and the growing threat of cyberattacks. While the global economy has shown resilience, the IMF warns against complacency, urging policymakers to address these vulnerabilities before they escalate. The report highlights that risks have intensified since its previous assessment in April 2026, largely due to rising energy prices and persistent fiscal concerns in major economies.
The AI Valuation Bubble
Artificial intelligence has been a major engine of economic activity, with massive investments in data centres and semiconductors driving growth. This has led to sky-high stock market valuations for companies at the forefront of the AI boom. However, the IMF cautions that these optimistic valuations might not be sustainable. If the promised profitability from AI doesn't materialize, or if investment falters, it could trigger a sharp correction in AI-related asset prices. The fund warns that such a correction could have global consequences due to the high international exposure to US tech assets.
Echoes of Bubbles Past
The current frenzy around AI valuations draws parallels to the dot-com bubble of the late 1990s. In both cases, excitement over a transformative new technology fuelled a speculative investment boom that pushed company valuations far beyond their actual earnings. The concern is that if investor sentiment turns, the subsequent sell-off could be rapid and widespread. The IMF notes that the current situation is amplified by leverage; not just companies are borrowing heavily, but so are hedge funds and even retail investors speculating on AI stocks. This borrowed money increases the potential for forced selling during a downturn, which could accelerate losses.
A Concentrated and Interconnected Risk
The risk is magnified because the AI boom is highly concentrated in a handful of mega_cap technology firms. Just seven major tech companies now account for over a third of the S&P 500's value, meaning a slump in their fortunes could drag down the entire market. The IMF also points to the rise of 'circular financing' arrangements. These are deals where large AI firms invest in or extend credit to smaller partners, who then use those funds to buy services from the larger firm. While this fuels growth, it also creates a web of interdependencies that could cause financial distress to spread rapidly from one company to another if the market sours.
Spillover to the Broader Economy
A major correction in the AI sector wouldn't be contained to just tech stocks. The IMF warns of significant spillover effects. A sharp drop in asset prices would reduce household wealth, potentially dampening consumer spending and overall economic demand. It would also tighten financial conditions globally, making it harder and more expensive for all types of businesses to borrow and invest. The IMF explicitly states that a steep drop in AI investment could cut global GDP by as much as 1.1% by 2028. Furthermore, the massive debt being issued by AI companies to fund their expansion is starting to compete with government bonds for investor capital, adding another layer of pressure to already strained sovereign debt markets.
Don't Forget the Bond Market
Alongside the new warning on AI, the IMF reiterated its longstanding concerns about government debt. Persistently high fiscal deficits and the need for major economies to refinance huge amounts of debt have left sovereign bond markets fragile. A sudden spike in bond yields—driven by inflation fears or other shocks—could have severe repercussions as government bonds are a foundational asset for the entire global financial system. A sharp rise in yields would devalue other assets including AI stocks and erode the value of collateral used in countless financial transactions creating a feedback loop of instability.
