BIS warns AI investment boom could trigger next financial crash

What happened

The Bank for International Settlements (BIS) released its annual report on June 29, 2026, ranking an AI investment bust among the three biggest threats to global prosperity. The warning escalates rhetoric from hedge funds and Wall Street analysts who have flagged bubble risk for months.

Context and impact

The 'central bank of central banks' delivering this warning is the strongest official statement yet on AI bubble risk. It reinforces concerns about circular financing deals between Nvidia, OpenAI, Oracle and Microsoft that inflate mutual valuations without matching cash flow. For regulators, investors and hyperscalers, expect intensified scrutiny of capital structures and potentially slower funding for the next data center wave.

Details

• Five hyperscalers: more than $1T in capex over 2025-2026
• AI bust named one of three top global prosperity threats
• Circular financing (chipmakers ↔ hyperscalers ↔ AI labs) flagged as risky
• BIS compares the cycle to 1830s canals, 1840s railways, 1920s electrification, 1990s dot-com
• Disappointment in returns could trigger a sudden funding stop and cascading write-downs