Teaser rates in conventional adjustable-rate mortgage (ARM) markets

This article examines the pricing of teaser rates on adjustable-rate mortgages (ARMs). The theory indicates that lenders may offset teaser rates on ARMs through an increase in upfront fees or points, through looser life of loan rate caps, or through higher contract rates after the teaser has expired. Cross-sectional regression results fail to reject the null hypothesis that teaser ARMs are correctly priced.     

Frictions, Heterogeneity and Optimality in Mortgage Modeling

The purpose of this article is to provide a unified framework for incorporating frictions into a theoretical options-pricing model (OPM) for mortgages. This article presents formulation for a frictions-adjustable mortgage model that integrates borrower heterogeneity while simultaneously preserving prepayment and default financial decisions. Our model demonstrates the flexibility of the OPM by simulating separate and concurrent effects of three categories of frictions on the mortgage and mortgage components. Researchers can use our example formulation to determine the effects of specific borrower characteristics on mortgage values without destroying the options theoretic framework.     

Legal Restrictions in Personal Loan Markets

This study examines the pricing of personal loans in the form of second mortgages to determine whether state-specific default laws have an effect on the availability and cost of that debt. We examine the pricing of loans to higher risk borrowers and whether borrowers in states that limit lender ability to seek default remedies pay higher credit costs. Our results indicate that, for the most part, lenders rationally price loans to higher risk borrowers. However, when we focus on borrowers with low credit scores, the results indicate that mean actual loan rates are higher than those predicted by our model. The results also indicate that state-specific default laws have an effect on the price of credit. Finally, the results show that there is a greater degree of error in the pricing of second mortgage loans to borrowers with low credit scores than to borrowers with high credit scores.     

固定利率住房抵押贷款定价研究——基于隐含期权视角

由于缺乏经验,我国商业银行固定利率住房抵押贷款定价存在不合理性,既影响了固定利率住房抵押贷款业务的健康发展,又导致了借贷双方风险与收益的不匹配。在市场利率服从几何布朗运动的基础上．本文从隐含期权视角出发构建固定利率住房抵押贷款单位风险收益最大化模型,并求出最优解,为商业银行固定利率住房抵押贷款定价提供理论和技术参考。     

Econometric models of the Eleventh District Cost of Funds Index

The Eleventh District Cost of Funds Index (COFI) is a popular index for pricing adjustable-rate mortgages. COFI is calculated from the interest expenses incurred by thrifts when raising funds. It is a mixture of current and past interest rates on many different financial instruments. COFI can be modelled well with simple econometric models. Commonly used, simple COFI models are compared using a method developed by Hendry (1989). Some of these models, which appear to fit the data well, have nonrobust parameters, significant serial correlation, and heteroscedastic errors. These poorly specified models may lead to systematic mispricing of COFI mortgages. Once a robust econometric model is chose, the lagged adjustment of COFI to movements in interest rates can be incorporated into mortgage pricing models.     

Fixed‐Rate Mortgages,Labor Markets,and Efficiency

The paper studies the effects of mortgage choices between fixed‐rate mortgages (FRMs) and adjustable‐rate mortgages (ARMs) on labor market efficiency. FRMs provide insurance for risk‐averse borrowers in the sense that they pay the same rate over time and are not subject to uncertain spot market rates. FRMs, however, discourage borrowers from moving to other regions despite better employment opportunities, as they terminate the FRM contracts in order to move and their new loan interests may be higher. As FRM‐borrowers do not move to other regions due to the interest lock‐ins, entrepreneurs in other regions lose the potential surpluses from productive matches that would have occurred between borrowers‐workers and entrepreneurs. Borrowers ignore this negative externality they impose on the entrepreneurs when choosing their mortgages, and too many borrowers choose FRMs relative to the efficient level. If FRMs are eliminated and ARM‐insurance (that protects ARM‐borrowers against uncertain adjustable interest rates) is created, it will improve efficiency. The paper also assesses quantitatively the welfare effects of eliminating FRMs and providing ARM‐insurance.     

