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Portfolio Rebalancing: Tradeoffs and Decisions 投资组合再平衡:权衡与决策
Pub Date : 2021-06-03 DOI: 10.2139/ssrn.3858951
Xing Hong, Philipp Meyer-Brauns
This paper identifies a clear tradeoff between tracking error — performance differences relative to a targeted asset allocation — and turnover—a proxy for rebalancing costs — that can help guide investors’ rebalancing choices. We find that calendar-based approaches, while convenient, tend to lead to less efficient rebalancing tradeoffs than rebalancing with tolerance bands. Further improvements can be gained with tiered approaches that apply different tolerance bands across and within asset classes. We do not find evidence that rebalancing choices can reliably increase expected returns. Finally, our study evaluates how rebalancing choices relate to asset allocation and how they may impact a portfolio’s maximum drawdowns and shorter-term return differences to the target allocation.
本文确定了跟踪误差(相对于目标资产配置的绩效差异)与周转率(再平衡成本的代表)之间的明确权衡,这有助于指导投资者的再平衡选择。我们发现,基于日历的方法虽然方便,但往往会导致效率较低的再平衡权衡,而不是使用公差带进行再平衡。通过在资产类别之间和内部应用不同容忍度的分层方法,可以获得进一步的改进。我们没有发现证据表明再平衡选择可以可靠地增加预期收益。最后,我们的研究评估了再平衡选择与资产配置的关系,以及它们如何影响投资组合的最大回收量和短期回报与目标配置的差异。
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引用次数: 1
The Reform of Money Market Benchmarks Worldwide: Construction of a Forward Rate Model for the Moroccan Interbank Market 全球货币市场基准改革:摩洛哥银行间市场远期利率模型的构建
Pub Date : 2021-05-26 DOI: 10.2139/ssrn.3854204
Youssef Louraoui
The purpose of this research is to determine the practicality of a prospective reform of the Moroccan money market's interbank rate within the context of the worldwide shift of reference indices. By analyzing 351 days of quotations, we were able to acquire an optimistic result using the chosen approach, which includes regulated variations that keep the compound rate relatively stable in comparison to other rates. The findings can be used as a benchmark for future maturities. It is worth noting, however, that the compounding strategy does have certain drawbacks. This is the most often used strategy among market participants due to its simplicity in terms of theoretical foundations and openness. The primary shortcoming of the suggested model is its lack of predicting. The methodology is based on previous day's data, with an eye toward the past, which complicates the changeover given IBOR rates' future-oriented methodology. This research project is designed to act as a starting point for future revisions to the ideas made in the body of this research.
本研究的目的是确定摩洛哥货币市场的银行间利率的前瞻性改革的实用性在全球范围内的参考指数转移的背景下。通过分析351天的报价,我们能够使用所选择的方法获得乐观的结果,其中包括与其他费率相比保持复合费率相对稳定的监管变化。研究结果可以作为未来期限的基准。然而,值得注意的是,复合策略确实有一定的缺点。这是市场参与者最常用的策略,因为它在理论基础上简单,并且具有开放性。该模型的主要缺点是缺乏预测能力。这种方法是基于前一天的数据,并着眼于过去,鉴于IBOR利率面向未来的方法,这使得转换变得复杂。这个研究项目的目的是作为一个起点,为未来修订的想法,在这个研究的主体。
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引用次数: 0
Effectiveness of Credit Management System on Micro Credit Performance: Case Study of East Africa Commercial Banks and Mobile Operators 信贷管理制度对小额信贷绩效的影响——以东非商业银行和移动运营商为例
Pub Date : 2021-05-09 DOI: 10.2139/ssrn.3855367
Eveque Mutabaruka
Credit management is the process of granting credit, terms and conditions definition, compliance with credit policy, and then payment on the due date. The core business for financial institutions is to improve revenues and profit by facilitating sales and reducing loss and financial risks. This research is to assess the effectiveness of credit management principles and their impact on loan performance for a specific type of loan “microcredit”. The case study is microcredit in East Africa especially provided by commercial banks in partnership with mobile network operators. The purpose of the research will be mainly to assess the applicability of credit management principles to achieve better performance in microlending. This research's target sample is East Africa commercial banks in conjunction with mobile operators providing online microcredit to mobile money subscribers and commercial banks ‘customers.
