Size and investment performance: a research note

This article examines the performance of actively managed Australian equity funds and the extent to which both fund size and manager size are related to risk-adjusted returns. Larger investment managers, by definition, engage in higher trade volume. The literature documents that transaction costs and trade difficulty increase with trade size, given difficulties associated with 'large' trades and their potential market impact on security prices. Therefore, ceteris paribus , large orders are consistent with lower levels of efficiency in trade execution and higher transaction costs. While larger investment managers may experience material disadvantages relative to their smaller counterparts, the Australian literature to date has largely ignored the issues of asset size and the long run performance of investment offerings. This article, employing returns and fund size data that control for survivorship bias, documents that while large retail active equity funds earn higher risk-adjusted returns (after expenses) than small funds, the difference in mean performance is not significantly different. In the institutional sphere, the study also finds no statistically significant performance differences (net of expenses) between funds on the basis of portfolio size. These findings suggest the hypothesis that performance declines with fund size is not supported empirically.     

Excess returns and international diversification: The Scandinavian view

The paper discusses excess returns within four Scandinavian stock markets and also how Scandinavian returns are related to the returns in non-Scandinavian markets. Some underlying reasons for the observed economically weak relationships between markets are reviewed. Moreover, some reasons why the interrelationships between markets can be expected to increase in the future are provided.     

Economic complexity,diversification and economic development: The strategic factors

The aim of this paper is to deliver an econometric panel data analysis on economic complexity by using annual data from 133 countries during the period from 1984 to 2018. This work admits that spatial heterogeneity and discontinuity may affect economic complexity and that there is a more accurate supranational level of analysis and economic policy. The paper shows that variables such as GDP per capita and economic vulnerability strongly affect the economic complexity of a country, while human capital and innovation rate are less significant. The potential of natural resources seems to be negatively correlated with economic complexity.     

Corporate diversification,institutional investors and internal control quality

This study investigates the relationship between corporate diversification, institutional investors and internal control quality. Using a sample of firms disclosing internal control information from 1999 to 2011, the results show that corporate diversification is positively associated with the likelihood of internal control weakness. Moreover, this relationship is stronger (weaker) when firms have higher transient (dedicated) institutional ownership, indicating that transient (dedicated) institutional investors increase (mitigates) the internal control problems arising from diversification. This study contributes to the literature by providing evidence on the role of corporate diversification in the quality of internal control.     

现代投资组合新视角:对冲基金配置的理论与实证研究

本文在分析传统的投资对冲基金组合架构存在不足的基础上,提出了新的资产组合构架模型,并从理论上论证了对冲基金为何不是一个纯粹超额收益的制造者而更多是一个风险溢价的提供者以及将对冲基金与传统资产有机整合到一起的好处。然后用Cornish—Fisher伸展式对新的资产组合进行分析,证明了新架构的合理性,并用欧美市场的数据进行实证检验。本研究为对冲基金投资者提供了新的操作范式。     

Geographic versus industry diversification: Constraints matter

This research addresses whether geographic diversification provides benefits over industry diversification in the Eurozone. Our contribution is to show that in the absence of constraints, no empirical evidence is found to support the argument that geographic diversification dominates industry diversification, except in the euro subperiod. With short-selling constraints, however, the tangency portfolio of geographic diversification is not attainable by industry diversification. In out-of-sample geographic minimum variance portfolios outperform industry portfolios in economic terms, although we cannot establish statistical significance.     

Portfolio diversification benefits within Europe: Implications for a US investor

This paper investigates the possibility of cointegration between the United States and 11 European equity markets before and after the convergence period of 1995. The results indicate that during the preconvergence and postconvergence periods, some country groups, with and without the US equity market, exhibited cointegration while others did not. For the European Union markets, however, at least one cointegrating vector emerged in either period, but no cointegration among them surfaced during the Euro introduction period of 1999. These results suggest that a US investor can still benefit from country diversification within the European Union markets.     

How loan portfolio diversification affects risk, efficiency and capitalization: A managerial behavior model for Austrian banks

The aim of this paper is to analyze how diversification of banks across size and industry affects risk, cost and profit efficiency, and bank capitalization for large Austrian commercial banks over the years 1997–2003. Employing a unique dataset, provided by the Austrian Central Bank, we test for several different types of managerial hypotheses, formalized according to a modified version of the Berger and DeYoung model [Berger, A.N., DeYoung, R., 1997. Problem loans and cost efficiency in commercial banks. Journal of Banking and Finance 21, 849–870]. We find that, although diversification negatively affects cost efficiency, it increases profit efficiency and reduces banks’ realized risk. Finally, diversification seems to have a positive impact on banks’ capitalization.     

Diversification strategy,efficiency, and firm performance: Insight from emerging market

We investigate further the inconsistencies of the diversification-performance link by introducing efficiency as moderating factor. A data of 319 firms was used to conduct a panel data analysis excluding the financial sector industries and the results show three important findings. First, industrial diversification shows a significant contribution in performance improvement while international diversification shows no effect on performance. Yet, international-conglomerate shows a significant negative relationship with performance. Meanwhile, the efficiency results are contrary to our conjecture. We find that efficiency is a factor to enhance performance, but it is not the moderating variable on the diversification-performance link. This implies that the efficiency of the firm has no connection with the link between diversification and performance.     

Uncertainty about average profitability and the diversification discount

The diversification discount (multiple segment firm value below the value imputed using single segment firm multiples) is commonly thought to be generated by agency problems, a lack of transparency, or lackluster future prospects for diversified firms. If multiple segment firms have lower uncertainty about mean profitability than single segment firms, rational learning about mean profitability provides an alternative explanation for the diversification discount that does not rely on suboptimal managerial decisions or a poor firm outlook. Empirical tests which examine changes in firm value across the business cycle and idiosyncratic volatility are consistent with lower uncertainty about mean profitability for multiple segment firms.     

