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Insurability of Pandemic Risks 流行病风险的可保性
Pub Date : 2020-12-01 DOI: 10.2139/ssrn.3748753
Helmut Gründl, Danjela Guxha, A. Kartasheva, Hato Schmeiser
The paper analyzes the scope for the private market for pandemic insurance and discusses the potential role of the financial market and the government. Building on a premise that pandemics are classified as catastrophic risks by the insurance industry, we start by providing a framework that explains theoretically how the catastrophe insurance supply and demand depend on the skewed and fat-tailed loss distributions and the co-movement between insurance stocks performance and the financial market. We use the model to estimate the supply of insurance for natural catastrophes. Then, by using the high-frequency data that tracks the economic impact of the COVID-19 pandemic in the US, we calibrate the loss distribution of a hypothetical insurance contract designed to alleviate the impact of the pandemic on small businesses and employment. The model of catastrophic insurance supply provides a calibration of the supply of pandemic insurance and allows us to compare it to other types of catastrophic insurance. Building on our estimation results, we discuss the scope for the risk transfer to the financial market and the role of the government.
本文分析了流行病保险私人市场的范围,并讨论了金融市场和政府的潜在作用。在流行病被保险业归类为灾难性风险的前提下,我们首先提供了一个框架,从理论上解释了巨灾保险的供需如何依赖于倾斜和厚尾损失分布以及保险股表现与金融市场之间的共同运动。我们使用该模型来估计自然灾害保险的供应。然后,通过使用跟踪2019冠状病毒病大流行对美国经济影响的高频数据,我们校准了一份假想保险合同的损失分布,该合同旨在减轻大流行对小企业和就业的影响。巨灾保险供应模型提供了大流行保险供应的校准,并使我们能够将其与其他类型的巨灾保险进行比较。基于我们的估计结果,我们讨论了风险向金融市场转移的范围和政府的作用。
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引用次数: 11
The Externalities of Fire Sales: Evidence from Collateralized Loan Obligations 贱卖的外部性:来自抵押贷款凭证的证据
Pub Date : 2020-11-23 DOI: 10.2139/ssrn.3735645
Shohini Kundu
I investigate how covenants, intrinsic to Collateralized Loan Obligation (CLO) indentures, provide a mechanism through which idiosyncratic shocks may be amplified, imposing negative externalities on other unrelated firms in CLO portfolios. To this aim, I exploit cross-sectional variation in CLO exposure to the Oil & Gas (O&G) industry, as well as the timing of the O&G bust in 2014 to study how non-O&G firms in CLO portfolios are affected. I find that when CLOs are subject to idiosyncratic shocks that push them closer to their covenant constraints, they fire-sell unrelated loans in the secondary loan market to alleviate these constraints. The ex-post, secondary market spread becomes the effective cost of capital for these innocent bystanders, as the expected rate of return across debt instruments is equalized in market equilibrium. In response, firms make financial and real adjustments. These adjustments are most pronounced for riskier firms held in CLO portfolios, whose loans are marked at market prices, as selling mark-to-market loans can generate greater slack in the covenant constraints. As the sample period for this study is 2012-2017, a relatively benign macroeconomic period, the effects may be significantly larger during times of stress such as Spring of 2020, at the outset of the COVID-19 pandemic.
我研究了贷款抵押债券(CLO)契约内在的契约如何提供一种机制,通过这种机制,特殊冲击可能会被放大,对CLO投资组合中其他不相关的公司施加负面外部性。为此,我利用油气行业CLO敞口的横截面变化,以及2014年油气泡沫破裂的时间,研究CLO投资组合中的非油气公司是如何受到影响的。我发现,当clo受到特殊冲击,迫使它们更接近契约约束时,它们会在二级贷款市场贱卖不相关贷款,以缓解这些约束。事后二级市场价差成为这些无辜旁观者的有效资本成本,因为所有债务工具的预期回报率在市场均衡中是相等的。作为回应,企业做出了财务和实际调整。这些调整对于持有CLO投资组合的风险较高的公司最为明显,这些公司的贷款以市场价格计价,因为出售按市值计价的贷款可能会使契约约束更加宽松。由于本研究的样本期为2012-2017年,这是一个相对良性的宏观经济时期,因此在压力时期,如2019冠状病毒病大流行开始的2020年春季,其影响可能会明显更大。
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引用次数: 7
Exploring the Cyclical Predictability of Sector-Specific Premia 探索行业特定溢价的周期性可预测性
Pub Date : 2020-11-16 DOI: 10.2139/ssrn.3731519
Till Sänger
This dissertation simplifies and substantially improves equity premium and sector return forecasts by combining two prediction models that perform well during different regime states as in Tsiakas et al. (2020) through Dynamic Model Averaging (DMA) of Raftery et al. (2010). This approach allows for statistically significant and economically valuable equity premium forecasts during both recessions and expansions, without needing to predict the regime state explicitly. Extending this approach to sector returns, the adaptability of DMA to sector-specific dynamics allows for return forecasts that outperform all considered alternatives and provide significant economic value in a modified Risk-to-Reward Timing strategy based on Kirby and Ostdiek (2012) over an equally weighted benchmark portfolio spanning all sectors.