信用管理是授信、定义条款和条件、遵守信用政策,然后在到期日付款的过程。金融机构的核心业务是通过促进销售、降低损失和财务风险来提高收入和利润。本研究旨在评估信贷管理原则的有效性及其对特定类型贷款“小额信贷”的贷款绩效的影响。案例研究是东非的小额信贷,特别是商业银行与移动网络运营商合作提供的小额信贷。研究的目的将主要是评估信贷管理原则的适用性,以实现更好的小额贷款绩效。本研究的目标样本是东非商业银行与移动运营商合作,为移动货币用户和商业银行的客户提供在线小额信贷。
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引用次数: 0
Liquidity Risk Management in the Avoidance of Another Financial Crisis 避免另一场金融危机的流动性风险管理
Pub Date : 2021-05-05 DOI: 10.2139/ssrn.3840350
Mazin A. M. Al Janabi
The global financial crisis showed us that there is a need for appropriate identification and evaluation of implicit liquidity trading risks in investment portfolios. It is undeniable that many of the financial institution collapses, both in developed and emerging markets, as well as the subsequent financial turbulence, were, to a certain extent, caused by the impact of liquidity trading risk on structured stocks portfolios. Liquidity trading risk increases due to the incapability of financial institutions to liquidate their shares at a fair price during the settlement period. In the chapter “Liquidity risk management in emerging and Islamic markets” that I published as part of the Handbook of Empirical Research on Islam and Economic Life (Edward Elgar, 2017), edited by the renowned scholar Prof. M. Kabir Hassan, University of New Orleans, I empirically develop and test a strategy of measurement and exposure control of market/liquidity risks of investment portfolios that include illiquid capital shares in critical circumstances, proposing that there be a strategy for the establishment of maximum risk limits.
全球金融危机告诉我们,有必要对投资组合中的隐性流动性交易风险进行适当的识别和评估。不可否认,无论是发达市场还是新兴市场,许多金融机构的倒闭以及随之而来的金融动荡,在一定程度上都是流动性交易风险对结构性股票投资组合的影响造成的。由于金融机构无法在结算期间以公平价格清算其股份,流动性交易风险增加。在由新奥尔良大学著名学者M. Kabir Hassan教授编辑的《伊斯兰与经济生活实证研究手册》(爱德华·埃尔加,2017年)中,我出版了“新兴市场和伊斯兰市场的流动性风险管理”一章。在这一章中,我实证地开发并测试了一种衡量和暴露控制投资组合市场/流动性风险的策略,这些投资组合包括在关键情况下的非流动性资本股。建议有一个建立最大风险限制的策略。
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引用次数: 0
Capital Requirements and Claims Recovery: A New Perspective on Solvency Regulation 资本要求与债权追偿:偿付能力监管的新视角
Pub Date : 2021-04-18 DOI: 10.2139/ssrn.3829179
Cosimo Munari, Stefan Weber, Lutz Wilhelmy
Protection of creditors is a key objective of financial regulation. Where the protection needs are high, i.e., in banking and insurance, regulatory solvency requirements are an instrument to prevent that creditors incur losses on their claims. The current regulatory requirements based on Value at Risk and Average Value at Risk limit the probability of default of financial institutions, but fail to control the size of recovery on creditors' claims in the case of default. We resolve this failure by developing a novel risk measure, Recovery Value at Risk. Our conceptual approach can flexibly be extended and allows the construction of general recovery risk measures for various risk management purposes. By design, these risk measures control recovery on creditors' claims and integrate the protection needs of creditors into the incentive structure of the management. We provide detailed case studies and applications: We analyze how recovery risk measures react to the joint distributions of assets and liabilities on firms' balance sheets and compare the corresponding capital requirements with the current regulatory benchmarks based on Value at Risk and Average Value at Risk. We discuss how to calibrate recovery risk measures to historic regulatory standards. Finally, we show that recovery risk measures can be applied to performance-based management of business divisions of firms and that they allow for a tractable characterization of optimal tradeoffs between risk and return in the context of investment management.
