The Bank for International Settlements (BIS) has issued a warning that the current trillion-dollar investment surge in artificial intelligence by major tech companies could culminate in a significant "investment bust," potentially disrupting financial markets and hindering global economic growth. In its annual economic report, the BIS highlighted the risks associated with the "current AI frenzy," cautioning that if returns fall short, it could lead to a sudden contraction in financing, transforming the capital spending boom into a prolonged downturn. The report comes amid growing concerns over the extensive equity and debt financing fueling the AI sector, with tech companies leveraging low corporate credit spreads to raise substantial funds for AI projects. The recent $86 billion IPO of SpaceX exemplifies the strong demand for AI-related stocks, although market volatility and rising interest rate expectations pose additional risks. Allianz's investment chief has also expressed concerns, suggesting that the rapid issuance of $25 billion in bonds by SpaceX indicates potential "bubble territory" in the markets. Despite these warnings, the BIS acknowledged AI's potential to significantly enhance productivity over the next decade.