本文通过Raftery等人(2010)的动态模型平均(DMA),结合Tsiakas等人(2020)在不同制度状态下表现良好的两个预测模型,简化并大幅改进了股票溢价和行业回报预测。这种方法允许在衰退和扩张期间进行具有统计意义和经济价值的股票溢价预测,而无需明确预测制度状态。将这种方法扩展到行业回报,DMA对行业特定动态的适应性允许回报预测优于所有考虑的替代方案,并在基于Kirby和Ostdiek(2012)的修正风险-回报时间策略中提供显著的经济价值,该策略基于跨越所有行业的等加权基准投资组合。
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引用次数: 0
Black Swan Event: An Evidence from China’s Economics Efects 黑天鹅事件:来自中国经济效应的证据
Pub Date : 2020-11-16 DOI: 10.12955/peb.v1.30
Elena Stavrova, M. Paskaleva, Ani Stoykova
The prognosis of upcoming crises and the course of actually understanding them is increasingly becoming a major subject of discussions in pursuit of reliable indicators The trade war between the United States and China, along with the COVID-19 pandemic are two events that took place in the Chinese economy with the aforementioned characteristics of the Black swan phenomenon, to which this latest professional analysis is devoted The objective of this research is to examine the response of the Shanghai Stock Exchange Composite (SSEC) index, in addition to its relation with macroeconomic variables contributing towards a possible Black Swan Event We employ an econometric methodology comprising of a unit root test, descriptive statistics, linear regression and correlation analysis for the period 2007-2019 Our results illustarte that the bubble from 2015, which is classified as a Black Swan event by many researchers, has a negative influence on the SSEC index We can further deduce that there were some psychological effects on the Chinese stock market that lead to both, positive and negative trends of SSEC indices The main findings confirmed that the Consumer Price Index, Exchange Rate, Interest Rate, Unemployment, GDP and Trade Balance were significantly elaborative macroeconomic variables, that had a substantial impact on the SSEC index
对即将到来的危机的预测和实际理解的过程日益成为追求可靠指标的重要议题。中美贸易战和新冠肺炎大流行是发生在中国经济中的两个事件,具有上述黑天鹅现象的特征。本研究的目的是检验上海证券交易所综合指数(SSEC)的反应,以及它与可能导致黑天鹅事件的宏观经济变量之间的关系。我们采用计量经济学方法,包括2007-2019年期间的单位根检验、描述性统计、线性回归和相关分析。我们的结果表明,2015年以来的泡沫这一事件被许多研究者归类为黑天鹅事件,对SSEC指数产生了负面影响。我们可以进一步推断,中国股市存在一定的心理效应,导致SSEC指数既有正向趋势,也有负向趋势。主要研究结果证实,消费者物价指数、汇率、利率、失业率、GDP和贸易平衡是显著细化的宏观经济变量,它们对SSEC指数产生了实质性影响
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引用次数: 0
The Theory of Normal Backwardization Financialization of the Futures Markets 期货市场正常后向化金融化理论
Pub Date : 2020-11-09 DOI: 10.2139/ssrn.3798704
C. Carter, C. R. Giha
Over the past twenty years there has 1 been a large inflow of investment capital into commodity futures markets-the financialization of commodities. This chapter analyses the behavior of commodity futures contract returns before and since finalization of the markets. We believe that Professor Gordon C. Rausser's research in the 1970s contributed to the dramatic inflow of speculative investment into commodity futures, because he showed there were possible profits to be made "right at the edge of randomness" with computerized trading rules. Using the methodology in Carter, Rausser and Schmitz (1983) we find that the financialization impacted the Keynesian risk premiums in the futures market, as the market became over-crowded with speculative money.
