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Crowding and Liquidity Shocks 拥挤和流动性冲击
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-12-05 DOI: 10.3905/jpm.2022.1.448
Hector Chan, Tony Tan
The authors develop a model whose aim is to study the relationship between crowding and liquidity shocks. One of the main results of that model is that crowding is associated with a larger exposure to broader liquidity shocks on arbitrageurs. The authors confirm this link empirically by studying equity long–short strategies. They use short interest data both to identify liquidity shocks impacting sophisticated equity investors and to infer crowdedness for some of the well-known long–short equity factors. When liquidity shocks (such as the 2007 quant crisis or the more recent 2020 COVID-19–induced quant deleverage) occur, crowded strategies indeed tend to underperform.
作者开发了一个模型,其目的是研究拥挤和流动性冲击之间的关系。该模型的一个主要结果是,拥挤与套利者更大程度地暴露于更广泛的流动性冲击有关。作者通过对股票多空策略的实证研究证实了这一联系。他们使用空头数据来识别影响资深股票投资者的流动性冲击,并推断出一些众所周知的多空股票因素的拥挤程度。当流动性冲击(如2007年的量化危机或最近的2020年covid -19引发的量化去杠杆化)发生时,拥挤策略确实往往表现不佳。
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引用次数: 0
Factor Investing: The Best Is Yet to Come 要素投资:最好的还在后头
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-12-01 DOI: 10.3905/jpm.2022.1.445
David Blitz
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引用次数: 1
Selecting Investment Analytic Framework for Both Top-Down and Bottom-Up Investors: Using Global Equity as the Example 自上而下和自下而上投资者的投资分析框架选择——以全球股票为例
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-28 DOI: 10.3905/jpm.2022.1.444
Xi Li
In establishing the foundation for their investment process, investors typically set up the investment framework first by dividing their investment universes into different buckets along the combinations of multiple sensible dimensions such as geography and industry. Because the framework is applied to the entire investment process including alpha generation, portfolio construction, and risk management, it is fundamentally important for investment outcomes. Contrary to the current ad hoc approaches, the author proposes a methodology guided by economic intuitions to select the optimal framework among the feasible ones, using global equities as the example. The author finds that the region sector framework is generally the optimal one among the possible combinations of the geography and industry dimensions for both developed and emerging markets. These results are important to both stock selection and asset allocation investing and to the academic research that often uses the country framework. The methodology can be easily adapted to other investment universes beyond global equities.
在为投资过程奠定基础时,投资者通常首先建立投资框架,将他们的投资领域按照地理和行业等多个合理维度的组合划分为不同的领域。由于该框架适用于整个投资过程,包括阿尔法生成、投资组合构建和风险管理,因此对投资结果至关重要。与目前的特设方法相反,作者提出了一种以经济直觉为指导的方法,以全球股票为例,在可行的框架中选择最佳框架。作者发现,在发达市场和新兴市场的地理和行业维度的可能组合中,区域部门框架通常是最优的。这些结果对股票选择和资产配置投资以及经常使用国家框架的学术研究都很重要。该方法可以很容易地适用于全球股票以外的其他投资领域。
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引用次数: 0
Use CARMa to Price Your Stock: Equity Risk Premiums Reinvented with Exchange-Traded Funds 使用CARMa为您的股票定价:交易所交易基金重新获得股票风险溢价
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-25 DOI: 10.3905/jpm.2022.1.442
Stephen J. Antczak
Constant adaptation to real markets (CARMa) is an equity risk premium framework designed to help investors value stocks given real-world conditions. It measures risks that investors are likely to encounter by owning a specific stock, such as shifting consumer preferences, evolving investor psychology, or potential illiquidity. The need for CARMa centers around the fact that the techniques most commonly used by practitioners today (i.e., capital asset pricing model–based) work well when stock-specific risk does not change much but struggle when it does. CARMa is designed to measure a stock’s intrinsic value in the context of its future risk and evolve as its risk profile does. The fundamental difference between CARMa and convention centers on linkage. Convention is built on the concept that stock-specific risk is linked to the overall market, and this relationship is predetermined (via beta). In the CARMa approach, stock-specific and systematic risks are measured independently; there is no predetermined connection. As such, CARMa can evolve in tandem with changes in the stock’s particular risk profile.
