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Advantageous Selection with Intermediaries: A Study of GSE-Securitized Mortgage Loans
Pub Date : 2020-04-12 DOI: 10.2139/ssrn.3574004
Hsin-Tien Tsai
This paper studies the effects of mortgage subsidies and imperfect competition in the U.S. mortgage market. I exploit discontinuities in interest rates generated by pricing rules and find evidence of advantageous selection. I estimate an industry model that highlights the relationship between mortgage subsidies, intermediary lenders' market power, and borrower's advantageous selection. The model shows that mortgage subsidies enable advantageous selection, creating a deadweight loss of 7.90 billion. Counterfactual analysis reveals that a 50% decrease in lender concentration reduces efficiency by 1.39 billion if mortgages are subsidized, and conversely, increases efficiency by 750.07 million if mortgages are not subsidized.
本文研究了抵押贷款补贴和不完全竞争对美国抵押贷款市场的影响。我利用定价规则产生的利率不连续性,找到有利选择的证据。我估计了一个行业模型,突出抵押贷款补贴,中介贷款人的市场力量和借款人的有利选择之间的关系。该模型显示,抵押贷款补贴促成了有利选择,造成了79亿美元的无谓损失。反事实分析表明,如果抵押贷款得到补贴,贷款人集中度降低50%,效率会降低13.9亿美元;相反,如果抵押贷款没有得到补贴,效率会提高7.507亿美元。
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引用次数: 0
What Do Online Listings Tell Us About the Housing Market? 网上房源信息告诉我们关于房地产市场的什么?
Pub Date : 2020-04-06 DOI: 10.2139/ssrn.3176962
M. Loberto, Andrea Luciani, Marco Pangallo
Traditional data sources for the analysis of housing markets show several limitations, that recently started to be overcome using data coming from housing sales advertisements (ads) websites. In this paper, using a large dataset of ads in Italy, we provide the first comprehensive analysis of the problems and potential of these data. The main problem is that multiple ads ("duplicates") can correspond to the same housing unit. We show that this issue is mainly caused by sellers' attempt to increase visibility of their listings. Duplicates lead to misrepresentation of the volume and composition of housing supply, but this bias can be corrected by identifying duplicates with machine learning tools. We then focus on the potential of these data. We show that the timeliness, granularity, and online nature of these data allow monitoring of housing demand, supply and liquidity, and that the (asking) prices posted on the website can be more informative than transaction prices.
传统的住房市场分析数据来源显示出一些局限性,最近开始使用来自住房销售广告网站的数据来克服这些局限性。在本文中,我们使用意大利的大型广告数据集,首次对这些数据的问题和潜力进行了全面分析。主要问题是,多个广告(“重复”)可能对应于相同的住房单元。我们发现,这一问题主要是由于卖家试图增加其商品的可见性。重复会导致对住房供应数量和组成的歪曲,但这种偏见可以通过使用机器学习工具识别重复来纠正。然后我们关注这些数据的潜力。我们表明,这些数据的及时性、粒度和在线性质允许对住房需求、供应和流动性进行监测,并且网站上公布的(要价)价格可以比交易价格提供更多信息。
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引用次数: 17
The Geography of COVID-19 Growth in the US: Counties and Metropolitan Areas 美国COVID-19增长的地理:县和大都市区
Pub Date : 2020-04-06 DOI: 10.2139/ssrn.3570540
William L. C. Wheaton, Anne Kinsella Thompson
It has been 70 days since the first case of COVID-19 was detected in the US. Since then it has spread and grown in all but 2 of 376 MSAs and all but 45 of the 636 counties that are contained in these MSA. In this paper we examine the determinants of how rapidly the virus grows once it has been seeded within a MSA or county. We find virus cases can be well predicted by area population, as well as days-since-onset. In the data, virus cases scale almost proportionately with population, and excluding population significantly changes the impact of days-since-onset. Growth is also related to residential density and per capita income, particularly at the county level. There are weaker relationships to MSA average household size, per capita income, and the fraction of the population that is over 65. These results come from parameterizing a simple power function model of cumulative infections since onset. This is shifted proportionately by the various MSA/County covariates. We also experiment with restricting the sample of areas so as to have a minimum number of cases – equal to .01% of the area’s population. This effectively focuses on the more advanced part of the virus growth curve. Here we find a significant further decrease in the coefficient of days-since-onset. This is preliminary evidence that the virus growth is tapering. We intend to repeat our analysis as time progresses.
