Advertising a second-price auction

This study examines a symmetric private-value second-price auction model in which the seller solicits bidders at a cost, sets a reserve price, and receives a payoff which is a convex combination of revenue and welfare. The bidder’s valuations are drawn from a distribution with a decreasing hazard rate and non-decreasing virtual valuations. We find that at equilibrium the seller adopts an advertising policy which minimizes the uncertainty over the number of participants, and sets a reserve price which only depends on the distribution of valuations and the weight on revenue in the objective function. A welfare-maximizing seller is shown to advertise more than a revenue-maximizing seller, and a ceteris paribus increase in the advertising level is proved to increase the expected winner’s rent.     

开放式基金在上升市场与下降市场中选时与选股能力的实证研究

选取我国10只开放式基金作为样本,根据它们的收益情况并联系市场背景,对它们基金管理人的选时与选股能力进行的实证研究表明,不同基金在市场上升和市场下降过程中所表现出来的选时能力指标和选股能力指标与整体指标并不相同.这一结论可用于基金整体性指标研究.     

《还乡》的神话原型解读

哈代在小说《还乡》中引用大量神话原型意象进行环境描写和人物塑造,尤其体现在小说背景埃格敦荒原氛围、男女主人公克林.约布赖特和尤苔沙的命运归属上。通过这些原型的应用,强化了该小说的悲剧性质。     

Banks’ equity performance and the term structure of interest rates

Using an extensive global sample, this paper investigates the impact of the term structure of interest rates on bank equity returns. Decomposing the yield curve to its three constituents (level, slope and curvature), the paper evaluates the time‐varying sensitivity of the bank's equity returns to these constituents by using a diagonal dynamic conditional correlation multivariate GARCH framework. Evidence reveals that the empirical proxies for the three factors explain the variations in equity returns above and beyond the market‐wide effect. More specifically, shocks to the long‐term (level) and short‐term (slope) factors have a statistically significant impact on equity returns, while those on the medium‐term (curvature) factor are less clear‐cut. Bank size plays an important role in the sense that exposures are higher for SIFIs and large banks compared to medium and small banks. Moreover, banks exhibit greater sensitivities to all risk factors during the crisis and post‐crisis periods compared to the pre‐crisis period; though these sensitivities do not differ for market‐oriented and bank‐oriented financial systems.     

意识形态对企业家人力资本的影响路径——以广东温氏食品集团为例

意识形态是社会存在反映,也是一种重要的非正式制度。在回顾意识形态与企业家关系的相关理论的基础上,分析意识形态对企业家人力资本的影响路径。研究认为,意识形态对企业家人力资本的影响也由此可依次分为三个阶段：企业家对意识形态感知的认识阶段;企业家理性判断是否将共有意识形态纳入已有认知结构的评价阶段;共有的意识形态转化为个性化意识形态的实现阶段。论文结合广东温氏集团案例,揭示意识形态影响企业家人力资本的阶段性路径特征,提出针对意识形态对企业家人力资本影响的阶段性特点的阶段性战略,认识阶段增强企业家角色偏好,评价阶段降低企业家对意识形态判断的交易成本,实现阶段打造企业家声誉等,以期从而促进企业家人力资本提升。     

个人投资者交易行为研究——来自台湾股市的证据

本文基于台湾股市数据,主要研究个人投资者的交易行为。参照Kaniel et al.(2008)构建了个人投资者交易不平衡性指标─净交易,以反映投资者股票交易的强度。采用这种交易不平衡性指标来构建投资组合研究个人投资者的交易行为。首先研究个人投资者交易和股票的收益之间的动态关系从而分析投资者的交易策略,然后研究个人投资者净交易的收益预测能力从而分析个人投资者交易的信息含量。本文研究发现:台湾股票市场的个人投资者采用负反馈的交易策略,并且个人投资者在交易中表现出很强的处置效应;个人投资者在交易中的信息含量不足;个人投资者交易中的盈利主要来自两个方面:过度反应和价格冲击。文章最后给出政策建议。     

投资者关注与IPO异象——来自网络搜索量的经验证据

利用谷歌趋势提供的搜索量数据,本文构建了一个投资者关注的直接衡量指标,在此基础上,运用行为金融学里投资者关注的理论,系统解释了IPO市场存在的三种异象。与文献中常见的其他解释变量相比,本文发现IPO前个股网络搜索量对于市场热销程度、首日超额收益和长期表现有更好的解释力和预测力,它可以解释首日超额收益的23%,长期累积收益率的10%以上,结果均十分显著。研究结果表明,投资者关注对资产价格有直接的影响,2009年的新股发行体制改革对首日超额收益的降低起到了明显作用。     

出口开放、地区市场规模和经济增长

报酬递增是跨国或区域经济增长发散的重要动因,而市场范围的大小则决定了报酬递增的程度。本文的实证研究发现,地区市场规模和出口开放程度显著地影响了1970—2000年各省区人均收入的增长速度;在地区差距的形成和演进过程中,国外和地区市场是相互替代的,而一旦控制了市场规模因素,各个省区即呈现明显的收敛趋势。本文根据地理特征构造工具变量,有效地控制了变量的内生性问题。     

风险溢价、预期损失与预测贷款损失准备金

在信贷市场完全信息的假设下,以贷款风险溢价为基础计提的贷款损失准备金能够完全覆盖贷款预期损失.而在经济或行业处于繁荣或上升时期,银行扩张贷款总量、增加长期贷款、放松贷款标准的行为,实际上低估了贷款预期损失.应用马尔科夫链预测理论构建的预测贷款准备金模型,克服了预期现金流折现法、动态准备金法和压力测试准备金法存在的实施难度大、监管制约等缺陷,能够保持银行经营的稳定以及客观地反映盈利状况,可以作为改革贷款准备金政策的参考.     

Forecasting value at risk and expected shortfall with mixed data sampling

I propose applying the Mixed Data Sampling (MIDAS) framework to forecast Value at Risk (VaR) and Expected shortfall (ES). The new methods exploit the serial dependence on short-horizon returns to directly forecast the tail dynamics of the desired horizon. I perform a comprehensive comparison of out-of-sample VaR and ES forecasts with established models for a wide range of financial assets and backtests. The MIDAS-based models significantly outperform traditional GARCH-based forecasts and alternative conditional quantile specifications, especially in terms of multi-day forecast horizons. My analysis advocates models that feature asymmetric conditional quantiles and the use of the Asymmetric Laplace density to jointly estimate VaR and ES.