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Rollover Risk and Credit Spreads: Evidence from International Corporate Bonds

Review of Finance 2016 20(2), 631-661 open access
Using a new dataset on corporate bonds placed in international markets by emerging and developed borrowers, this article demonstrates that a high proportion of short-term debt exacerbates the effect of debt market illiquidity on corporate bond spreads. This effect is present during both periods of financial stability and of financial distress, and it is smaller in the banking sector than in other sectors. The article’s major finding is robust when controlling for potential endogeneity. Moreover, the results are consistent with the predictions of structural credit risk models that argue that a higher proportion of short-term debt increases a firm’s exposure to debt market illiquidity through a “rollover risk” channel.

Unintended Consequences of Macroprudential Regulation

The Review of Corporate Finance Studies 2026
We study a macroprudential regulation in the emerging market of Chile that raised loan-loss provisions for residential mortgages with loan-to-value (LTV) ratios above 80%. The policy reduced high-LTV borrowing and overall leverage but unintentionally affected households likely to borrow above 80% LTV based on preregulation characteristics. These borrowers liquidated term deposits to meet higher down payments, lowering liquidity and raising short-term delinquency, especially near the threshold. The results uncover a regulatory trade-off: systemic risk is curbed, but financially constrained households face short-term vulnerability.

Sovereign ceilings “lite”? The impact of sovereign ratings on corporate ratings

Journal of Banking & Finance 2013 37(11), 4014-4024 open access
Although credit rating agencies have gradually moved away from a policy of never rating a corporation above the sovereign (the ‘sovereign ceiling’), it appears that sovereign credit ratings remain a significant determinant of corporate credit ratings. We examine this link using data for advanced and emerging economies over the period of 1995–2009. Our main result is that a sovereign ceiling continues to affect the rating of corporations. The results also suggest that the influence of a sovereign ceiling on corporate ratings remains particularly significant in countries where capital account restrictions are still in place and with high political risk.

Sovereign credit spreads, banking fragility, and global factors

Journal of Financial Stability 2024 72, 101235
This study explores the relationship between sovereign credit risk, banking fragility, and global financial factors in a large panel database of emerging market economies. To measure banking fragility, we construct a novel model-based semi-parametric metric (JLoss) that computes the expected joint loss of the banking sector in each country conditional on a country-level systemic event. Our metric of banking fragility is positively associated with sovereign credit spreads, after controlling for the standard determinants of sovereign credit risk, a comprehensive set of measures of systemic risk, and country and time fixed effects. The results additionally indicate that countries with more fragile banking sectors are more exposed to global (exogenous) financial factors than those with more resilient banking sectors. These findings underscore that regulators must ensure the stability of the banking sector to improve governments’ borrowing costs in international debt markets.

Improving Access to Banking: Evidence from Kenya

Review of Finance 2021 25(2), 403-447
We explore the relationship between bank branch expansion, financial inclusion, and profitability for Equity Bank. Unlike traditional banks, including foreign and government owned banks in Kenya, Equity Bank targets less developed territories and less privileged households. Its presence increased financial inclusion by 31% of the adult population between 2006 and 2015, especially for Kenyans who were less educated, did not own their own home, and lived in less-developed areas. The bank’s business model proves to be highly effective, with branch-level profits rising in areas with a smaller number of operating banks. Overall, the growth of Equity Bank demonstrates that financial inclusion can be achieved and sustained through profitable branching and service strategies that also serve the needs of underserved regions and populations. Thus, financial inclusion need not come at the sacrifice of bank profitability.