保护债权人是金融监管的一个关键目标。在保护需求高的地方,即银行和保险业,监管偿付能力要求是防止债权人在其索赔上蒙受损失的一种工具。现行基于风险价值和风险平均价值的监管要求限制了金融机构的违约概率,但未能控制违约情况下对债权人债权的追偿规模。我们通过开发一种新的风险度量来解决这一失败,即风险恢复价值。我们的概念方法可以灵活扩展,并允许为各种风险管理目的构建一般的恢复风险措施。通过设计,这些风险措施控制对债权人债权的追偿,并将债权人的保护需求纳入管理层的激励结构。我们提供了详细的案例研究和应用:我们分析了恢复风险措施对公司资产负债表上资产和负债的联合分配的反应,并将相应的资本要求与基于风险价值和平均风险价值的当前监管基准进行了比较。我们将讨论如何根据历史监管标准校准恢复风险措施。最后,我们表明恢复风险措施可以应用于公司业务部门的基于绩效的管理,并且它们允许在投资管理背景下对风险和回报之间的最佳权衡进行易于处理的表征。
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引用次数: 3
New Insights on the Forward Premium Regression through a Portfolio-based Approach 基于投资组合方法的远期溢价回归新见解
Pub Date : 2021-03-25 DOI: 10.2139/ssrn.3812224
Jinyong Kim, Kun-Ho Kim, Taejin Kim
This study proposes a portfolio-based forward premium regression to estimate its time-varying coefficients and to conduct simultaneous inference. To this end, we sort currency portfolios on forward premiums. The empirical results show much weaker evidence of Uncovered Interest Parity (UIP) breakdown for the currency portfolios than for individual currencies. The main implication is that the effects of two sources of heterogeneity—exposure to currency-specific risk and exposure to common risk—on the forward premium anomaly diminish with diversification through portfolio construction. The study also illustrates that the U.S. fundamentals have persistent predictive power for the risk premium of each portfolio.
本研究提出一种基于组合的正向溢价回归来估计其时变系数并进行同步推理。为此,我们根据远期溢价对货币投资组合进行排序。实证结果表明,与单个货币相比,货币组合中未覆盖利率平价(UIP)分解的证据要弱得多。其主要含义是,两种异质性来源——对货币特定风险的暴露和对共同风险的暴露——对远期溢价异常的影响随着投资组合结构的多样化而减弱。该研究还表明,美国的基本面对每个投资组合的风险溢价具有持久的预测能力。
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引用次数: 1
Financial Risk Meter based on Expectiles 基于期望值的财务风险计量
Pub Date : 2021-03-21 DOI: 10.2139/ssrn.3809329
Rui Ren, Meng-Jou Lu, Yingxing Li, W. Härdle
The Financial Risk Meter (FRM) is an established quantitative tool that, based on conditional Value at Risk (VaR) ideas, yields insight into the dynamics of network risk. Originally, the FRM has been composed via Lasso based quantile regression, but we here extend it by incorporating the idea of expectiles, thus indicating not only the tail probability but rather the actual tail loss given a stress situation in the network. The expectile variant of the FRM enjoys several advantages: Firstly, the multivariate tail risk indicator conditional expectile-based VaR (CoEVaR) can be derived, which is sensitive to the magnitude of extreme losses. Next, FRM index is not restricted to an index compared to the quantile based FRM mechanisms, but can be expanded to a set of systemic tail risk indicators, which provide investors with numerous tools in terms of diverse risk preferences. The power of FRM also lies in displaying the FRM distribution across various entities every day. Two distinct patterns can be discovered under high stress and during stable periods from the empirical results in the United States stock market. Furthermore, the framework is able to identify individual risk characteristics and to capture spillover effects in a network.