An Empirical Investigation of Alternative Contingent Claims Models for Pricing Residential Mortgages

Researchers have employed option pricing techniques to analyze mortgage financing and valuation. Alternative models (one-, two-, and three-variable models) employing different variables (short- and long-term interest rates and building value) have been designed to price mortgage securities. No prior research has addressed the question of whether the pricing accuracy of these contingent claims models improves as states increase or whether contingent claims models' valuation abilities generate reasonable estimates of primary mortgage market prices. The articles investigates the relative efficiency of each of these alternative mortgage valuation models in predicting primary market mortgage values. Our results show that a two-variable model (short rate and building value) is the most efficient. Valuation results indicate a positive pricing spread between the primary market and the theoretically estimated value.     

Reexamining the Price Effects of Assumption Financing: The Case of Above-Market Interest Rates

Although previous research addresses the price effects of below-market loan assumptions in housing transactions, no direct evidence exists regarding the price effects of above-market loan assumptions. This study develops a hypothesis of strictly nonnegative price effects in assumption financing and empirically documents a positive impact in housing transactions involving above-market loan assumptions. Based on a switching regimes regression analysis of 2,669 single-family house transactions, we find evidence of a significant price premium in moderately priced homes involving above-market loan assumptions but no evidence for a financing premium for more expensive homes. The results suggest that the sources of the premium in the moderately priced home market are the assuming buyer's motivations to minimize transactions costs and to avoid lenders' qualification criteria.     

Price adjustment and exchange rate pass-through

This paper develops a simple theoretical model that can be used to account for the determinants of exchange rate pass-through to consumer prices. While recent evidence has found low estimates of pass-through in many countries, there is little consensus on an explanation for this. Our paper argues that sticky prices represent a key determinant of exchange rate pass-through. We make this argument in two stages. First, holding the frequency of price change constant, we show that our model calibrated to data from low-inflation countries can reproduce the estimates of very low pass-through for these countries. The principal determinant of low pass-through in this case is the slow adjustment of prices. We then extend the model to allow the frequency of price change to be endogenous. Calibrating to a wider set of countries, including both low-inflation and high-inflation countries, we show that our model implies that exchange rate pass-through is increasing in average inflation, but at a declining rate. Performing the identical exercise on the data, we find a striking correspondence between the predictions of the model and those of the data.     

Housing and the mortgage securities markets: Review,outlook, and policy recommendations

During the 1980s, strong demographic demand for housing created a bulging need for mortgage credit. The mortgage market has creatively accommodated this need through extensive securitization of residential mortgages. This process greatly facilitated the financing of housing demand. During this decade, however, the scheme of funding long-term mortgages with short-term deposits bankrupted savings institutions. A gigantic federal bailout for thrifts was finally required. In the 1990s, the weakening demographics and the resulting reduction in the demand for mortgage credit afford the federal government opportunities to reformulate its housing policies in terms of limiting federal insurance on consumer deposits, phasing out income tax deductibility of mortgage interest, and ensuring capital adequacy at federally sponsored credit agencies.     

Subprime Lenders and Mortgage Market Completion

Without a subprime market, some borrowers by virtue of poor credit history, unstable income, and other characteristics are unable to qualify for a mortgage. With a subprime market, there is a more complete credit supply schedule with the market pricing for poorer credit quality in the mortgage rate. By completing the capital market, subprime lenders reduce borrowing constraints. The result is a social welfare gain. Low-credit applicants otherwise denied funding are able to qualify by paying higher interest rates in exchange for offering more equity or lower loan-to-value ratios. This prediction is consistent with the subprime applicants financing or refinancing their mortgages at relatively low loan-to-value ratios.     

