I investigate whether bank exposures to sovereign debt during the European debt crisis affected the real economy. I show that a shock to the marked-to-market (MTM) value of bank exposures to sovereign debt led to credit tightening in 2010–2011 that had negative real effects on small and young firms. Because banks do not usually mark their holdings of sovereign bonds to market, I explore the transmission channels of the unrealized losses on credit supply. I show that a shock to MTM exposures reduced short-term bank funding from U.S. money market funds rather than affecting equity or working through alternative channels.

We examine how changes in capital requirements and monetary policy shocks affect corporate investment during a credit boom. Our empirical analysis uses data on SMEs in the UK between 1998 and 2006, a period when monetary policy and microprudential regulation were set by independent institutions. We find that an increase in bank-specific capital requirements led to a contraction in corporate debt and investment, but only for firms with short bank relationships. This suggests that relationships between firms and banks are crucial for the transmission of regulatory shocks. Long relationships also attenuate the impact of monetary policy shocks, but to a smaller degree than for capital requirement changes. We also find that the two policies do not dampen or amplify the effect of each other, but their effects vary with the size of banks’ capital buffers and the creditworthiness of firms.

We show that international portfolios reflect the underlying heterogeneity in investors’ beliefs. Using data on the foreign sovereign debt holdings of European banks matched with their forecasts on future bond yields, we find that expecting higher returns and having more accurate forecasts are associated with larger bond holdings. Crucially, the elasticity of portfolio holdings to expected returns is increasing in the precision of the forecast, implying that investors optimally exploit comparative advantages in information production. We rationalize the results in a model in which partial information specialization arises endogenously by introducing a degree of unlearnable uncertainty about asset payoffs.

We show that bank competition diminishes banks’ incentives to produce information about prospective borrowers. We exploit the deregulation of U.S. interstate branching as a shock to competition and use borrowers’ stock returns after loan announcements to measure bank information production. Positive loan announcement returns are reduced in states that deregulate interstate branching, especially for opaque and bank-dependent firms and smaller banks that rely on soft information. Existing (i.e., inside) banks reduce information production more than new (i.e., outside) banks after deregulation, suggesting that they do so to deter borrower poaching. Furthermore, the probability of a covenant violation increases following deregulation.

We provide new evidence on how deposit funding affects bank lending. For identification, we exploit the 2011 reform of the investment income tax in Italy that induced households to substitute bank bonds with deposits. We find that banks with larger increases in deposits expand the supply of credit lines and long-term credit to low-risk firms. Additional evidence indicates that these results are consistent with theories emphasizing the demandable nature of the deposit contract rather than theories stressing the stability of deposit funding due to government guarantees. In this regard, we show that banks under stress face large runs on retail deposits, but not on retail bonds.

Open banking (OB) empowers bank customers to share their financial transaction data with fintechs and other banks. New cross-country data shows 49 countries adopted OB policies, privacy preferences predict policy adoption, and adoption spurs fintech entry. UK microdata shows that OB enables: (i) consumers to access both financial advice and credit; (ii) SMEs to establish new lending relationships. In a calibrated model, OB universally improves welfare through entry and product improvements when used for advice. When used for credit, OB promotes entry and competition by reducing adverse selection, but higher prices for costlier or privacy-conscious consumers partially offset these benefits.