这距离美国发现首例新冠肺炎病例已经过去了70天。从那时起,它在376个MSA中的2个以及MSA所包含的636个县中的45个以外的所有县蔓延和发展。在本文中,我们研究了病毒在MSA或县内播种后生长速度的决定因素。我们发现病毒病例可以通过地区人口和发病天数来很好地预测。在数据中,病毒病例的规模几乎与人口成正比,排除人口会显著改变发病后天数的影响。增长还与住宅密度和人均收入有关,特别是在县一级。与MSA平均家庭规模、人均收入和65岁以上人口比例的关系较弱。这些结果来自自发病以来累积感染的简单幂函数模型的参数化。这被各种MSA/县协变量成比例地转移。我们还尝试限制地区样本,以达到最低病例数——等于该地区人口的0.01%。这有效地集中在病毒生长曲线的较高级部分。在这里,我们发现发病天数系数进一步显著下降。这是初步证据,表明病毒的增长正在减少。随着时间的推移,我们打算重复我们的分析。
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引用次数: 36
Government Real Estate Interventions and the Stock Market 政府房地产干预与股票市场
Pub Date : 2020-04-04 DOI: 10.2139/ssrn.3568770
A. Akbari, Karolina Krystyniak
Abstract We study the spillover of government interventions in the real estate market to the stock market. We find that the more active mutual funds decreased ownership in equities with no short-term reversal. Furthermore, they increased ownership in the finance sector stocks without significant changes to their real estate equity holdings. The interventions affecting the riskiness of the finance sector stocks triggered a larger trading response than the ones focused on the real estate sector stocks’ cash flows. Overall, the spillover of the housing market shocks to the stock market seems to be materialized mostly through the discount rate channel.
摘要本文研究政府对房地产市场的干预对股票市场的溢出效应。我们发现,更积极的共同基金减少了股票的所有权,没有短期逆转。此外,他们增持了金融类股票,而房地产股权的持有量没有发生重大变化。影响金融类股风险的干预措施比关注房地产类股现金流的干预措施引发的交易反应更大。总体而言,房地产市场冲击对股市的溢出效应似乎主要通过贴现率渠道实现。
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引用次数: 2
A Finance Approach to Climate Stress Testing 气候压力测试的金融方法
Pub Date : 2020-04-01 DOI: 10.2139/ssrn.3573107
H. J. Reinders, D. Schoenmaker, Mathijs A. Van Dijk
There is increasing interest in assessing the impact of climate policies on the value of financial sector assets, and consequently on financial stability. Prior studies either take a "black box" macro-modelling approach to climate stress testing or focus solely on equity instruments - though banks' exposures predominantly consist of debt. We take a more tractable finance (valuation) approach at the industry-level and use a Merton contingent claims model to assess the impact of a carbon tax shock on the market value of corporate debt and residential mortgages. We calibrate the model using detailed, proprietary exposure data for the Dutch banking sector. For a €100 to €200 per tonne carbon tax we find a substantial decline in the market value of banks' assets equivalent to 4-63% of core capital, depending on policy choices.
人们越来越有兴趣评估气候政策对金融部门资产价值的影响,从而对金融稳定的影响。先前的研究要么采用“黑箱”宏观建模方法进行气候压力测试,要么只关注股权工具——尽管银行的风险敞口主要由债务构成。我们在行业层面采用了一种更容易处理的融资(估值)方法,并使用默顿或有债权模型来评估碳税冲击对企业债务和住宅抵押贷款市场价值的影响。我们使用荷兰银行业详细的专有风险敞口数据来校准模型。对于每吨100欧元至200欧元的碳税,我们发现银行资产的市场价值大幅下降,相当于核心资本的4-63%,具体取决于政策选择。
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引用次数: 33
Why is Intermediating Houses so Difficult? Evidence from iBuyers 居间中介为何如此困难?来自iBuyers的证据
Pub Date : 2020-03-30 DOI: 10.2139/ssrn.3616555
Greg Buchak, Gregor Matvos, T. Piskorski, Amit Seru
We study the frictions in dealer-intermediation in residential real estate through the lens of “iBuyers,” technology entrants, who purchase and sell residential real estate through online platforms. iBuyers supply liquidity to households by allowing them to avoid a lengthy sale process. They sell houses quickly and earn a 5% spread. Their prices are well explained by a simple hedonic model, consistent with their use of algorithmic pricing. iBuyers choose to intermediate in markets that are liquid and in which automated valuation models have low pricing error. These facts suggest that iBuyers’ speedy offers come at the cost of information loss concerning house attributes that are difficult to capture in an algorithm, resulting in adverse selection. We calibrate a dynamic structural search model with adverse selection to understand the economic forces underlying the tradeoffs of dealer intermediation in this market. The model reveals the central tradeoff to intermediating in residential real estate. To provide valuable liquidity service, transactions must be closed quickly. Yet, the intermediary must also be able to price houses precisely to avoid adverse selection, which is difficult to accomplish quickly. Low underlying liquidity exacerbates adverse selection. Our analysis suggests that iBuyers’ technology provides a middle ground: they can transact quickly limiting information loss. Even with this technology, intermediation is only profitable in the most liquid and easy to value houses. Therefore, iBuyers’ technology allows them to supply liquidity, but only in pockets where it is least valuable. We also find limited scope for dealer intermediation even with improved pricing technology, suggesting that underlying liquidity will be an impediment for intermediation in the future.