Securitization and the dark side of diversification

Diversification by banks affects the systemic risk of the sector. Importantly, Wagner (2010) shows that linear diversification increases systemic risk. We consider the case of securitization, whereby loan portfolios are sliced into tranches with different seniority levels. We show that tranching offers nonlinear diversification strategies, which can reduce the failure risk of individual institutions beyond the minimum level attainable by linear diversification without increasing systemic risk.     

多元化战略与代理成本、公司业绩关系的实证研究

本文主要研究上市公司采取多元化战略后对公司代理成本及公司业绩的影响。许多学者对目前多元化折价现象进行了解释,认为由于内部资本市场的无效率导致了多元化公司的资源配置没有发挥着理论上应该具备的优势;很多学者从代理问题出发来解释多元化折价现象,但是针对代理成本与多元化程度的关系做实证检验就很少。验证多元化是否真的提高了代理成本,本文正是基于这一点来展开研究的。结论为代理成本与多元化程度成正比,公司业绩与多元化程度成反比。     

Portfolio selection with a drawdown constraint

When identifying optimal portfolios, practitioners often impose a drawdown constraint. This constraint is even explicit in some money management contracts such as the one recently involving Merrill Lynch’ management of Unilever’s pension fund. In this setting, we provide a characterization of optimal portfolios using mean–variance analysis. In the absence of a benchmark, we find that while the constraint typically decreases the optimal portfolio’s standard deviation, the constrained optimal portfolio can be notably mean–variance inefficient. In the presence of a benchmark such as in the Merrill Lynch–Unilever contract, we find that the constraint increases the optimal portfolio’s standard deviation and tracking error volatility. Thus, the constraint negatively affects a portfolio manager’s ability to track a benchmark.     

流动性、风险收益与B股市场境外投资者行为

通过对B股市场的流动性、风险及国外投资者的投资动机进行了研究和度量后发现,B股市场对内开放的确加强了它的流动性,但是B股市场波动风险依然高于A股市场,且国外投资者投资B股市场受流动性变化影响不大,因为其他们投资的主要目的不是分散风险而是获取超额预期回报率。因而,在B股市场存废问题在短期内不能解决的情况下,加强B股市场管理,改善市场结构,对国外投资者的投资行为进行合理的监督和引导是完善B股市场的非常重要的举措。     

Harmful diversification: Evidence from alternative investments

Alternative assets have become as important as equities and fixed income in the portfolios of major investors, and so their diversification properties are also important. However, adding five alternative assets (real estate, commodities, hedge funds, emerging markets and private equity) to equity and bond portfolios is shown to be harmful for US investors. We use 19 portfolio models, in conjunction with dummy variable regression, to demonstrate this harm over the 1997–2015 period. This finding is robust to different estimation periods, risk aversion levels, and the use of two regimes. Harmful diversification into alternatives is not primarily due to transactions costs or non-normality, but to estimation risk. This is larger for alternative assets, particularly during the credit crisis which accounts for the harmful diversification of real estate, private equity and emerging markets. Diversification into commodities, and to a lesser extent hedge funds, remains harmful even when the credit crisis is excluded.     

Determinants of voluntary disclosure of segment information: A re-examination of the role of diversification strategy

This paper explores the determinants of management's decision to voluntarily disclose segment information. It is an extension of McKinnon and Dalimunthe (1993) who investigate the role of six hypothesised determinants. Their results indicate that firm size, industry membership, ownership diffusion, and the level of minority interest are related to the voluntary disclosure of segment information. However, they find that leverage and diversification into related versus unrelated industries are not related to this disclosure. It is the diversification finding that motivates our work. This paper explores the effect of differences in data, differences in samples, and differences in the measurement of diversification on the McKinnon and Dalimunthe (1993) results. Using an alternative definition of diversification, we find diversification strategy, firm size, and the level of minority interest to be related to segment disclosure while the results for ownership diffusion and industry are mixed. We find no support for a leverage effect.     

Measuring fund style,performance and activity: a new style‐profiling approach

We construct new measures of fund style, performance and activity from linear combinations of off‐the‐shelf stock‐market indices. A fund's benchmark portfolio is a linear combination of two or more reference portfolios that in a least‐squares sense most closely approximates the fund's portfolio. The resulting linear combination scalar is itself a measure of fund style and the distance between a fund and its benchmark is a measure of fund activity. Our approach has a number of advantages over existing characteristic‐matching methods. We illustrate our approach using a data set of US institutional funds.     

Market structure and diversification of mutual funds

This study characterizes a systematic relationship between the diversification incentives and the market structure of the mutual funds industry with investors differentiated by their attitude towards risk. With sufficiently low competition the subgame perfect portfolio equilibrium exhibits maximal risk differentiation. With intensified competition intermediate funds, i.e., those attracting investors with intermediate attitudes towards risk, select diversified portfolios. Finally, we offer a general characterization of how imperfect competition between risk-differentiated funds will generate an equilibrium relationship between risk and expected returns.     

企业多元化:理论与实践的反思

多元化是目前许多企业热衷的战略选择 ,成为企业心目中的“伊甸园”。本文作者从多元化发展的理论与实践及其历程入手进行分析 ,认为不论从多元化与企业分散风险、扩张规模、增加绩效之间的联系 ,还是从发达国家多元化的实践来看 ,多元化并没有达到人们预想的效果 ,而正确的选择是坚持走专业化的道路。