{"title":"抵押贷款与银行风险承担:寻找风险“甜蜜点”","authors":"Yevgeny Mugerman, Joseph Tzur, Arie Jacobi","doi":"10.1142/S2010139218400086","DOIUrl":null,"url":null,"abstract":"A vast body of academic literature deals with banks’ optimal loan allocations. The general approach to solving this problem is to assume borrowers’ portfolios as given. Although this assumption is reasonable in the corporate sector, the situation differs radically in the mortgage markets, where borrowers are unobservable and banks’ screening capacity is tightly limited. We propose a novel dynamic model that assumes potential mortgage takers arrive randomly and sequentially at a bank. In a simulation, we show that the effect of a more stringent level of perceived risk on a bank’s expected net income can be positive or negative. Remarkably, if both level of wealth inequality and screening capacity are low, a more severe level of perceived risk can decrease a bank’s expected net income. In this situation, regulators should be particularly careful about increasing regulation in the form of a lower loan-to-value ratio.","PeriodicalId":45339,"journal":{"name":"Quarterly Journal of Finance","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2018-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Mortgage Loans and Bank Risk Taking: Finding the Risk “Sweet Spot”\",\"authors\":\"Yevgeny Mugerman, Joseph Tzur, Arie Jacobi\",\"doi\":\"10.1142/S2010139218400086\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A vast body of academic literature deals with banks’ optimal loan allocations. The general approach to solving this problem is to assume borrowers’ portfolios as given. Although this assumption is reasonable in the corporate sector, the situation differs radically in the mortgage markets, where borrowers are unobservable and banks’ screening capacity is tightly limited. We propose a novel dynamic model that assumes potential mortgage takers arrive randomly and sequentially at a bank. In a simulation, we show that the effect of a more stringent level of perceived risk on a bank’s expected net income can be positive or negative. Remarkably, if both level of wealth inequality and screening capacity are low, a more severe level of perceived risk can decrease a bank’s expected net income. In this situation, regulators should be particularly careful about increasing regulation in the form of a lower loan-to-value ratio.\",\"PeriodicalId\":45339,\"journal\":{\"name\":\"Quarterly Journal of Finance\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2018-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Quarterly Journal of Finance\",\"FirstCategoryId\":\"91\",\"ListUrlMain\":\"https://doi.org/10.1142/S2010139218400086\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BUSINESS, FINANCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Quarterly Journal of Finance","FirstCategoryId":"91","ListUrlMain":"https://doi.org/10.1142/S2010139218400086","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BUSINESS, FINANCE","Score":null,"Total":0}
Mortgage Loans and Bank Risk Taking: Finding the Risk “Sweet Spot”
A vast body of academic literature deals with banks’ optimal loan allocations. The general approach to solving this problem is to assume borrowers’ portfolios as given. Although this assumption is reasonable in the corporate sector, the situation differs radically in the mortgage markets, where borrowers are unobservable and banks’ screening capacity is tightly limited. We propose a novel dynamic model that assumes potential mortgage takers arrive randomly and sequentially at a bank. In a simulation, we show that the effect of a more stringent level of perceived risk on a bank’s expected net income can be positive or negative. Remarkably, if both level of wealth inequality and screening capacity are low, a more severe level of perceived risk can decrease a bank’s expected net income. In this situation, regulators should be particularly careful about increasing regulation in the form of a lower loan-to-value ratio.
期刊介绍:
The Quarterly Journal of Finance publishes high-quality papers in all areas of finance, including corporate finance, asset pricing, financial econometrics, international finance, macro-finance, behavioral finance, banking and financial intermediation, capital markets, risk management and insurance, derivatives, quantitative finance, corporate governance and compensation, investments and entrepreneurial finance.