我们通过“iBuyers”(通过在线平台购买和销售住宅房地产的技术进入者)的视角,研究了住宅房地产交易中介中的摩擦。买家通过让家庭避免漫长的销售过程,为家庭提供流动性。他们卖房很快,赚取5%的差价。它们的价格可以用一个简单的享乐模型很好地解释,与它们使用的算法定价一致。买家选择在流动性强、自动估值模型定价误差小的市场中进行中间交易。这些事实表明,买家快速出价的代价是有关房屋属性的信息丢失,而这些信息难以用算法捕获,从而导致逆向选择。我们校准了一个具有逆向选择的动态结构搜索模型,以了解该市场中经销商中介权衡背后的经济力量。该模型揭示了住宅房地产中介的核心权衡。为了提供有价值的流动性服务,交易必须迅速结束。然而,中介还必须能够准确地为房屋定价,以避免逆向选择,这很难迅速完成。潜在流动性低加剧了逆向选择。我们的分析表明,iBuyers的技术提供了一个中间地带:他们可以快速交易,限制信息丢失。即使有了这种技术,中介也只能在流动性最强、最容易估值的房屋中获利。因此,iBuyers的技术允许他们提供流动性,但只在最不值钱的地方。我们还发现,即使定价技术得到改进,交易商中介的范围也有限,这表明潜在的流动性将成为未来中介的障碍。
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引用次数: 14
Get Cash to More Families that Need It Now: Give Banks More Discretion to Make Home Equity Loans and Refinance Mortgages 让更多的家庭现在就需要现金:给银行更多的自由裁量权来发放房屋净值贷款和再融资抵押贷款
Pub Date : 2020-03-19 DOI: 10.2139/ssrn.3564490
Kevin Erdmann
The economic dislocations caused by the coronavirus pandemic will almost certainly result in economic contraction. There have been calls for bold actions to attenuate the effects of this contraction and also to provide cash for struggling Americans whose incomes may be temporarily disrupted. But these actions, including direct cash payments to American households, will add to the federal deficit, and recent large fiscal deficits have tempered enthusiasm for immediate large federal outlays.

The pandemic will lead to a deep contraction that hopefully will be short. The more that national consumption can be smoothed during this time, especially for households that experience the largest temporary hits to their incomes, the quicker the recovery will be. There may be a way to allow American households to help themselves through this period and to lessen the need for more federal spending—by easing some of the restrictions on mortgage lending, to allow Americans to access their single largest asset: their homes. The nation is in the midst of an emergency, desperate for liquidity and for current sources of secured spending. It is worth considering the value of tapping this source of liquidity.
冠状病毒大流行造成的经济混乱几乎肯定会导致经济收缩。有人呼吁采取大胆行动,减轻经济收缩的影响,并为收入可能暂时中断的苦苦挣扎的美国人提供现金。但这些行动,包括直接向美国家庭支付现金,将增加联邦赤字,而最近的巨额财政赤字已经降低了对立即增加联邦支出的热情。大流行将导致深度收缩,希望这种收缩是短暂的。在这段时间内,国民消费越能得到平顺,尤其是那些收入暂时受到最大冲击的家庭,经济复苏就会越快。也许有一种方法可以让美国家庭在这段时间里自力更生,减少对更多联邦支出的需求——通过放松对抵押贷款的一些限制,让美国人获得他们唯一最大的资产:他们的房子。这个国家正处于紧急状态,迫切需要流动性和目前有保障的支出来源。利用这种流动性来源的价值值得考虑。
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引用次数: 0
Financial Flexibility and Manager–Shareholder Conflict: Evidence from Reits 财务弹性与经理人-股东冲突:来自Reits的证据
Pub Date : 2020-03-01 DOI: 10.1111/1540-6229.12226
Timothy J. Riddiough, Eva Steiner
We show empirically that the use of unsecured debt, whose standard covenants commit management to the preservation of debt capacity, leads to lower and more stable leverage. We then show that firm value is sensitive to leverage levels and leverage stability, decreasing in the former and increasing in the latter. Our results support a liquidity-centric version of Jensen's (1986) free cash flow argument. In this version, self-serving managerial tendencies are reigned in without raising leverage indiscriminately, so that financial flexibility is preserved.