金融风险计量(FRM)是一种成熟的定量工具,它基于条件风险价值(VaR)的思想,可以深入了解网络风险的动态。最初,FRM是通过基于Lasso的分位数回归组成的,但我们在这里通过纳入预期值的思想对其进行扩展,从而不仅表示尾部概率,还表示网络中给定应力情况下的实际尾部损失。FRM的目标变量具有以下几个优点:首先,可以推导出对极端损失程度敏感的多变量尾部风险指标——基于条件目标的VaR (CoEVaR);其次,与基于分位数的FRM机制相比,FRM指数不再局限于一个指数,而是可以扩展为一组系统性尾部风险指标,为投资者提供多样化风险偏好的多种工具。FRM的强大之处在于每天显示不同实体之间的FRM分布。从美国股票市场的实证结果来看,在高压力和稳定时期可以发现两种截然不同的模式。此外,该框架能够识别个体风险特征并捕捉网络中的溢出效应。
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引用次数: 1
ESG Rating Events and Stock Market Reactions ESG评级事件与股市反应
Pub Date : 2021-03-12 DOI: 10.2139/ssrn.3803254
M. Glück, Benjamin Hübel, H. Scholz
This paper examines the effect of Environmental-, Social- and Governance- (ESG) rating events on returns and risks of stocks based on a large sample of US firms and their MSCI ESG ratings. Using event study methodology, we find that markets react with significant negative abnormal returns to downgrades in environmental and in social scores. ESG rating changes thus seem to provide new value-relevant information to market participants. Further, applying a difference-in-differences approach, we assess whether and how changes in ESG rating impact the risks associated with stocks by examining downside, systematic and total risk. Our findings suggest that rating changes already materialize shortly after the rating event. Upgrades in environmental scores significantly moderate downside risk, whereas upgrades in governance scores seem to mitigate systematic risk. Therefore, by improving the firm’s ESG profile, managers can mitigate value-relevant risks of their firms in short-term.
本文基于美国公司及其MSCI ESG评级的大样本,研究了环境、社会和治理(ESG)评级事件对股票回报和风险的影响。使用事件研究方法,我们发现市场对环境和社会得分的下降做出显著的负异常回报反应。因此,ESG评级的变化似乎为市场参与者提供了新的价值相关信息。此外,采用差异中的差异方法,我们通过检查下行风险、系统风险和总风险来评估ESG评级的变化是否以及如何影响与股票相关的风险。我们的研究结果表明,评级变化在评级事件发生后不久就会出现。环境得分的升级显著地缓和了下行风险,而治理得分的升级似乎减轻了系统风险。因此,通过改善公司的ESG概况,管理者可以在短期内减轻公司的价值相关风险。
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引用次数: 2
Price Discovery in China’s Corporate and Treasury Yield Curves 中国企业和国债收益率曲线的价格发现
Pub Date : 2021-03-12 DOI: 10.2139/ssrn.3803121
E. Girardin, Sandrine Lunven, Hongyi Chen
As financial development progresses, the maturity structure of bond yields plays a rising role not only in the financial system but also as a key transmission channel of monetary policy. China is likely to be no exception. However, specific characteristics in China’s bond markets raise two major questions. First do China’s Treasury bonds offer the benchmark term structure of yields, or is this role fulfilled by the young but fast expanding corporate bond market? In other words, where does price discovery take place in the Chinese bond market in terms of the different components of the yield curve?

We identify both dynamic and long-run relationships between each of the level, slope and curvature factors of the Treasury and corporate bond markets yield curve in China. We aim at determining which market plays a leading role in the discovery of each factor of the yield curve.