A Test of Cultural Affinity in Home Mortgage Lending

This paper assess cultural affinity as a potential explanation for observed racial disparities in mortgage rejection rates. Two formulations of the theory have evolved in the literature. The taste-based cultural affinity hypothesis asserts that lenders have a blanket preference for members of the same race, while the common bond hypothesis asserts that cultural affinity allows lenders to better assess the credit quality of members of the same race. The analysis involves tests that focus on the experiences of applicants with marginal credit quality, as the two theories offer conflicting predictions regarding their application patterns and treatment by lenders. The results of these tests provide weak support for the existence of taste-based cultural affinity, but contradict the predictions of the common bond form of the theory.     

Termination of distressed residential mortgages: An empirical analysis

A sample of 209 distressed mortgages is used to analyze the terminations of distressed mortgages. An option-based model is compared to a traditional default model. Results show that the traditional model is statistically superior. However, the model's ability to identify a default is similar to that of the simpler option-based model. Alternative measures of borrower's equity are compared. Measuring borrower's equity using total debt more accurately explains default than using either the mortgage balance or the mortgage value.     

A Reconsideration of the Jumbo/Non-Jumbo Mortgage Rate Differential

Consistent with a series of recent papers, the interest-rate differential between mortgages eligible for purchase based on loan size by Fannie Mae and Freddie Mac and larger loans is estimated to be 22 basis points over the 1986–2000 period. This differential averaged 19 basis points for the 1996–2000 period. Other significant effects include: loans slightly above the conforming loan limit and originated late in a calendar year often have a lower rate that nearly fully anticipates their likely characterization as a non-jumbo loan after the conforming loan limit is indexed effective each January; loan-to-value ratios affect jumbo loan rates much more than they affect non-jumbo loan rates; loans located in non-metropolitan areas have a 3 basis point differential versus loans in metropolitan areas that is surprisingly small given the likely higher cost to service non-metropolitan loans and the higher degree of uncertainty about non-metropolitan collateral values; and estimated regional mortgage rate differentials have narrowed through time.     

费率市场化对车险市场影响的经济学模型分析

为了解决车险市场长期以来高回扣、高代理费的混乱局面,我国在2003年1月1日推行费率市场化,但随之而来的是,不仅各保险公司仍然采用高代理费争夺市场,而且还出现了过低费率的非理性定价以及费率的频繁调整。本文将以事实为基础,通过分析代理人的经营情况和保险公司保费收入最大化的行为模式,建立一个保险需求函数的模型,来解释费率改革如何影响车险市场,并提出了反思和建议。     

The pricing of exchange rate risk and stock market segmentation: The Canadian case

Empirical evidence by Eun and Resnick (1988), among others, has demonstrated the significance of exchange rate risk in the international asset allocation and they have noted that the risk is nondiversifiable. Yet, exchange rate risk was found by Jorion (1991) to be a risk factor that is not priced in the U.S. stock market. This study reexamines such counterintuitive results using data from the Toronto Stock Exchange. The evidence here weakly supports the pricing of the exchange rate risk. Further, the sample period in this study coincides with Jorion's to ensure that both studies examine the pricing of the exchange rate risk in the same global economic environment. The significant pricing of exchange rate risk in Canada and the insignificant pricing in the U.S. imply the possibility of market segmentation.     

基于套利理论与ICIR模型的债券市场发行定价偏离研究

基于套利定价理论与利率期限结构理论,运用Tobit多元线性回归模型,得出债券发行定价的主要影响因素为债券无风险利率、债券期限溢价、债项信用评级、债券主体信用评级和债券赎回风险溢价,在此基础上再通过改进的CIR定价模型(ICIR)对2006～2010年各债券定价偏离现象进行研究的结果表明,在1%的显著性水平上,ICIR模型测算的债券理论价格通过了二级市场的定价检验,ICIR模型对债券发行定价偏离进行检验具有较强的合理性;同时,从发行年份来看,近五年来,债券定价偏离总体呈逐年下降趋势,债券发行定价与ICIR定价与二级市场定价逐步接轨,市场化程度越来越高。