The AI investment surge is a potential flashpoint for systemic risk, “as financing has relied on enormous debt and highly leveraged nonbank structures that can rapidly unwind,” one analyst said in response to the report.
The Bank for International Settlements has warned that artificial intelligence “exuberance” could have major financial consequences, as heavy reliance on debt financing in AI ventures raises the risk of cascading defaults if investor optimism fades.
The five largest hyperscalers are set to spend more than $1 trillion on AI-related capital expenditures from 2025 through 2026, and these commitments are outpacing earnings, the Basel-based institution said in its annual economic report released Sunday.
“Equity valuations are elevated, particularly for firms at the core of AI development ... sustaining such high growth could become increasingly challenging,” the bank said.
AI investment enthusiasm has surged with the recent SpaceX IPO and planned public offerings from Anthropic and OpenAI, leading some market observers to draw parallels to previous boom-bust cycles such as electrification exuberance in the late 1920s and the dot-com bubble in the late 1990s.
The global economy displayed “surprising resilience” in 2025 despite successive shocks, partly driven by AI investments, the bank said.
However, “perils have grown” in 2026, with concerns over the risks of persistent inflation, which rose to a three-year high of 4.2% in the US in May, according to TradingEconomics.
The sustainability of AI-related investments, “growing financial vulnerabilities and weakening fiscal positions,” has added to those perils, the BIS report said.
Rapid AI boom raises questions about its sustainability. Source: BIS
If central banks tighten policy to contain inflation, this could precipitate a “sharp pullback in [AI] asset prices after a prolonged period of exuberant risk-taking,” which could trigger “disruptive macro-financial feedback loops,” the BIS said.
The BIS cautioned that a large correction in AI valuations could have more pronounced wealth effects and a “sharper consumption pullback” than in the past, given US market dominance. “Financial stability could also be at risk in the event of an AI bust.”
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