Pairwise epistemic conditions for Nash equilibrium

We introduce a framework for modeling pairwise interactive beliefs and provide an epistemic foundation for Nash equilibrium in terms of pairwise epistemic conditions locally imposed on only some pairs of players. Our main result considerably weakens not only the standard sufficient conditions by Aumann and Brandenburger (1995), but also the subsequent generalization by Barelli (2009). Surprisingly, our conditions do not require nor imply mutual belief in rationality.     

Vacationers and the economic “double dip” in Europe

The subject of this study concerns individual vacationers' reactions to the global economic crisis. This crisis is lasting longer than expected, resulting in Europe in a “double dip”. Vacationers can use different strategies to cope with this crisis: from pruning (giving up the vacation) via cheese-slicing (economizing on vacation attributes) to non-economizing. Based on a theoretical framework, it was predicted that over time the pruning segment would become larger than the cheese-slicing segment. A longitudinal study in The Netherlands, covering 4 years, shows economic developments having a relatively minor effect on vacationers' holiday plans and intentions, with no increase in the size of the pruning segment. Six vacationer segments were found, three of which can be considered to be crisis-resistant. Each segment pursues different economizing strategies, with each requiring a customized marketing strategy. Five explanations are proposed for the relatively limited influence of the economic “double dip” on Dutch vacationers. Future research can be directed to comparing vacations with other consumer products, in order to explain the crisis-resistance of vacation planning during this economic crisis.     

The tactical and strategic value of hedge fund strategies: a cointegration approach

This paper analyzes long-term comovements between hedge fund strategies and traditional asset classes using multivariate cointegration methodology. Since cointegrated assets are tied together over the long run, a portfolio consisting of these assets will have lower long-term volatility. Thus, if the presence of cointegration lowers uncertainty, risk-averse investors should prefer assets that are cointegrated. Long-term (passive) investors can benefit from the knowledge of cointegrating relationships, while the built-in error correction mechanism allows active asset managers to anticipate short-run price movements. The empirical results indicate there is a long-run relationship between specific hedge fund strategies and traditional financial assets. Thus, the benefits of different hedge fund strategies are much less than suggested by correlation analysis and portfolio optimization. However, certain strategies combined with specific stock market segments offer portfolio managers adequate diversification potential, especially in the framework of tactical asset allocation.

股票基金红利再投资比例的实证研究

开放式基金"红利再投资比例"指的是基金分红时,投资者以红利再投资方式进行的收益分配占总收益分配的比例。红利再投资比例的研究可以为基金制定正确的分红策略提供依据。文章通过对股票型开放式基金红利再投资比例的研究,发现基金份额、基金存续时间与基金红利再投资比例正相关。这说明基金持有人对基金管理人越有信心,基金持有人投资基金的时间越长,则选择红利再投资的可能性就越大。     

延迟退休、个人账户调整与城镇职工医疗保险基金可持续运行

文章通过构建精算模型,从城镇职工医疗保险基金可持续运行的角度对不同延迟退休和个人账户调整方案及组合进行模拟评估。研究发现:现行制度下城镇职工医疗保险统筹基金面临支付风险,延迟退休仅能够在短期内缓解城镇职工医疗保险基金的支付压力;仅依靠延迟退休难以在长期内缓解城镇职工医疗保险基金的支付压力,运用“延迟退休+个人账户调整”的模式,即在延迟退休的基础上对个人账户进行调整,更有利于基金的长期稳定运行。在现行退休制度下,建议取消个人账户,将单位缴费和个人缴纳的费用计入统筹账户,城镇职工医疗保险基金的单位缴费率可以下调1%;在延迟退休政策势在必行的情况下,建议在男性和女性不同岁退休的基础上,取消个人账户,实现城镇职工医疗保险单位缴费率降低2%。这样既有利于基金的可持续运行,也可以保证基金的运行效率,更能加强城镇职工医疗保险制度的互助共济性。     

公募基金与阳光私募基金经理的投资能力实证分析

我国公募基金与阳光私募基金的发展从20世纪80年代末至今得到了长足的发展。主要采用TM模型和HM模型对基金经理的选股能力和择时能力进行了对比分析,总体来看,私募基金经理的投资能力优于公募基金经理。当用成功概率法进行辅助性验证的时候,发现两种激励模式下基金经理对市场方向的预测和判断基本相当,公募基金经理还略胜一筹。分析结果,我国基金行业基金经理的投资能力不具备显著的差异,投资业绩的差异关键在于对仓位的控制以及策略的灵活性。     

企业研发费用加计扣除政策的实施现状分析与对策建议——以宁波市为例

《企业研究开发费用加计扣除管理(试行)的通知》对鼓励企业自主创新取得了积极的作用。文中以宁波为例分析了企业研发费用加计扣除政策的实施现状,并从政府和企业两个层面提出了改进的对策建议。     

中国房地产开发及投资经济效应分析

房地产业在我国国民经济中处于举足轻重的地位,房价的大幅涨跌都会对经济运行造成严重影响。从微观角度,通过对地产开发成本费用的分析,发现以地价和税收为主的整个政府性费用支出占到了房地产开发费用支出的近50%,而房地产开发所得的销售收入中也有近1/3以上的销售收入流向政府。因此,抑制过热的房地产市场,控制不断高涨的房地产价格,政府肩负重要责任。从宏观角度,通过对辽宁省2005年一季度到2010年底二季度的GDP数据以及房地产投资季度数据的定量分析,发现房地产投资与经济增长之间的长期弹性为0.48,存在长期均衡关系。     

中国股票型基金业绩持续性实证研究

本文采用动量检验法和回归系数法,检验了存续时间超过24个月的中国股票型基金业绩是否存在持续性.结果发现,101只样本基金的业绩在6个月存在显著的持续性.在此基础上,本文从风险收益和基金管理人能力两个角度检验了基金业绩持续性的来源,结果发现,CAPM和“三因素模型”,以及考虑了基金投资风格的管理人选股能力、择时能力及投资风格持续收益,均不能解释中国股票型基金的业绩持续性.     

金融市场不完全的理论分解与测度研究——基于中国封闭式基金折价的动态考察

基于金融市场不完全的结构分解,文章构建了一个涵盖市场交易费用、套利定价机制不完备程度和行为金融学因素的封闭式基金折价机理模型,分阶段计量分析发现:(1)普通交易成本因素影响基金折价约6.1%;(2)2007年前股指期货缺位因素导致基金折价约25.6%,之后随着股指期货的正式推出该影响显著下降;(3)市场套利定价机制不完备程度测度表明,该因素影响基金平均折价三个阶段分别为8.26%、5.87%和7.91%;(4)时期固定效应表明,有5个季度因投资者情绪相对乐观而降低了基金的平均折价率。