在过去的二十年里,有大量的投资资本流入商品期货市场——商品金融化。本章分析了商品期货合约入市前和入市后的收益行为。我们认为,戈登·c·劳瑟(Gordon C. Rausser)教授在上世纪70年代的研究促成了投机性投资大量涌入大宗商品期货,因为他表明,在计算机化的交易规则下,“在随机性的边缘”是有可能获利的。使用Carter, Rausser和Schmitz(1983)的方法,我们发现金融化影响了期货市场中的凯恩斯风险溢价,因为市场变得过度拥挤投机资金。
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引用次数: 1
S&P 500 Microstructure Noise Components: Empirical Inferences from Futures and ETF prices 标准普尔500指数微观结构噪声成分:来自期货和ETF价格的经验推断
Pub Date : 2020-10-30 DOI: 10.2139/ssrn.2435853
Stephen J. Taylor
By studying the differences between futures prices and exchange-traded fund prices for the S&P 500 index, original results are obtained about the distribution and persistence of the microstructure noise component created by bid/ask spreads and discrete price scales. The bivariate density of this component for futures and ETF prices is estimated from high-frequency prices, to provide estimates of the marginal noise densities and measures of noise dependence across the markets studied. Properties of the residual microstructure noise, created by factors other than discrete prices, are also estimated. The residual component has more variation and less persistence than the discrete-price component during the period examined, from January 2010 to December 2012.
通过对标普500指数期货价格和交易所交易基金价格差异的研究,获得了买卖价差和离散价格尺度所产生的微观结构噪声成分的分布和持久性的原始结果。从高频价格中估计期货和ETF价格的二元密度,以提供对所研究市场的边际噪声密度和噪声依赖性的估计。由离散价格以外的因素产生的残余微观结构噪声的性质也进行了估计。在2010年1月至2012年12月期间,残差分量比离散价格分量变化更大,持久性更弱。
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引用次数: 0
Determinants of Herding Behavior in The Time Of COVID-19: The Case of Egyptian Stock Market Sectors COVID-19时期羊群行为的决定因素:以埃及股市部门为例
Pub Date : 2020-10-23 DOI: 10.2139/ssrn.3717995
Samira Allam, Mansour Abdelrhim, Mahmoud Mohamed
This paper attempts to research in two parts, the first part aims to study the Herding Behavior in the sectors of the Egyptian Stock Exchange, when the second part aims to study the factors that affect the Herding Behavior according to the identification of those factors. Factors based on the presentation of previous literature related to herd behavior, and these factors are represented in the exchange rate, Stock trading volumes as an indicator of Liquidity, stock market returns, and indicators of the spread of the Corona virus represented in the number of cumulative cases and deaths according to the population in Egypt. During the period from 1/3/2020 to 31/7/2020. Sectors are five sectors of 76 companies, that have dispersion decrease (CSSD), and the sectors are (Basic Resources, Banks, Travel & Leisure, Health Care & Pharmaceuticals, Food, Beverages and Tobacco). The results of the multiple regression models for the sectors in which herd behavior appeared were as follows: - Basic resources determination coefficient (R2) (52.24%), and the variables determining herd behavior in the sector are variables (Corona virus Cumulative Cases, Cumulative Corona virus deaths).- Banks determination coefficient (R2) (66.85%), and the variables determining herd behavior in the sector are variables (Stock Market Return, Sector Trading Volumes, Corona virus Cumulative Cases, Cumulative Corona virus deaths).- Travel & Leisure determination coefficient (R2) (49.04%), and the variables determining herd behavior in the sector are variables (Stock Market Return, Exchange Rate, Sector Trading Volumes, Corona virus Cumulative Cases, Cumulative Corona virus deaths).- Health & Care Pharmaceuticals determination coefficient (R2) (41.84%), and the variables determining herd behavior in the sector are variables (Exchange Rate, Corona virus Cumulative Cases, Cumulative Corona virus deaths).- Food, Beverages and Tobacco determination coefficient (R2) (58.87%), and the variables determining herd behavior in the sector are variables (Stock Market Return, Sector Trading Volumes, Corona virus Cumulative Cases, Cumulative Corona virus deaths).
