An Insurance Market Simulation With Both Adverse and Advantageous Selection

The theory of adverse selection predicts that high‐risk individuals are more likely to buy insurance than low‐risk individuals if asymmetric information regarding individuals’ risk type is present in the market. The theory of advantageous selection predicts the opposite—a negative relationship between insurance coverage and risk type can be obtained when hidden knowledge in other dimensions (e.g., the degree of risk aversion) is present in addition to the risk type. Using the heterogeneity of insurance buyers in either risk type or risk aversion, we first introduce a classroom‐based insurance market simulation game to show that adverse selection and advantageous selection can coexist. We then explain the underlying concepts using two methods: a mathematical framework based on expected utility theory and an empirical framework based on the results of the game itself. The game is easy to implement, reinforces textbook concepts by providing students a hands‐on experience, and supplements current textbooks by bringing their content up to date with current research.     

中国健康险市场逆向选择和正向选择并存现象的研究

本文以中国的健康险市场为例,考察不对称信息的影响。通过考察投保人投保金额以及附加险选择和索赔情况的相关关系,论文发现事后出现索赔的投保人,事前往往会选择购买附加险,但是投保金额却相对较低。结合理论模型分析,论文认为投保人在财富、风险偏好等方面的异质性以及信息不对称的存在是导致市场同时出现逆向选择和正向选择的主要原因。     

Adverse Selection and Competitive Market Making: Empirical Evidence from a Limit Order Market

This article presents a new methodology for testing economicrestrictions on the price schedules offered in a limit orderbook that are based on (i) break-even conditions for marginallimit orders and (ii) rational updating conditions for orderbook revisions over time. Using order flow data from the StockholmStock Exchange, I find strong evidence of insufficient depthin the limit order books relative to the theoretical predictions.An extended model, which allows the model parameters to dependon market conditions, captures some of the systematic variationin the observed order book depth.     

Institutions and Deposit Insurance: Empirical Evidence

Do banks’ responses to changes in deposit insurance vary across countries even if the countries have comparable institutions? If so, by how much? Using data on the financial performance of large banks in 15 financially and economically developed countries, we find that where deposit insurance has an effect, it is large and varies depending on the level of economic freedom, rule of law and corruption in the bank’s home country. As in prior papers, we show that during stable economic periods, increases in deposit insurance are associated with higher bank risk, both problem loans and leverage. In most, but not all, cases stronger institutions temper these effects. The institutions’ effects are substantial. For example, average changes in the rule of law double the impact of a change in deposit insurance on bank leverage. We contribute to the substantial literature in this area by showing that the institutional effects are significant even across a set of countries with comparable institutions; by conducting a careful calibration of the economic significance of the effects; by providing evidence that during stable periods changes in deposit insurance only affect bank risk and not other measures of performance; and finally by showing that the effects of both deposit insurance and institutions vary across stable and crisis economic periods. The stable period results are consistent with the moral hazard effects of deposit insurance, while the crisis period results are consistent with endogeneity concerns that poor bank performance could drive changes in regulations.     

Implied Volatility in the U.K. Commercial Property Market: Empirical Evidence Based on Transaction Data

The primary aim of this research is to compute implied volatility based on a stochastic contingent claim valuation model proposed by Dixit and Pindyck (1994). Over the sample period of 1984 to 1997, and with approximately 20,000 commercial property transactions in the United Kingdom, we find that implied volatility of rental returns is in the region of 24.83 percent. Over the same sample period, the historical and conditional standard deviations of the log returns of transaction-based rental series is estimated to be 15.60 percent and 35.64 percent, respectively. The tests of information content of these risk measures show that there is strong orthogonality in the information impounded in implied volatility estimates compared to that contained in historical standard deviations.     