We obtain three main results. First, we document for the first time the presence of a long-run relationship between the corporate and Treasury bond markets in China both for the level and the slope of their yield curve. Second, such a long-run relationship appears to be stable between the slopes over the full sample 2006-2017, but shows a break for the level factor in 2012. Third, the source market for price discovery varies with the parameters of the yield curve. While the corporate bond market is the source of price discovery for the level factor, this function is fulfilled by the government bond market for the slope parameter.

The finding that the Treasury bond market is not fully dominant in level bond-pricing may not come as a surprise. Although China’s corporate bond market has developed rapidly in the past fifteen years, there were few default cases during that period. It is believed investors treat the default risk of corporate bonds as similar to that of Treasury bonds, and benefit from the high corporate spread. Our results for the slope parameter imply that market-oriented reform has progressed enough for the Treasury bond market to already provide a benchmark slope for the yield curve of corporate bonds. When the reform progresses further, we would expect corporate bonds to be priced according to their risk profile which should make the Treasury market lead in price discovery also for the level of the yield curve.
随着金融的发展,债券收益率的期限结构不仅在金融体系中发挥着越来越重要的作用,而且也是货币政策的重要传导渠道。中国可能也不例外。然而,中国债券市场的具体特点引发了两个主要问题。首先,是中国国债提供收益率的基准期限结构,还是由年轻但发展迅速的公司债券市场来扮演这一角色?换句话说,就收益率曲线的不同组成部分而言,中国债券市场的价格发现发生在哪里?我们确定了中国国债和公司债券市场收益率曲线的水平、斜率和曲率因素之间的动态和长期关系。我们的目标是确定哪个市场在发现收益率曲线的每个因素中起主导作用。我们得到三个主要结果。首先,我们首次记录了中国公司债券和国债市场在收益率曲线水平和斜率方面存在的长期关系。其次,在2006-2017年的整个样本中,这种长期关系在斜率之间似乎是稳定的,但在2012年显示出水平因素的中断。第三,价格发现的源市场随着收益率曲线参数的变化而变化。对于水平因子,公司债券市场是价格发现的来源,而对于斜率参数,政府债券市场则履行了这一功能。美国国债市场在债券定价中并未完全占据主导地位,这一发现或许并不令人意外。虽然中国公司债券市场在过去15年发展迅速,但在此期间几乎没有出现违约案例。据信,投资者将公司债的违约风险视为与美国国债类似的违约风险,并从公司债的高利差中获益。我们的斜率参数的结果表明,市场化改革已经取得了足够的进展,国债市场已经为公司债券的收益率曲线提供了一个基准斜率。当改革进一步推进时,我们预计公司债券将根据其风险状况进行定价,这将使国债市场在收益率曲线水平的价格发现方面处于领先地位。
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引用次数: 0
Machine Learning Predictions of Credit and Equity Risk Premia 信用和股票风险溢价的机器学习预测
Pub Date : 2021-03-08 DOI: 10.2139/ssrn.3800205
Arben Kita
The emergence of algorithmic high-frequency trading in the market for credit risk affords accurate inference of new risk measures. When combined with machine learning predictive methods, these measures forecast substantial future changes in firms' credit and equity risk premiums in out-of-sample. Parallel measures estimated from firms' stocks fail to predict risk premiums, indicating that credit-market-based risk measures contain valuable information for forecasting firms' risk premia in both markets. The innovative high-volume high-frequency trading has not alleviated short-horizon pricing deviations across firms' equity and credit markets, an epitome of latent arbitrage in the market for credit risk.
信用风险市场中算法高频交易的出现,为新的风险度量提供了准确的推断。当与机器学习预测方法相结合时,这些措施预测了样本外公司信用和股票风险溢价的重大未来变化。从公司股票中估计的平行度量不能预测风险溢价,这表明基于信贷市场的风险度量包含有价值的信息,可以预测公司在两个市场中的风险溢价。创新的高交易量高频交易并没有缓解企业股票和信贷市场的短期定价偏差,这是信用风险市场潜在套利的一个缩影。
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引用次数: 1
期刊
Econometric Modeling: Capital Markets - Risk eJournal
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