• 详情 散户投资盈利策略可以模仿吗?-----一个案例分析
    散户投资者是中国股市参与人的主体,他们的投资行为受着报刊投资建议的很大影响.为了分析散户投资者的投资行为和业绩,本文采用案例研究的方法,研究了文献很少涉及的一种报刊投资建议------个体投资者投资日记.本文选取了《成都商报》1999年1月9日至4月30日连载的“道达投资手记”作为样本,构造了模仿型投资策略,研究了样本时间段内该策略的获利可能性.结果发现,机械模仿进行投资的收益无法达到原投资建议战胜大盘的水平,业绩基本与大盘走势持平. 针对这一结果,我们讨论了投资策略的一些改进方法,定性地得到结论:以“投资手记”为基础进行的有一定灵活性的投资策略业绩将大大改善,有可能战胜大盘. 最后我们分析了该结论所蕴涵的意义和本文研究方法改进的思路与扩展的方向.
  • 详情 Art as an Investment and the Underperformance of Masterpieces
    This paper constructs a new data set of repeated sales of artworks and estimates an annual index of art prices for the period 1875-2000. Contrary to earlier studies, we find art outperforms fixed income securities as an investment, though it significantly under-performs stocks in the US. Art is also found to have lower volatility and lower correlation with other assets, making it more attractive for portfolio diversification than discovered in earlier research.There is strong evidence of underperformance of masterpieces, meaning expensive paintings tend to under-perform the art market index. The evidence is mixed on whether the "law of one price" holds in the New York auction market.
  • 详情 基于股票市场动态均衡模型的投资者行为分析
    本文在微观层面建立了股票市场动态均衡模型,并基于动态均衡模型,探讨了投资者投资行为的理性或非理性在市场结构中的演绎过程,同时给出了股票市场理性投资行为与非理性投资行为发生偏差的度量模式。最后,基于q-理论,研究了投资者行为与 IS-LM模型均衡点运动的关系。
  • 详情 基金投资风格和基金分类的实证研究
    本文先按照其投资目标、投资风格和投资策略等特征为标准的划分方式,对我国现有的基金进行实证分析和检验,评价其分类特征是否符合基金招募书上宣称的基金类型,评价其效率是否达到了既定的投资目标。实证结果发现,无论事前分析和事后分析都表明,我国基金的投资风格趋于相同,而且宣称的投资风格在很大程度上不能代表其实际的投资风格。本文最后还分析了导致这种现象出现的原因。
  • 详情 收益不确定、控股股东风险厌恶与财务保守行为
    企业财务保守行为近年来在融资行为和资本结构研究中受到关注。本文考虑在竞争导致收益不确定,公司控股股东风险厌恶,外部投资者风险中性的条件下,建立了一个单阶段单目标融资决策模型,试图解释企业财务保守行为。本模型说明,财务保守行为可能是企业控股股东基于企业长期生存和发展、运营风险最小化的战略行为,而不仅仅是资本成本最小化的单纯的财务行为。不能把财务保守都视为不合理行为。
  • 详情 银行内部职工犯案分析
    近年来,经济案件在银行屡屡发生,其中一个令人深思的现象,就是银行案件中,银行内部职工犯案率大幅上升,据有关部门统计的经济案件中,与银行行内人员有关的案件高达80%以上,其中,60%是银行内部职工所犯,30%是属内外勾结,银行内部职工犯案频生,使银行的信誉受到极大的损害。本文就此进行分析
  • 详情 股市力学分析
    《股市力学分析》从股市中的个股入手,认真分析探讨了股票涨跌的深层次的原动力,通过建立合理的物理模型――谐振子模型,从而将股市的技术分析纳入到牛顿力学的框架之中。并运用波的传播原理及高等数学中曲线求极值的方法,推导出股价移动均线出现拐点的重要关系式:P{T}=P{T-N}。文章中阐述的各种均线参照系相互间转换的概念以及各参照系外力合成的有效处理方法,都是以往股市的技术分析理论从未有过的,而且是十分有效的预测股价运动方向和趋势的科学方法。
  • 详情 股票发行市场管制放松与市场萎缩“悖论”
    本文建立了一个投资者-上市公司-监管者三方主体的模型,考察了中国股票发行市场化改革的历史和市场影响,说明管制放松为何会导致市场萎缩,以及监管政策变化如何导致市场波动。由于监管机构需要平衡发行公司和短期投机者两方面利益,权衡他们的轻重缓急。监管机构一方面有很强的动力放宽标准,实现发行市场化,支持企业通过股票市场获得社会资金;另一方面,为了吸引投资者参与股票市场,同时还要维持社会政治安定,监管机构又必须给投资者必要的利益保护和激励。两个截然相反的目标,造成管制标准波动。这种关注一时的稳定,放弃明确的原则的监管思路,导致监管政策本身的摇摆不定。形成“一放就乱,一收就死”的循环机制和动态均衡。本文的结论是:在股票市场参与者结构没有太大改变的情形下,过度放松管制可能导致市场的萎缩,实现从行政监管向市场化监管平稳过渡,需要同时改造上市公司结构和股票市场投资者结构,超常规发展机构投资者和大盘股。
  • 详情 Deduction of Initial Strategy Distributions of Agents in Mix-game Model
    This paper reports the effort of deducing the initial strategy distributions of agents in mix-game model which is used to predict a real financial time series generated from a target financial market. Using mix-game to predict Shanghai Index, we find the time series of prediction accurate rates is sensitive to the initial strategy distributions of agents in group 2 who play minority game, but less sensitive to the initial strategy distributions of agents in group 1 who play majority game. And agents in group 2 tend to cluster in full strategy space (FSS) if the real financial time series has obvious tendency (upward or downward), otherwise they tend to scatter in FSS. We also find that the initial strategy distributions and the number of agents in group 1 influence the level of prediction accurate rates. Finally, this paper gives suggestion about further research.
  • 详情 Optimal Consumption and Portfolio Choices with Risky Housing and Stochastic Labor Income
    We investigate the optimal dynamic consumption, housing and portfolio decisions for an investor who receives stochastic labor income and acquires housing services from either renting or owning a house. We find that the investor prefers owning to renting to take advantage of lower owning cost when not liquidity?constrained. More important, when indi®erent between owning and renting, the homeowner holds a higher equity proportion in his liquid financial portfolio (bond and stock), yet a lower equity proportion in his total financial wealth (stock, bond and home equity) than the renter. Further, having the opportunity to own a house tilts a renter’s portfolio towards safe asset, while being able to rent housing services induces a homeowner to increase his stock holding. Denying investors access to either the house owning or rental market can lead to large welfare costs. Empirical evidence from the 1998 Survey of Consumer Finance data is broadly consistent with our theoretical predictions.