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1.
This paper considers a lifetime asset allocation problem with both idiosyncratic and systematic mortality risks. The novelty of the paper is to integrate stochastic mortality, stochastic interest rate and stochastic income into a unified framework. An investor, who is a wage earner receiving a stochastic income, can invest in a financial market, consume part of his wealth and purchase life insurance or annuity so as to maximize the expected utility from consumption, terminal wealth and bequest. The problem is solved via the dynamic programming principle and the Hamilton–Jacobi–Bellman equation. Analytical solutions to the problem are derived, and numerical examples are provided to illustrate our results. It is shown that idiosyncratic mortality risk has significant impacts on the investor’s investment, consumption, life insurance/annuity purchase and bequest decisions regardless of the length of the decision-making horizon. The systematic mortality risk is largely alleviated by trading the longevity bond. However, its impacts on consumption, purchase of life insurance/annuity and bequest as well as the value function are still pronounced, when the decision-making horizon is sufficiently long.  相似文献   

2.
In this paper, we characterize dynamic investment strategies that are consistent with the expected utility setting and more generally with the forward utility setting. Two popular dynamic strategies in the pension funds industry are used to illustrate our results: a constant proportion portfolio insurance (CPPI) strategy and a life-cycle strategy. For the CPPI strategy, we are able to infer preferences of the pension fund’s manager from her investment strategy, and to exhibit the specific expected utility maximization that makes this strategy optimal at any given time horizon. In the Black–Scholes market with deterministic parameters, we are able to show that traditional life-cycle funds are not optimal to any expected utility maximizers. We also prove that a CPPI strategy is optimal for a fund manager with HARA utility function, while an investor with a SAHARA utility function will choose a time-decreasing allocation to risky assets in the same spirit as the life-cycle funds strategy. Finally, we suggest how to modify these strategies if the financial market follows a more general diffusion process than in the Black–Scholes market.  相似文献   

3.
This paper examines the role conviction plays in asset management and its relationship with investment returns. We measure the strength of fund manager conviction through a fund's Active Share, i.e., the extent to which an investment portfolio differs from its benchmark index. First, we show fund manager conviction increases following both superior and, surprisingly, inferior past performance, and more so among solo-managed than team-managed funds. Second, and more importantly, we find an inverse-U relationship between conviction and subsequent performance. High levels of conviction proxied by high Active Share are associated with lower future returns and greater fund risk. Our study also illustrates an asymmetric investor reaction to fund manager conviction in the form of higher (lower) fund inflows rewarding good performance by high (low) conviction managers, but no pronounced penalties for poor performance, ceteris paribus.  相似文献   

4.
Polynomial goal programming (PGP) is a flexible method that allows investor preferences for different moments of the return distribution of financial assets to be included in the portfolio optimization. The method is intuitive and particularly suitable for incorporating investor preferences in higher moments of the return distribution. However, until now, PGP has not been able to meet its full potential because it requires quantification of “real” preference parameters towards those moments. To date, the chosen preference parameters have been selected somewhat “arbitrarily”. Our goal is to calculate implied sets of preference parameters using investors’ choices of and the importance they attribute to risk and performance measures. We use three groups of institutional investors—pension funds, insurance companies, and endowments—and derive implied sets of preference parameters in the context of a hedge fund portfolio optimization. To determine “real” preferences for the higher moments of the portfolio return distribution, we first fit implied preference parameters so that the PGP optimal portfolio is identical to the desired hedge fund portfolio. With the obtained economically justified sets of preference parameters, the well-established PGP framework can be employed more efficiently to derive allocations that satisfy institutional investor expectations for hedge fund investments. Furthermore, the implied preference parameters enable fund of hedge fund managers and other investment managers to derive optimal portfolio allocations based on specific investor expectations. Moreover, the importance of individual moments, as well as their marginal rates of substitution, can be assessed.  相似文献   

5.
We consider the problem of how an individual can use term life insurance to maximize the probability of reaching a given bequest goal, an important problem in financial planning. We assume that the individual buys instantaneous term life insurance with a premium payable continuously. We allow the force of mortality to vary with time, which, as we show, greatly complicates the problem.  相似文献   

