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Australia's Central Bank Lists the AI Investment Boom as a Threat to Its Own Financial Stability
The Reserve Bank of Australia's October 2026 Financial Stability Review says risk premia in global equity and credit markets are low by historical standards while exposure to the AI build-out grows, estimates hyperscalers' obligations to off-balance-sheet vehicles at $1 trillion to $1.5 trillion, and names a deterioration in expectations for AI adoption or profitability as the most likely catalyst for a sharp repricing.
The Reserve Bank of Australia has no AI companies to supervise and almost no AI stocks in its domestic market, which makes its October 2026 Financial Stability Review one of the more detached official assessments of the boom. The chapter on the global macro-financial environment treats the AI investment cycle as an external threat to Australian stability, in the same category as geopolitical shocks, and spends several pages on how it is being financed.
The numbers are the useful part. The Review cites estimates of as much as US$7.7 trillion of AI capital outlays by 2030 and says debt is expected to cover over a third of planned spending; nearly 30% of US investment-grade bond issuance in the first half of 2026 came from technology firms, and issuance in the year to August was about 50% above the same period of 2025. Off-balance-sheet arrangements through special purpose vehicles are growing, and the RBA puts hyperscalers' obligations to those vehicles at "US$1 to 1.5 trillion". It also describes the circular financing that has drawn attention elsewhere: cloud providers investing in AI developers that then buy their infrastructure, and chipmakers financing the neocloud firms that buy their chips.
The Review's judgement on valuations is measured but clear. "Current equity prices reflect very strong expectations regarding future adoption and productivity rates", it says, while "risk premia in global equity and credit markets remain low by historical standards". A small group of AI-exposed technology and semiconductor firms has driven index performance, and the small number of non-substitutable providers of cloud, data and AI services increases the risk that a problem at one spreads. Listed AI firms' balance-sheet leverage is still low, the RBA notes, but it expects that to rise, and it points to data-centre construction, utilities and neocloud providers as the pockets where risk is already higher.
On what could go wrong, the Review is specific: "a notable potential catalyst could be a deterioration in expectations for AI adoption or profitability", after which "highly valued AI-exposed firms could be susceptible to sharp repricing", with leveraged investors amplifying the move. It records that AI-related equities saw significant volatility in July and that a US hedge fund, Situational Awareness, suffered major losses on leveraged AI positions. Three further vulnerabilities are listed: the unprecedented scale and speed of data-centre investment, hardware that "may become obsolete as technologies advance rapidly", and long-term commitments that reduce firms' flexibility if conditions change.
The transmission to Australia is through funding. A severe global repricing "could sharply tighten financial conditions in Australia with potential consequences for financial stability", the RBA says, by raising domestic financing costs and restricting access to global funding and liquidity; hedging, liquidity buffers and a weaker exchange rate are the mitigants. The Review was published at the turn of the month, before the week in which CoreWeave's bonds fell below 80 cents on the dollar and the Nasdaq lost 4.5%, which makes its list of catalysts read less like a scenario than a description.
Sources: Reserve Bank of Australia — Financial Stability Review, October 2026: The Global Macro-financial Environment; Reserve Bank of Australia — Financial Stability Review, October 2026 (In Brief); Cyber Daily — Reserve Bank warns of AI bubble bursting in latest Financial Stability Review