• Federal Reserve Governor Lisa Cook warns elevated valuations across multiple asset classes increase risk of sharp market declines
  • Cook highlights specific vulnerabilities in Treasury market liquidity and calls for continued monitoring of private credit expansion
  • Artificial intelligence presents dual potential to both improve market functioning and introduce new destabilizing risks

Federal Reserve Governor Lisa Cook issued a stark warning about financial stability risks on Tuesday, pointing to elevated valuations in stocks, corporate bonds, housing, and leveraged loans that could precipitate sharp market declines.

While affirming the overall resilience of the financial system, Cook's remarks at a financial stability conference highlighted specific pressure points that have developed amid sustained investor optimism. "Valuations across several asset classes appear stretched," Cook noted, according to prepared text reviewed ahead of her delivery. "This increases the vulnerability of the financial system to a sharp correction."

The warning comes as the S&P 500 and Nasdaq continue trading near historical highs, supported by AI-driven optimism and robust corporate earnings in early 2025. Corporate bond spreads have narrowed significantly, reflecting strong investor confidence but also raising concerns about excessive risk-taking.

Cook specifically called out liquidity risks stemming from hedge funds' growing presence in Treasury markets. "The increased role of leveraged hedge funds in Treasury cash-futures basis trades warrants close monitoring," she said, noting that these positions could amplify stress during periods of market volatility.

On private credit, which has expanded rapidly in recent years, Cook offered a measured assessment. While not currently posing a systemic threat, she emphasized that "the rapid growth of this sector requires continued vigilance" from regulators. Private credit funds now hold over $2 trillion in assets, according to recent industry estimates.

Perhaps most notably, Cook addressed the emerging impact of artificial intelligence on financial markets, describing it as a double-edged sword. "AI has the potential to improve market efficiency and risk management, but it may also introduce new vulnerabilities," she stated, pointing to risks of model-driven herding behavior and flash crashes.

Market participants have been particularly attentive to Fed officials' views on financial stability amid concerns that persistent inflation could delay expected interest rate cuts. Cook, however, did not address monetary policy in her prepared remarks, focusing exclusively on structural vulnerabilities.

Her comments echo concerns raised by other regulators about the concentration of risk in non-bank financial institutions and come as housing prices have rebounded strongly in many regions, with some markets showing signs of overheating.

Attempts to reach Fed representatives for additional comment on the timing of Cook's warnings were unsuccessful. The Fed's next Financial Stability Report is scheduled for release later this quarter, which may provide more detailed analysis of the vulnerabilities Cook highlighted.

Correction: An earlier version of this article misstated the total assets in private credit. The correct figure is over $2 trillion.