6.
The fee structure used to compensate investment advisers iscentral to the study of fund design, and affects investor welfarein at least three ways: (i) by influencing the portfolio-selectionincentives of the adviser, (ii) by affecting risk-sharing betweenadviser and investor, and (iii) through its use as a signalof quality by superior investment advisers. In this paper, wedescribe a model in which all of these features are present,and use it to compare two popular and contrasting forms of feecontracts, the "fulcrum " and the "incentive " types, from thestandpoint of investor welfare. While the former has some undeniablyattractive features (that have, in particular, been used byregulators to justify its mandatory use in a mutual fund context),we find surprisingly that it is the latter that is often moreattractive from the standpoint of investor welfare. Our modelis a flexible one; our conclusions are shown to be robust tomany extensions of interest. The results are also extended toconsider unrestricted fee structures and competitive marketsfor fund managers.  相似文献   

7.
Hedge funds often impose lockups and notice periods to limit the ability of investors to withdraw capital. We model the investor's decision to withdraw capital as a real option and treat lockups and notice periods as exercise restrictions. Our methodology incorporates time-varying probabilities of hedge fund failure and optimal early exercise. We estimate a two-year lockup with a three-month notice period costs approximately 1% of the initial investment for an investor with constant relative risk aversion utility and risk aversion of three. The cost of illiquidity can easily exceed 10% if the hedge fund manager can arbitrarily suspend withdrawals.  相似文献   

8.
相对业绩差距评估对基金经理风险承担的激励研究   总被引:1,自引:1,他引:0  
基金经理在选择投资组合风险时,不仅会考虑基金的业绩排名,同时会考虑基金业绩之间的差距,由此提出了业绩差距排名,并提出了新的实证方法,即线性回归的方法来研究业绩差距排名对基金经理风险承担的影响,同时验证了BHS结论在中国基金市场中的适用性。结果表明BHS结论在中国基金市场中是不成立的,同时表明在中国基金市场中基金经理具有相对业绩排名目标,但此相对业绩排名是本文中所提出的业绩差距排名,此结论可以为监管部门规范基金投资行为以及为投资者选择基金提供参考。  相似文献   

9.
李凤  吴卫星  李东平  路晓蒙 《金融研究》2023,511(1):150-168
投资者教育是保障资本市场平稳运行、良性发展的重要举措,也是我国资本市场重要的基础性制度建设。本文利用20000多份全国公募基金个人投资者调查数据,分析了投资者教育对基金投资收益的影响,并基于行为金融学框架探究了其背后的作用机制。以往文献研究表明,金融知识水平对投资收益会产生显著影响,本文研究发现,获取金融知识的渠道也会影响投资收益。相对于自己学习金融知识、相关工作经验累积金融知识、向亲戚朋友学习金融知识,投资者教育(如参加金融机构的投资教育活动、接受金融经济类课程或培训)更有助于投资者缓解趋势追逐、频繁交易、处置效应等交易行为偏差,从而获得更高的投资收益。进一步分析表明,投资者教育通过提高“理性程度”来提升基金投资盈利概率、投资总收益率和年均收益率的中介效应分别为19.41%、17.09%和12.75%。此外,不同群体参与投资者教育的积极性和受教育效果存在显著差异,投资者教育要更多采取“分类教育”的形式。本文研究对进一步加强投资者教育、更好地推动资本市场发展具有一定的参考意义。  相似文献   

10.
Intermediaries such as financial advisers serve as an interface between portfolio managers and investors. A large fraction of their compensation is often provided through kickbacks from the portfolio manager. We provide an explanation for the widespread use of intermediaries and kickbacks. Depending on the degree of investor sophistication, kickbacks are used either for price discrimination or aggressive marketing. We explore the effects of these arrangements on fund size, flows, performance, and investor welfare. Kickbacks allow higher management fees to be charged, thereby lowering net returns. Competition among active portfolio managers reduces kickbacks and increases the independence of advisory services.  相似文献   

11.
与国际通行做法相比,我国投连险投资账户多履行了一个资产组合管理职能,这就使得投连险投资账户与基金具有了一定的可比性。本文基于投连险与基金信息披露的比较视角,指出了我国投连险信息披露存在的问题,并从保险公司、监管部门、社会力量三个方面提出了相应的对策。  相似文献   

12.
In a recent article, Black 1 introduces a type of trading that he terms noise trading. He asserts that noise trading, which he defines as trading on noise as if it were information, must be a significant factor in securities markets. However, he does not provide an explanation of why any investors would rationally want to engage in noise trading. The goal of this paper is to provide such an explanation for one type of investor, managers of investment funds. As shown here, the incentive for a manager to engage in noise trading arises because of the positive signal that the level of the manager's trading provides about his or her ability to collect private information concerning current and potential investments. If the manager's compensation is directly related to investors' perceptions of his or her ability, the manager will then trade more frequently than is justified on the basis of his or her private information. In addition to providing this explanation for noise trading, the results of this analysis may also be useful for further empirical exploration of the relation between investment fund portfolio turnover and subsequent performance.  相似文献   

