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1.
异质性财富偏好和资产定价 总被引:1,自引:0,他引:1
Bakshi和Chen(1996)在代表性投资者经济中提出了基于财富偏好的资产定价模型。本文研究了在异质性投资者经济中财富偏好对资产定价的影响。如果风险资产的价格服从几何布朗运动,那么资产市场具有两基金分离现象。本文首先证明了基于风险基金的资产定价模型,然后使用该模型证明了如果定价的基准是单个的投资者的最优消费和财富时,那么基于财富偏好的资产定价模型成立。但是,当定价的基准是总消费和总财富时,基于财富偏好的资产定价模型不能成立。也就是,不能在异质投资者经济中将Breeden(1979)的经典CCAPM模型推广到包含财富偏好的资产定价模型。 相似文献
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Bakshi和Chen(1996)在代表性投资者经济中提出了基于财富偏好的资产定价模型。本文研究了在异质性投资者经济中财富偏好对资产定价的影响。如果风险资产的价格服从几何布朗运动,那么资产市场具有两基金分离现象。本文首先证明了基于风险基金的资产定价模型,然后使用该模型证明了如果定价的基准是单个的投资者的最优消费和财富时,那么基于财富偏好的资产定价模型成立。但是,当定价的基准是总消费和总财富时,基于财富偏好的资产定价模型不能成立。也就是,不能在异质投资者经济中将Breeden(1979)的经典CCAPM模型推广到包含财富偏好的资产定价模型。 相似文献
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本文构造了基于财富和习惯的消费—资产组合投资模型,其中代表性投资者的效用函数不但依赖于投资者的消费历史,还依赖于其财富水平。本文所提出的模型是对Merton(1971)、Bakshi和Chen(1996)、Sundaresan(1989)和Constantinides(1990)的消费—资产组合投资模型的推广。我们使用随机动态规划求解模型,并给出了最优的消费和组合投资规则。我们使用此模型计算了消费与财富的波动率,发现习惯形成和较弱的财富偏好均能导致更加平滑的消费行为,从而解释了消费平滑之谜。 相似文献
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财富偏好、习惯形成和消费与财富的波动率 总被引:3,自引:0,他引:3
本构造了基于财富和习惯的消费一资产组合投资模型。其中代表性投资的效用函数不但依赖于投资的消费历史,还依赖于其财富水平。本所提出的模型是对Merton(1971)、Bakshi和Chen(1996)、Sundaresan(1989)和Constantinides(1990)的消费一资产组合投资模型的推广。我们使用随机动态规划求解模型。并给出了最优的消费和组合投资规则。我们使用此模型计算了消费与财富的波动率,发现习惯形成和较弱的财富偏好均能导致更加平滑的消费行为,从而解释了消费平滑之谜。 相似文献
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中国居民消费、习惯偏好与资产收益研究 总被引:1,自引:0,他引:1
王立平 《中南财经政法大学学报》2007,(1):37-41
习惯模型是行为资产定价理论的重要组成部分,该模型将经济主体的习惯因素纳入到资产定价之中,由此推进了消费资本资产定价理论的发展。习惯模型已经在欧美等国家和地区得到了广泛研究,而在资本市场蓬勃发展的中国则处于被人遗忘的尴尬境地。本文利用外在习惯偏好模型对我国居民消费、习惯偏好与资产收益进行分析。GMM结果是混合性的,模型可以较好地拟合数据,GMM结果无法否定外在习惯偏好模型,因而无法否定习惯因素在消费与资产收益分析中的重要性。 相似文献
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人口年龄结构是影响金融市场风险结构的重要因素。本文从投资者的效用函数出发,通过引入不同年龄投资者收入和消费等因素的变化,建立风险规避系数的动态模型,发现决策者的年龄对风险偏好有显著影响。通过微观和宏观两个维度的实证分析,研究结论表明:微观层面投资者的年龄与市场参与及投资组合风险偏好负相关,且投资者性别与受教育程度起到一定调节作用。宏观层面15-64岁人口占比越高,风险偏好和投资偏好越高;0-14岁和65岁及以上人口占比则对风险偏好和投资偏好有负向影响。本文从人口学视角为研究长期金融稳定提供了新思路,同时为中国金融市场供需平衡、良性发展提供参考和建议。 相似文献