On the Corporate Demand for Insurance: Evidence From the Global Reinsurance Market

In this article, we view the demand for reinsurance as a “special case” of the corporate demand for insurance. We analyze the extent to which reinsurance purchases by the global property–liability insurance industry vary across countries and assess the relative importance of country‐level factors compared with firm‐level factors. Using a data set consisting of 21,814 firm‐year observations from 33 (developed and developing) countries during the period 2000–2012, we find that after controlling for firm‐level factors, country‐level factors have economically as well as statistically significant effects on the demand for reinsurance.     

审计师选择与设立审计委员会的自选择问题——来自中国证券市场的经验证据

本文采用Heckman(1978)的二阶段回归方法,以2002-2006年我国证券市场上市公司为研究样本,在研究审计师选择的同时控制了设立审计委员会的自选择问题,并将公司设立审计委员会的实际情况与假设的相反情况进行对比,分析它们不同的审计师选择倾向,从而间接检验了审计委员会的治理效率。研究发现:自选择问题对审计师选择存在显著的影响。因此,拒绝了公司随机设立审计委员会的原假设;在控制自选择之后,回归方程中变量的斜率系数整体上存在显著差异;并且没有设立审计委员会的公司比设立审计委员会的公司更可能聘请四大会计师事务所。     

2021年我国商业养老保险市场调研分析

发展商业养老保险,建立我国养老保障第三支柱问题受到关注.为此课题组通过网络调查和实地调研相结合方式,对当前商业保险市场运行情况与居民对商业养老保险的需求情况等问题进行全面了解.调研对商业养老保险市场消费者、商保企业、政府三个层面存在的问题和原因进行了分析,并就发展商业养老保险市场提出针对性的政策建议.     

上海市商业保险密度的影响因素的实证研究

本文根据上海市1980-2007年之间的历史数据,采用多元线性逐步回归方法,构建人口机械增长率、劳保福利费用比例、全市居民消费水平指数、食品在社会消费品零售总额中的比重等自变量与因变量商业保险密度之间的数学模型,并对模型进行统计分析.     

Product Ratings as a Market Reaction to Deregulation: Evidence From the German Insurance Market

This study provides the first investigation of information markets as a reaction to deregulation of product forms in insurance markets. The article studies the case of Germany, where insurance product ratings entered the market after relaxation of product regulation in 1994. The ratings’ potential for enhancing the performance of a deregulated insurance market is analyzed by considering both market structure and governance characteristics of the rating market, since the theoretical literature predicts that both are important determinants of rating outcomes. Data from a unique panel data set containing disability insurance ratings from the three major rating agencies are also examined in light of theoretical predictions. Results suggest that market governance and competition characteristics are favorable for the production of unbiased and informative ratings. Ratings for disability insurance support this interpretation, since the characteristics of the ratings conform to theoretical predictions about ratings in well‐functioning rating markets.     

我国保险资金与资本市场相互关系实证研究

本文选择资本市场和保险资金市场具有代表性的时间序列数据进行实证研究,分析了我国保险资金与资本市场之间的Granger因果关系、长期均衡关系和短期波动情况,并结合实证研究的结果对我国保险资金投资运用和资本市场的发展提出了相关的建议。     

审计市场结构与审计质量:来自中国证券市场的经验证据

本文以我国证券市场2004年~2005年的上市公司为研究样本,使用调整后的KS模型估计出的公司操纵性应计利润的绝对值作为审计质量的衡量指标,考察了审计市场结构和审计质量的关系。研究发现在控制了影响审计质量的相关变量之后,市场结构与审计质量存在以下关系:审计市场集中度与审计质量成正相关关系;市场的进入退出壁垒越高,审计质量越高;但审计师的行业专长不但没有提高审计质量,反而在一定程度上降低了审计质量;审计市场的强地域性与审计质量也没有明显的相关关系。     