我们的经验表明,使用无担保债务,其标准契约承诺管理层保持债务能力,导致更低和更稳定的杠杆。结果表明,企业价值对杠杆水平和杠杆稳定性敏感,前者降低,后者增加。我们的结果支持流动性中心版本的詹森(1986)的自由现金流的论点。在这种情况下,自私自利的管理倾向得到控制,而不会不加选择地提高杠杆率,从而保持了财务灵活性。
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引用次数: 23
Exploring Associations between Parking Occupancy Rate at Residential Estates and Spatial Characteristics. The Case of Ekaterinburg 住宅小区停车占用率与空间特征的关系探讨。叶卡捷琳堡事件
Pub Date : 2020-02-28 DOI: 10.2139/ssrn.3545934
Yegor Muleev
Financial losses due to low demand for parking spaces in garages at residential estates is a key motivation for this research. The purpose of this paper in particular is to statistically explore the relationship between parking occupancy rates and various factors on transport supply, characteristics of location and the building. The occupancy rate of parking was measured as the ratio of actual number of cars to total number of parking spaces. The fieldwork on counting occupied parking spaces was conducted 2 times per day during a week on a sample of 13 locations in different areas of a 1.4-million Yekaterinburg city in Russia. 4700 observed parking spaces give sample size of 173 records. Statistical analysis shows that the crow-fly distance to the city center as well as the number of public transport stops are strongly associated with occupancy rate for parking. Also, occupancy rate is much more affected by the type of parking ownership. Private owning means purchase of a parking space or renting it while public ownership suggests free access. So private parking means a 45% decline in occupancy compared to the public parking regime. Research provides empirical results and some theoretical underpinnings are also highlighted.
由于住宅小区车库停车位需求低而造成的经济损失是本研究的主要动机。本文的目的是统计探讨停车占用率与交通供应、位置特征和建筑物等各种因素的关系。停车占用率是用实际车辆数量与总停车位数量之比来衡量的。在俄罗斯叶卡捷琳堡市140万人口的不同地区的13个地点,对已占用停车位进行了为期一周的实地调查,每天进行两次。4700个观察到的停车位提供了173个记录的样本量。统计分析表明,到市中心的直线距离以及公共交通站点的数量与停车入住率密切相关。此外,入住率受停车位所有权类型的影响更大。私人拥有意味着购买或租用停车位,而公共拥有意味着免费使用。因此,与公共停车制度相比,私人停车意味着占用率下降了45%。研究提供了实证结果,并强调了一些理论基础。
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引用次数: 0
Selection, Leverage, and Default in the Mortgage Market 抵押贷款市场中的选择、杠杆和违约
Pub Date : 2020-02-28 DOI: 10.2139/ssrn.3315896
Arpita Gupta, Christopher Hansman
We ask whether the correlation between mortgage leverage and default is due to moral hazard (the causal effect of leverage) or adverse selection (ex ante risky borrowers choosing larger loans). We separate these information asymmetries using a natural experiment resulting from the contract structure of option adjustable-rate mortgages and unexpected 2008 divergence of indexes that determine rate adjustments. Our point estimates suggest that moral hazard is responsible for 40$%$ of the correlation in our sample, while adverse selection explains 60$%$. We calibrate a simple model to show that leverage regulation must weigh default prevention against distortions due to adverse selection.
我们问抵押贷款杠杆和违约之间的相关性是由于道德风险(杠杆的因果效应)还是逆向选择(事先高风险的借款人选择更大的贷款)。我们利用期权可调利率抵押贷款的合约结构和2008年决定利率调整的指数的意外背离所产生的自然实验分离了这些信息不对称。我们的点估计表明,在我们的样本中,道德风险对相关性的贡献率为40%,而逆向选择对相关性的贡献率为60%。我们校准了一个简单的模型,以表明杠杆监管必须权衡违约预防与逆向选择造成的扭曲。
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引用次数: 27
期刊
Real Estate eJournal
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