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本文利用2005~2008年深圳A股市场的数据,对各类投资者的交易偏好及其差异、交易偏好与股价波动的关系进行了实证研究。结果表明:(1)机构投资者比个人投资者更偏向于交易大盘股、高价股、低市盈率股和非ST股。各类个人和机构之间的交易偏好存在显著的差异,其中月末平均持股市值在100万元以下的个人投资者对小盘股、低价股、高市盈率股、ST股的偏好程度比其他个人投资者高;(2)无论是按规模、价格、市盈率、是否ST股对股票进行分类后利用Panel固定效应模型,还是应用一般回归模型进行分析,结果都表明,个人交易偏好程度高的股票的波动大于偏好程度低的股票,而机构投资者则相反;在大部分同类型股票中,个人和机构交易量的增加均会强化股价波动,但机构投资者交易量变化对收益波动的影响系数远大于个人。个人投资者的交易偏好及其对波动的影响显示其面临的风险可能较大.加强投资者教育、培养专业化理财队伍并鼓励个人通过专业机构进行投资显得尤为重要。 相似文献
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基于2018年中国家庭追踪调查数据(CFPS),本文运用Probit模型、Logit模型以及Tobit模型研究了我国中老年家庭风险偏好对商业保险购买行为的影响,发现风险偏好与商业保险购买行为之间存在正向关系,三种模型的系数分别为:0.0955、0.1509、0.0353(保费占比)、0.7649(保费支出).结论:在我国中老年家庭里,风险偏好得分更高的家庭商业保险持有度更高.但这不符合传统理论,究其原因主要是反向因果关系、投资型而非保障型保险销售比例高、风险偏好型家庭组的人均收入更高.同时中老年家庭大量购买风险较高的投资型保险,会加大中老年家庭的财务风险,需要密切关注. 相似文献
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文章基于跨期替代资产选择理论,建立了一个较符合我国实际的模型,并结合相关经济数据,将其用以分析我国消费增长问题.研究结果发现:(1)提高跨期替代弹性是解决我国消费不足问题的关键;(2)通过减少个体风险偏好或提高其对社会地位的重视程度来增加消费的方法在理论上并不可行;(3)通过减少贫富差距来减少社会地位因素的受重视程度,可能对刺激消费有一定作用. 相似文献
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近年来,DC型养老金在我国得到了长足发展。DC型养老金的积累期长达数十年,如何通过有效的资产配置,实现参保人更高的养老效用是理论界和实务界都关注的问题。本文在默顿(Merton)连续时间最优投资-消费问题框架下,建立了DC型养老金最优资产配置问题的随机优化模型。以此为基础,本文研究了生命周期、风险偏好和积累水平对养老金积累期最优资产配置策略的影响。进而,通过Monte Carlo模拟,本文研究了最优资产配置策略与恒定资产配置比例策略下养老金积累效果的优劣。本文的结论证明,在放开DC型养老金投资限制的条件下,引入“生命周期基金”和“生命特征基金”,引导最优资产配置很有必要。 相似文献
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Summary. This research studies the role of multivariate distribution structures on random asset returns in determining the optimal
allocation vector for an expected utility maximizer. All our conclusions pertain for the set of risk averters. By carefully
disturbing symmetry in the distribution of the, possibly covarying, returns, we ascertain the ordinal structure of the optimized
allocation vector. Rank order of allocations is also established when a permutation symmetric random vector is mapped into
the returns vector through location and scale shifts. It is shown that increased dispersion in the vectors of location and
scale parameters benefit, ex-ante, investors as does a decrease in the rank correlation coefficient between the location and
scale parameter vectors. Revealed preference comparative static results are identified for the location and scale vectors
of asset returns. For most issues addressed, we arrive at much stronger inferences when a safe asset is available.
