We study the causal effect of bank credit rating downgrades on the supply of bank lending. The identification strategy exploits the asymmetric impact of sovereign downgrades on the ratings of banks at the sovereign bound relative to banks that are not at the bound as a result of rating agencies' sovereign ceiling policies. This asymmetric effect leads to greater reductions in ratings-sensitive funding and lending of banks at the bound relative to other banks. Results for foreign borrowers and within lender-borrower relationships confirm that credit demand does not explain our findings.

This paper highlights the importance of middle-class and high-FICO borrowers for the mortgage crisis. Contrary to popular belief, which focuses on subprime and poor borrowers, we show that mortgage originations increased for borrowers across all income levels and FICO scores. The relation between mortgage growth and income growth at the individual level remained positive throughout the pre-2007 period. Finally, middle-income, highincome, and prime borrowers all sharply increased their share of delinquencies in the crisis. These results are consistent with a demand-side view, where homebuyers and lenders bought into increasing house values and borrowers defaulted after prices dropped.

We show that municipalities' financial constraints can have a significant impact on local employment and growth. We identify these effects by exploiting exogenous upgrades in U.S. municipal bond ratings caused by Moody's recalibration of its ratings scale in 2010. We find that local governments increase expenditures because their debt capacity expands following a rating upgrade. These expenditures have an estimated local income multiplier of 1.9 and a cost per job of $20,000 per year. Our findings suggest that debt-financed increases in government spending can improve economic conditions during recessions.

We provide new facts on the debt dynamics leading up to the financial crisis of 2007. Earlier research suggests that distortions in the supply of mortgage credit, evidenced by a decoupling of credit flow from income growth, may have caused the rise in house prices and the subsequent housing market collapse. This paper shows that the increase in mortgage originations was shared across the whole distribution of borrowers, and that middle-and high-income borrowers made up the majority of originations even at the peak of the boom. Compared to prior years, middle-and high-income borrowers (not the poor), as well as those with medium and high credit scores, made up a much larger share of delinquencies in the crisis relative to earlier years. We show that the relation between individual mortgage size and income growth during the housing boom was always strongly positive, also in line with previous periods (and independent of how income is measured). These results are most consistent with an expectations based view of the financial crisis in which both homebuyers and lenders were buying into increasing housing values and defaulted once prices dropped.

We study the causal effect of bank credit rating downgrades on the supply of bank lending. The identification strategy exploits the asymmetric impact of sovereign downgrades on the ratings of banks at the sovereign bound relative to banks that are not at the bound as a result of rating agencies' sovereign ceiling policies. This asymmetric effect leads to greater reductions in ratings-sensitive funding and lending of banks at the bound relative to other banks. Results for foreign borrowers and within lender-borrower relationships confirm that credit demand does not explain our findings.

This paper investigates how capital supply from mutual funds affects municipal bond financing, making three key contributions. First, we introduce an identification strategy using the rule-based update of Morningstar ratings for 5-year-old funds, isolating supply-side effects from fund and issuer fundamentals. The results indicate that exogenous fund flows increase bond issuance probability and decrease yields. Second, these fund flows lead to more issuances when funds and issuers are connected through underwriters, highlighting relationship lending in municipal bond financing. Third, municipal issuers leverage favorable financing conditions for new issuance of revenue bonds, which translates into higher local house prices.

We show that municipalities’ financial constraints can have a significant impact on local employment and growth. We identify these effects by exploiting exogenous upgrades in U.S. municipal bond ratings caused by Moody’s recalibration of its ratings scale in 2010. We find that local governments increase expenditures because their debt capacity expands following a rating upgrade. These expenditures have an estimated local income multiplier of 1.9 and a cost per job of $20,000 per year. Our findings suggest that debt-financed increases in government spending can improve economic conditions during recessions.

We show that production networks are important for the transmission of unconventional monetary policy. Firms with bonds eligible for purchase under the European Central Bank’s Corporate Sector Purchase Program act as financial intermediaries by extending additional trade credit to their customers. The increase in trade credit is pronounced from core countries to periphery countries and for financially constrained customers. Customers then increase investment and employment in response to the increased trade financing, whereas suppliers expand their customer base, contributing to upstream industry concentration. Our findings suggest that trade credit redistributes the effects of monetary policy across regions and firms.