持续适应真实市场(CARMa)是一个股票风险溢价框架,旨在帮助投资者在现实世界条件下评估股票。它衡量的是投资者持有某只股票可能面临的风险,比如消费者偏好的转变、投资者心理的演变或潜在的流动性不足。对CARMa的需求围绕着这样一个事实,即当今从业人员最常用的技术(即,基于资本资产定价模型的技术)在股票特定风险没有太大变化时工作良好,但当它发生变化时就会挣扎。CARMa旨在衡量股票在其未来风险背景下的内在价值,并随着其风险概况的变化而变化。CARMa与convention的根本区别在于联动。惯例建立在股票特定风险与整体市场相关联的概念之上,这种关系是预先确定的(通过贝塔系数)。在CARMa方法中,股票特有风险和系统性风险是独立衡量的;没有预先确定的联系。因此,CARMa可以随着股票特定风险状况的变化而演变。
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引用次数: 0
A Tour of the Factor Funhouse Factor Funhouse之旅
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-25 DOI: 10.3905/jpm.2022.1.443
Jennifer R. Bender
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引用次数: 1
Operating Leverage and Inflation 经营杠杆和通货膨胀
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-24 DOI: 10.3905/jpm.2022.1.441
Martin L. Leibowitz, S. Kogelman
This article presents a generalization of the concept of operating leverage to include leverage factors/multipliers that can be used to estimate the earnings impact from any changes (including inflation-driven changes) in unit sales, prices, or costs. For a given firm, these price, cost, and sales multipliers may be synchronous or offsetting, resulting in a wide range of net leverage effects. In general, operating leverage increases as sales decline, so an adverse environment will find a firm confronted with greater leverage reactions—at just the wrong time. The resulting convexity effect can exacerbate the amplitude of any sales-driven earnings cycle. Incorporating specific inflation flow-through factors in the operating leverage/multiplier model allows the earnings impact of different forms of inflation to be more readily envisioned. This more granular approach often leads to surprising results. This article presents examples that illustrate how some forms of inflation can have a positive earnings impact, whereas other combinations can be quite devastating, especially in terms of real earnings.
本文提出了经营杠杆概念的概括,包括杠杆因子/乘数,可用于估计单位销售、价格或成本的任何变化(包括通货膨胀驱动的变化)对收益的影响。对于一个给定的公司,这些价格、成本和销售乘数可能是同步的或相互抵消的,从而产生广泛的净杠杆效应。一般来说,经营杠杆随着销售额的下降而增加,因此在不利的环境中,公司会在错误的时间面临更大的杠杆反应。由此产生的凸性效应可以加剧任何销售驱动的盈利周期的振幅。在经营杠杆/乘数模型中纳入特定的通货膨胀流量因素,可以更容易地预测不同形式的通货膨胀对收益的影响。这种更细粒度的方法通常会产生令人惊讶的结果。这篇文章展示了一些例子,说明了某些形式的通货膨胀是如何对收入产生积极影响的,而其他形式的通货膨胀则可能是毁灭性的,尤其是在实际收入方面。
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引用次数: 1
Supply Chain and Correlations 供应链与关联
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-23 DOI: 10.3905/jpm.2022.1.440
F. Abergel, Adrien Akar
This article is an in-depth large-scale analysis of the supply chain network and its bearing on the correlation structure of stock returns. The authors show that the stock returns of companies that are connected through the supply chain network exhibit a correlation structure that differs significantly from that of random pairs of stocks. This effect is observed for companies that are connected directly as well as through a common third party. A clustering approach is used to yield some interesting easier-to-exploit results with a view toward risk modeling. The authors also perform an analysis of rare negative events, highlighting some lead-lag relationships.
本文对供应链网络及其对股票收益相关结构的影响进行了深入的大规模分析。作者表明,通过供应链网络连接的公司的股票收益表现出与随机股票对显著不同的相关性结构。这种效应既适用于直接连接的公司,也适用于通过共同第三方连接的公司。从风险建模的角度来看,使用聚类方法产生一些有趣的、更容易利用的结果。作者还对罕见的负面事件进行了分析,强调了一些领先-滞后关系。
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引用次数: 1
The Lost Decade: Have Macro Factor Risk Premia Become Irrelevant? 失去的十年:宏观因素风险溢价变得无关紧要了吗?
