This paper develops a quantitative theory of how people weigh the risks of infections against the benefits of engaging in social interactions that contribute to the spread of infectious diseases. Our framework takes into account the effects of public policies and private behavior on the spread of the disease. We evaluate the model using a novel micro panel dataset on consumption expenditures of young and older people across the first three waves of COVID-19 in Portugal. Our model highlights the critical role of expectations in shaping how human behavior influences the dynamics of epidemics.

Der „umgekehrte Drehtüreffekt“ beschreibt das Phänomen, wenn ehemalige Bankerinnen und Banker Vorstandspositionen in nationalen Aufsichtsbehörden (National Supervisory Agency, NSA) bekleiden. Ein neu erhobener Datensatz zeigt, dass etwa ein Drittel der Vorstandsmitglieder in europäischen NSA vorher in der Finanzindustrie tätig war. Die Bestellung ehemaliger Banker in NSA-Vorstände geht mit positiven Börsenreaktionen einher, was auf eine „Näheprämie“ in der Bewertung beaufsichtigter Banken hindeutet. Im Gegensatz dazu ruft die Berufung von Bürokraten ohne praktische Vorkenntnisse in der Bankenwelt negative Börsenreaktionen hervor. Bis zur Einführung des Einheitlichen Aufsichtsmechanismus (Single Supervisory Mechanism, SSM) in Europa korreliert die Präsenz ehemaliger Banker in NSA-Vorständen mit einer geringeren regulatorischen Kapitalquote, was auf einen nachsichtigeren Aufsichtsstil schließen lässt.

Bank lobbying has a bitter taste in most forums, ringing the bell of preferential treatment of big banks from governments and regulators. Using corporate loan facilities and hand-matched information on bank lobbying from 1999 to 2017, we show that lobbying banks increase their borrowers' overall performance. This positive effect is stronger for opaque and credit-constrained borrowers, when the lobbying lender possesses valuable information on the borrower, and for borrowers with strong corporate governance. Our findings are consistent with the theory positing that lobbying can provide access to valuable lender-borrower information, resulting in improved efficiency in large firms' corporate financing.

How do firms invest when financial constraints are relaxed? We document that firms affected by a large positive credit supply shock predominantly increase borrowing for transaction-based purposes. These treated firms have larger asset and employment growth rates; however, growth entirely stems from the increased takeover activity. Announcement returns indicate a low quality of the credit-supply-induced takeover activity. These results offer the possibility that credit-driven growth can simply reflect redistribution, rather than net gains in assets or employment.

The establishment of the European Banking Union constitutes a major change in the regulatory framework of the banking system. Main parts are implemented via directives that show staggered transposition timing across EU member states. Based on the newly compiled Banking Union Directives Database, we assess how banks’ funding costs responded to the Capital Requirements Directive IV (CRD IV). Our findings show an upward trend in funding costs which is driven by an increase in cost of equity and partially offset by a decline in cost of debt. The diverging trends are most present in countries with an ex-ante lower regulatory capital stringency, which is in line with banks’ short-run adjustment needs but longer-run benefits from increased financial stability.

We test whether organizational risk management matters to bondholders of U.S. bank holding companies (BHCs), and find that debt financing costs increase when the BHC has lower-quality risk management. Consistent with bailouts giving rise to moral hazard among bank creditors, we find that bondholders put less emphasis on risk management in large institutions for which bailouts are expected ex-ante. BHCs that maintained strong risk management before the financial crisis had lower debt costs during and after the crisis, compared to other banks. Overall, quality risk management can curtail risk exposures at BHCs and result in lower debt costs.