本文试图分两部分进行研究,第一部分旨在研究埃及证券交易所板块的羊群行为,第二部分旨在通过对这些因素的识别来研究影响羊群行为的因素。根据先前文献介绍的与羊群行为相关的因素,这些因素以汇率、作为流动性指标的股票交易量、股票市场回报以及以埃及人口累计病例数和死亡人数为代表的冠状病毒传播指标来表示。2020年3月1日至2020年7月31日。行业是分散度下降(CSSD)的76家企业中的5个行业,分别是基础资源、银行、旅游休闲、保健制药、食品饮料、烟草。—基本资源决定系数(R2)为52.24%,决定部门群体行为的变量为冠状病毒累计病例、冠状病毒累计死亡等变量。-银行决定系数(R2)(66.85%),决定行业从众行为的变量是变量(股票市场回报、行业交易量、冠状病毒累计病例、冠状病毒累计死亡)。-旅游和休闲决定系数(R2)(49.04%),决定该行业从众行为的变量是变量(股票市场回报、汇率、行业交易量、冠状病毒累计病例、冠状病毒累计死亡)。-卫生与保健药品决定系数(R2)(41.84%),决定该行业群体行为的变量是变量(汇率、冠状病毒累积病例、冠状病毒累积死亡)。-食品、饮料和烟草的决定系数(R2)(58.87%),决定该行业羊群行为的变量是变量(股票市场回报、行业交易量、冠状病毒累计病例、冠状病毒累计死亡)。
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引用次数: 4
Please Mind the Spread. Impact of Sovereign Default Risk on Bond Portfolio Flows of Emerging Asian Economies during COVID-19 Pandemic 请注意价差。新冠疫情期间主权违约风险对亚洲新兴经济体债券投资组合流动的影响
Pub Date : 2020-10-15 DOI: 10.2139/ssrn.3711145
J. o, W. Wan
This paper examines the impact of COVID-19 pandemic on bond portfolio flows in Asian emerging market economies. We show that the outbreak of COVID-19 pandemic magnified the impact of sovereign default risk on bond portfolio outflows, it also leaded to a higher volatility of bond portfolio flows in longer term. This finding suggests that proper sovereign credit risk management might be particularly important to prevent negative impact caused by unstable bond portfolio flows during the crises.
本文研究了2019冠状病毒病大流行对亚洲新兴市场经济体债券投资组合流动的影响。我们发现,新冠肺炎疫情放大了主权违约风险对债券投资组合流出的影响,并导致债券投资组合流动在较长期内的波动性更高。这一发现表明,在危机期间,适当的主权信用风险管理可能对防止不稳定的债券投资组合流动造成的负面影响尤为重要。
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引用次数: 0
Encoded Value-at-Risk: A Predictive Machine for Financial Risk Management 风险价值编码:金融风险管理的预测机器
Pub Date : 2020-10-15 DOI: 10.2139/ssrn.3712704
H. Arian, M. Moghimi, Ehsan Tabatabaei, S. Zamani
Measuring risk is at the center of modern financial risk management. As the world economy is becoming more complex and standard modeling assumptions are violated, the advanced artificial intelligence solutions may provide the right tools to analyze the global market. In this paper, we provide a novel approach for measuring market risk called Encoded Value-at-Risk (Encoded VaR), which is based on a type of artificial neural network, called Variational Auto-encoders (VAEs). Encoded VaR is a generative model which can be used to reproduce market scenarios from a range of historical cross-sectional stock returns, while increasing the signal-to-noise ratio present in the financial data, and learning the dependency structure of the market without any assumptions about the joint distribution of stock returns. We compare Encoded VaR out-of-sample results with eleven other methods and show that it is competitive to many other well-known VaR algorithms presented in the literature.
风险度量是现代金融风险管理的核心。随着世界经济变得越来越复杂,标准的建模假设被打破,先进的人工智能解决方案可能为分析全球市场提供正确的工具。在本文中,我们提供了一种新的测量市场风险的方法,称为编码风险价值(Encoded VaR),它基于一种称为变分自编码器(VAEs)的人工神经网络。编码VaR是一种生成模型,可用于从一系列历史横截面股票收益中再现市场情景,同时增加财务数据中存在的信噪比,并在不假设股票收益联合分布的情况下学习市场的依赖结构。我们将编码VaR的样本外结果与其他11种方法进行了比较,并表明它与文献中提出的许多其他知名VaR算法具有竞争力。
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引用次数: 5
Unsecured Credit Supply Risk and Bond Prices 无担保信贷供应风险与债券价格
Pub Date : 2020-10-14 DOI: 10.2139/ssrn.3725031
P. Mabille
Changes in credit supply induce large and frequent variations in households' access to unsecured debt. They generate a novel financial precautionary motive, which compounds the classical motive associated with idiosyncratic income risk, as borrowers accumulate risk-free bonds to hedge against them. Using a structural model, I estimate that this motive is an important driver of Treasury rates over the business cycle. It explains the historically low level of real rates in the last decade despite consumption growth, solving a "post-Great Recession risk-free rate puzzle". It is also critical for the volatility and comovement of household balance sheet and macroeconomic moments.
信贷供应的变化导致家庭获得无担保债务的机会发生巨大而频繁的变化。它们产生了一种新的金融预防性动机,它与与特殊收入风险相关的经典动机相结合,因为借款人积累无风险债券以对冲风险。使用结构模型,我估计这一动机是商业周期中国债利率的重要驱动因素。它解释了在消费增长的情况下,过去10年实际利率处于历史低位的原因,解决了“大衰退后无风险利率之谜”。它对家庭资产负债表和宏观经济形势的波动和变动也至关重要。
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引用次数: 0
期刊
Econometric Modeling: Capital Markets - Risk eJournal
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