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-23 DOI: 10.3905/jpm.2022.1.439
Chenfei Ma, Eddie Cheng, Wai Lee
The role of factors in macro investing has come into question after mediocre performance during the past decade. In this article, the authors confirm this decline in profitability and examine the importance and relevance of macro factors via three different approaches, analyzing their explaining power for asset risks and cross-sectional return variations. They find no evidence of declining importance over time. They discuss a few possible explanations for the apparently unreliable risk premia associated with these factors in the recent decade.
在过去十年表现平平之后,因素在宏观投资中的作用受到了质疑。在这篇文章中,作者确认了盈利能力的下降,并通过三种不同的方法检验了宏观因素的重要性和相关性,分析了它们对资产风险和横截面回报变化的解释力。他们没有发现随着时间的推移重要性下降的证据。他们讨论了近十年来与这些因素相关的明显不可靠的风险溢价的几种可能解释。
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引用次数: 0
Improving Equity Fund Alpha Estimates with a Second Size Factor 用第二规模因子改进股票基金Alpha估计
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-15 DOI: 10.3905/jpm.2022.1.435
Nanqing Dong, Luka M. Jankovic, A. Stewart, Scott D. Stewart
Practitioners and researchers seek to accurately estimate the value added by active equity fund managers. The authors hypothesize that the asset pricing models used to study equity funds may better capture nonlinearity in stock returns across market capitalizations by replacing the commonly used single size factor with two new size factors. This extension is important for explaining equity mutual fund returns because active fund holdings are weighted toward mid- and small-cap stocks to a greater extent than holdings of cap-weighted market indexes. In tests designed to minimize data mining issues, two size factors explain equity fund returns better than do the Fama–French single-size and style factors. Augmented Fama–French models explain over 25% of unexplained variance and yield superior adjusted R-squares for more than 75% of equity funds in the CRSP mutual fund database. Applied tests supplement these broad statistical analyses and confirm the technique’s value for practice. Also of benefit, the two proposed factor return series are readily available on the Internet to researchers and practitioners alike.
从业人员和研究人员试图准确估计主动股票基金经理的增值。作者假设,通过用两个新的规模因子取代常用的单一规模因子,用于研究股票基金的资产定价模型可以更好地捕捉股票回报的非线性。这一扩展对于解释股票型共同基金的回报很重要,因为主动基金的持有量比市值加权市场指数的持有量更倾向于中小型股。在旨在尽量减少数据挖掘问题的测试中,两个规模因素比Fama-French单一规模和风格因素更能解释股票基金的回报。增强Fama-French模型解释了超过25%的无法解释的方差,并且在CRSP共同基金数据库中,超过75%的股票基金的调整后r平方收益率优越。应用测试补充了这些广泛的统计分析,并证实了该技术的实践价值。另外一个好处是,两个提出的因子回报系列很容易在互联网上提供给研究人员和从业人员。
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引用次数: 0
When Do and Which Fama–French Factors Explain Industry Returns? 什么时候、哪些法法因素解释了行业回报?
IF 1.4 4区 经济学 Q3 BUSINESS, FINANCE Pub Date : 2022-11-03 DOI: 10.3905/jpm.2022.1.432
N. Laopodis
The author examines the statistical significance of the five Fama–French factors and several macroeconomic variables by decade (since the 1960s) and industry. The main findings indicate that not all factors were significant in each decade and for each industry. Also, when the Fama–French factors were present in the regressions, the macroeconomic variables often lost their significance for these industries in each decade. Finally, when constructing factors out of the macro variables, it was found that they were significant for many industries, mainly from the 1970s through the 1990s and part of the 2010s. These findings have implications for portfolio managers when selecting industries based on factor models.
作者按年代(自20世纪60年代以来)和行业考察了五个法玛-弗朗奇因素和几个宏观经济变量的统计意义。主要研究结果表明,并非所有因素在每个十年和每个行业都具有重要意义。此外,当Fama-French因素出现在回归时,宏观经济变量往往在每个十年中对这些行业失去意义。最后,从宏观变量中构建因子时,发现它们对许多行业都是显著的,主要是在20世纪70年代到90年代以及2010年代的部分时间。这些发现对投资组合经理在基于因子模型选择行业时具有启示意义。
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Journal of Portfolio Management
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