This report does not constitute a rating action. The steady rise of nonbank credit providers in Europe has turned banks into essential liquidity providers for the nonbank sector. While this shift allows banks to support the nonbank sector through highly structured, low-risk loans, it introduces operational complexity. This complexity, combined with the material scale of the nonbank financing industry, can lead to substantial losses for banks. Billion-dollar write-downs involving U.S. firms TriColor and First Brands and the insolvency of U.K. bridge lender MFS revealed banks' exposure to nonbanks. They also served as a reminder that such events, though rare and idiosyncratic in nature, can impair earnings and credit performance, even if they have not affected ratings yet. In this report,