Received: August 8, 2000; revised version: January 8, 2001 相似文献
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行为资产定价理论综述 总被引:37,自引:4,他引:33
如何刻画投资者行为是资产定价理论 50年来发展的主要脉络。在消费资本资产定价模型基础上 ,通过修正投资者的效用函数而发展起来的行为资产定价理论 ,对投资者行为的认识达到了新的高度。本文构造了行为资产定价的一般均衡研究框架 ,指出了此框架与行为金融理论的区别 ,并在此框架下 ,综述了当前流行的行为资产定价模型。文章最后分析了行为资产定价理论的下一步发展方向。 相似文献
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Efe A. Ok 《Journal of Economic Theory》2002,104(2):429-449
We consider the problem of representing a (possibly) incomplete preference relation by means of a vector-valued utility function. Continuous and semicontinuous representation results are reported in the case of preference relations that are, in a sense, not “too incomplete.” These results generalize some of the classical utility representation theorems of the theory of individual choice and paves the way towards developing a consumer theory that realistically allows individuals to exhibit some “indecisiveness” on occasion. Journal of Economic Literature Classification Number: D11. 相似文献
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Shiyu Bo 《Applied economics》2018,50(45):4830-4846
This article investigates the effect of children’s gender on parents’ time allocation in developing countries due to the long-existing tradition of son preference. A collective model generates predictions concerning the impact of the birth of sons on family behaviour when son preference is treated as a premium in the father’s utility function. Using data from China, I show that, with more sons instead of daughters, the time spent by both men and women on housework rises, while men have to increase their work time in the labour market and women can reduce theirs. The results are consistent with theoretical predictions and are robust for use in further tests. For the possible endogeneity of children’s gender, I use the law forbidding the use of ultrasound-B to reveal the gender of a foetus as instrumental variables as the identification strategy. 相似文献
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In seeking to value environmental amenities and public goods, individuals often have trouble trading off the (vague) good
or amenity against a monetary measure. Valuation in these circumstances can best be described as fuzzy in terms of the amenity
being valued, perceptions of property rights, and the numbers chosen to reflect values. In this paper, we apply fuzzy logic
to contingent valuation, employing a fuzzy clustering approach for incorporating preference uncertainty obtained from a follow-up
certainty confidence question. We develop a fuzzy random utility maximization (FRUM) framework where the perceived utility
of each individual is fuzzy in the sense that an individual’s utility belongs to each cluster to some degree. The model is
then applied to a Swedish survey that elicited residents’ willingness to pay for enhanced forest conservation and to a Canadian
survey of agricultural landowners that elicited their willingness to accept compensation for a tree planting program. Both
the WTP and WTA measures we obtain using the fuzzy approach are well below those obtained using standard probability methods.
Based on goodness of fit measures and Monte Carlo experimentation, a case can be made for using a fuzzy preference approach
for modeling preference uncertainty as opposed to incorporating respondent uncertainty within the random utility maximization
framework.
相似文献
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Preference Anomalies,Preference Elicitation and the Discovered Preference Hypothesis 总被引:1,自引:1,他引:1
There is wide-ranging evidence, much of it deriving from economics experiments, of ‘anomalies’ in behaviour that challenge
standard preference theories. This paper explores the implications of these anomalies for preference elicitation methods.
Because methods that are used to inform public policy, such as contingent valuation, are based on standard preference theories,
their validity may be called into question by the anomaly data. However, on a new interpretation, these anomalies do not contradict
standard theory but are errors in stated preference that can be expected to disappear as people become more experienced in
relevant decision environments. We explore the evidence for this interpretation and what implications follow for preference
elicitation methodology.
JEL classifications: C91, D01, D60, D81, D83, H40 相似文献