Whose claim grows with the borrowing?
European Central Bank (ECB) President Christine Lagarde offered a telling measure on 28 September: AI-related borrowing makes up roughly a quarter of credit growth to firms. Firms are also expected to direct about 10 per cent of this year’s total investment to AI. Those figures do not measure the stock of risky debt. They show how much of the new credit flow now depends on one investment wave.[1]
Lagarde says global equity valuations are concentrated in a small group of AI firms that are rapidly adding debt. That concentration is the first pressure point. A downgrade to revenue expectations could weigh on shares and raise the cost of fresh borrowing. Cheaper funding or strong cash generation could interrupt the chain; the speech gives no company-level maturity or collateral schedule.[1]
The spillover path and its buffer
Lagarde warns that a reassessment of earnings prospects and debt sustainability could reach euro area investors and the wider economy through a market correction. Transmission requires meaningful investor exposure and a loss that changes spending or financing. Her speech gives no amount for that exposure. The concentration is documented; the spillover remains a conditional path.[1]
The ECB expects higher long-term yields to slow growth and raised its key policy rates by 25 basis points in September. Higher market yields are a separate pressure on the price of new debt. Sound earnings and long maturities could absorb it. The useful test is whether the growing AI share of new credit is followed by higher company borrowing costs and actual investor losses.[1]