13.
保险机构已经成为资本市场重要的机构投资者,其在整个资本市场中的作用日益受到关注.基于机构投资者异质性的视角,对保险机构和证券投资基金、社保基金以及Q FII等其他机构投资者的持股特征进行对比分析,总结梳理保险机构投资者持股的特征.并运用面板数据模型,从长期持股和持股比例变动两个方面对比分析保险机构持股与证券投资基金持股对股价波动的影响.结果表明:在样本期间内,相对于证券投资基金,保险机构长期持股起到了稳定股市的作用,但保险机构持股比例变动会加剧股市的波动.  相似文献   

14.
We examine the timing ability of mutual fund investors using cash flow data at the individual fund level. Over 1991–2004 equity fund investor timing decisions reduce fund investor average returns by 1.56% annually. Underperformance due to poor timing is greater in load funds and funds with relatively large risk-adjusted returns. In particular, the magnitude of investor underperformance due to poor timing largely offsets the risk-adjusted alpha gains offered by good-performing funds. Investors in both actively managed funds and index funds exhibit poor investment timing. We demonstrate that our empirical results are consistent with investor return-chasing behavior.  相似文献   

15.
孟勇 《保险研究》2011,(8):52-56
保险资金应用是我国保险行业发展的新亮点,但是在投资中存在着投资行为不合理的问题,这严重制约着我国保险业的健康发展。经分析认为目前投资模式不当的主要问题是资产组合方法有缺陷,认为在构建资产组合时应该考虑投资人的非理性,从行为金融学角度构建了保险投资模型,在模型中加入了投资人的主观观点,这样使投资模式更趋合理。本文利用Bl...  相似文献   

16.
In this paper, we generalize recursive utility to include lifetime uncertainty and utility from bequest. The generalization applies to discrete-time as well as continuous-time recursive utility, and it is an important step forward in the development of recursive utility. We formalize the problem of optimal consumption, investment, and life insurance choice under recursive utility, and we state a verification theorem with a generalized Hamilton-Jacobi-Bellman equation. Our generalization of recursive utility allows us to study optimal consumption, investment, and life insurance choice under separation of (market) risk aversion, elasticity of inter-temporal substitution, and elasticity of substitution between bequest and future utility. The separation gives rise to hump-shaped consumption patterns as observed in realized consumption.  相似文献   

17.
李科  陆蓉  夏翊  胡凡 《金融研究》2019,463(1):188-206
基金经理更换打破了基金共同持股投资组合中股票的关联性,降低了股票收益率相关性,进而影响了股票价格。本文基于基金共同持股和基金经理更换构建了对冲投资组合,获得0.1%的日超额收益率。基金投资组合中股票收益率相关性能够解释这种超额收益率,本文发现基金更换经理后,新基金经理重建投资组合,打破了原投资组合中股票间的关联,股票收益率相关性减弱,基金共同持股程度高的股票价格受到了更大影响。基金的被动流动性冲击不能解释本文的发现。本文的研究表明基金经理变更等基金管理行为通过股票收益率相关性对股票价格产生了重要影响。  相似文献   

18.
19.
We present evidence from questionnaire responses of mutual fund investors about recollections of past fund performance. We find that investor memories exhibit a positive bias, consistent with current psychological models. We find that the degree of bias is conditional upon previous investor choice, a phenomenon related to the well-known theory of cognitive dissonance. Psychological and economic frictions in the mutual fund industry are examined via a cross-sectional study of equity mutual funds. We find an unusually high frequency of poorly performing funds, consistent with investor “inertia.” We also examine the differential responses of investment dollars to past performance, controlling for survivorship. These show that the effect is confined to the top quartile. We find little evidence that the response to poor performance is unusual.  相似文献   

20.
We study a classical continuous-time consumption-investment problem of a power utility investor with deterministic labor income with the important feature that the consumption-investment process is constrained to be deterministic. This is motivated by the design of modern pension schemes of defined contribution type where, typically, the savings rate is constant and the proportional investment in growth stocks is a function of age or time-to-retirement, a so-called life-cycle investment strategy. We derive and study the optimal behavior corresponding to the optimal product design within this realistic family of products with deterministic decision profiles. We also propose a couple of suboptimal deterministic strategies inspired from the optimal stochastic strategy and compare the optimal stochastic control, the optimal deterministic control, and these suboptimal deterministic controls. The conclusion is that only little is lost by constraining to deterministic strategies and only little is lost by implementing the suboptimal simple explicit strategies rather than the optimal one we derive.  相似文献   

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