The Bank for International Settlements warned Sunday that the artificial intelligence investment boom, backed by more than $1 trillion in hyperscaler spending and rising leverage, risks triggering a stock-market slump that could cascade through the broader economy.
"A reversal of AI optimism could likewise have major financial consequences, given AI firms' rising leverage and growing footprint in credit markets," the BIS said in its annual economic report published Sunday.
The five largest hyperscalers are set to spend more than $1 trillion on AI-related capital expenditures from 2025 through 2026, with commitments outpacing earnings, the Basel-based institution said. US inflation rose to a three-year high of 4.2 percent in May, according to TradingEconomics, compounding the risk. If central banks tighten policy to contain price pressures, that could precipitate a "sharp pullback in asset prices after a prolonged period of exuberant risk-taking," the BIS said, potentially triggering "disruptive macro-financial feedback loops."
The warning comes as equity valuations for AI-focused firms have reached levels the BIS described as "elevated," drawing comparisons to the dot-com bubble of the late 1990s and the electrification exuberance of the late 1920s. "Should inflation rise significantly or AI-led investment turn to a bust, the macroeconomic consequences could be amplified by existing financial vulnerabilities," the report said.
The BIS's caution extends beyond equity markets. The AI buildout has created what analysts describe as circular financing structures, where startups raise capital from the same hyperscalers that buy their services, creating a self-referential loop that could unwind rapidly if sentiment shifts.
Nick Ruck, director of LVRG Research, said the BIS was right to flag the AI investment surge as a potential flashpoint for systemic risk, "as financing has relied on enormous debt and highly leveraged nonbank structures that can rapidly unwind and amplify this cycle into a crisis."
"The current macroeconomic environment is already fragile from being stretched by inflation, record national debt, and disrupted commodity markets, so a bust of the AI capital stack could send shockwaves through an already strained global economy," Ruck said.
Chipflation compounds the risk
The AI industry may also become a victim of its own success. Surging semiconductor and memory chip prices — a phenomenon Morgan Stanley analysts have termed "chipflation" — are driving up costs for devices from smartphones to laptops. Apple said Thursday it would raise prices on a wide array of products by 18 percent to nearly 33 percent due to soaring memory and storage chip costs. BlackRock reported in March that surging semiconductor prices were "posing upside risks to global goods inflation."
The BIS also warned about stablecoins in its report, arguing they risk fragmenting the global monetary system and could weaken sovereign monetary control, particularly in emerging economies where dollar-pegged tokens accelerate dollarization.
The global economy displayed "surprising resilience" in 2025 despite successive shocks, partly driven by AI investments, the BIS said. However, "perils have grown" in 2026, with concerns over persistent inflation, financial vulnerabilities and weakening fiscal positions adding to the risks.
This article is for informational purposes only and does not constitute investment advice.