寿险企业市场风险相关性实证研究

本文通过采用时变Copula-GARCH-t模型对四家上市寿险企业的市场风险及其时变相关性进行建模,并将2008年次贷危机纳入研究的时间窗口,以考察寿险企业市场风险相关性在不同经济环境下的时变特征。实证研究结果表明,上述模型能够较为充分地描述现实情况,并且从中发现寿险企业间市场风险相关性明显地随时间变化而变化,在金融危机时期有较高的相关度,而在正常时期相关度则有所回落,而各寿险企业的这一变化趋势呈现出较高的一致性。     

Market Interest Rates and Commercial Bank Profitability: An Empirical Investigation

The widespread notion that commercial banks “borrow short and lend long” implies that sharp market interest rate increases may induce a significant number of banking failures. This paper develops a method for estimating average asset and liability maturities for a sample of large money center banks. Regression models are tested to determine if market rate fluctuations have a significant impact on bank profitability. The conclusion is negative: large banks have effectively hedged themselves against market rate risk by assembling asset and liability portfolios with similar average maturities.     

保险产品市场竞争、公司治理与绩效实证研究

公司治理绩效是衡量公司治理结构是否完善的重要标准。事实上,公司治理绩效不仅受到公司内部各个治理机制的影响,而且还会受到公司外部治理机制的影响。一个良好的公司治理结构依赖于内部机制与外部机制的有机结合。实证研究表明保险公司的公司治理与保险产品市场竞争具有显著的替代性。因此,尽管单个公司治理和保险产品市场竞争因素都是解释中国保险企业绩效的基本因素,但由于它们都只强调公司治理中的一个方面而忽略了可能存在的其他更加重要的内容,因而都是不完善的。公司治理和保险产品市场竞争两个方面都非常重要,因而都应得到足够的重视。     

货币政策与股票市场流动性风险——来自中国股票市场的经验证据

本文首先应用模型刻划了我国股票市场流动性变化特征,并以非预期流动性度量流动性风险:其次从货币供应量和利率两个方面,应用VAR模型分析了我国货币政策与流动性风险的关系.研究发现M2的变化对流动性风险影响最大,准M2、M1的变化次之,M0、准M1的变化最小;流动性风险对准Ml变化影响最大,对M1、M2变化次之,对准M2和M0变化几乎没有影响.利率与流动性风险相互影响很小.     

Measuring Selection Incentives in Managed Care: Evidence From the Massachusetts State Employee Insurance Program

Capitation gives insurers incentive to manipulate their offerings to attract the healthy and deter the sick. We calculate the incentives for such service-specific quality distortions using managed care medical and pharmacy spending data for fiscal years 2001 and 2002 from the Massachusetts State Employee Insurance Program. Services most vulnerable to stinting are cardiac care, diabetes care, and mental health and substance abuse services. Empirically, the financial temptation to distort service quality increases nonlinearly with supply-side cost sharing. Our empirical results highlight how selection incentives work at cross-purposes with efforts to reward excellent chronic disease management. Initiatives coupling pay-for-performance with risk adjustment and mixed payment hold promise for aligning incentives with quality improvement.     

Informational Cascade in the Insurance Market

We develop an informational cascade model based on Bikhchandani, Hirshleifer, and Welch (1992) with applications to the insurance market. We investigate the existence of cascades and the effects of public information on cascades. We apply the results to insurance markets to explain how catastrophic events may lead to demand increases, how loss shocks may lead to insurance cycles, and how the heterogeneity of policyholders affects the choice of limited tort auto insurance in Pennsylvania.     

住宅市场量价关系分析——基于香港数据的实证研究

本文基于滤波方法-9向量自回归模型，对香港十多年的住宅交易量和价格数据进行实证研究。结果显示，考察1996．1-1997．6区间的样本交易量与价格互为格兰杰因果关系，表现出正反馈效应，投机现象非常明显。但当选取1997．7-2007．7区间的样本则仅发现价格是交易量的格兰杰原因，并不存在双向因果关系。方差分解结果表明，交易量波动对于价格波动的影响要大于价格波动对于交易量的影响。