The IMF Is Warning That an AI Bubble Bursting Could Hit the Global Economy
The fund puts a number on the bust
The IMF is warning that an AI bubble bursting could hit the global economy. In a downside scenario, an AI investment bust could cut global growth by up to 1.3 percentage points in 2028.
The warning anchors the fund's October World Economic Outlook and Global Financial Stability Report, released around the IMF and World Bank annual meetings. The baseline is steady enough: global growth of 3.1% in 2026 and 3.4% in 2027. The downside case is where it gets interesting.
In the fund's modeled unwinding, faltering AI investment and profitability cut global investment by as much as 1.3% and global GDP by 0.4% by 2028, with consumption down 0.6%. A harsher repricing, in which investors globally doubt AI profits and sell at once, leaves global GDP 1.1% lower and U.S. output 1.8% lower by 2028. If expected productivity gains fail to materialize, U.S. equities could fall 20%.
Deputy research director Petya Koeva Brooks noted the output loss would not be enough to push growth to recession levels. Managing Director Kristalina Georgieva was blunter about the mood: "Don't take this resilience for granted."
Leverage is the amplifier
The IMF's real concern is not the technology. It is the financing stacked on top of it.
Since 2024, hyperscalers' share of global investment-grade bond issuance has risen to 10% from less than 1%, while their free cash flows decline under heavy data center spending. Hedge funds' gross equity positions plus margin loans have grown from 10% to about 15% of advanced-economy GDP, and single stocks now make up 28% of leveraged ETF assets, up from 16%.
Then there is the circularity. Across 14 publicly disclosed transactions since 2023, the fund counts roughly $300 billion of equity investments led by hyperscalers in financially weaker AI firms, plus $650 billion in debt, exchanged for $1.4 trillion in future revenue commitments. About $320 billion of that debt sits with the investees themselves. Distress at a key investee is what the fund calls "wrong-way risk": the investments lose value at the same moment the revenue tied to them is impaired.
"An AI market correction will affect the real economy," said Athanasios Vamvakidis, deputy director of the IMF's Monetary and Capital Markets Department. In an accompanying blog, Vamvakidis and Jason Wu wrote that there is "no room for complacency."
The stress is not theoretical. On October 15, South Korea's Kospi 200 slid roughly 8% and Japan's Nikkei 225 fell about 5% as semiconductor and AI-linked stocks came under pressure.
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Options market and stocks to watch
When the IMF models a 20% U.S. equity drawdown, the options market is where that scenario gets priced first. The concentration is the story: a handful of megacap names carry the index, so hedging demand shows up in NVDA, MSFT, GOOGL, AMZN and META before it shows up anywhere else, with AVGO and AMD carrying the chip side.
The leverage channels the fund flags map to listed names too: private credit and alternative managers like BX and KKR sit behind the off-balance-sheet debt, and leveraged single-stock products amplify every downtick. Watch put skew and credit spreads for the first sign the downside scenario is being taken seriously, and track AI headlines on the Unusual Whales news feed.
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