新冠肺炎疫情、金融市场震荡与金融危机

新型冠状病毒感染肺炎疫情在全球快速蔓延后,美国等国家金融市场出现大幅度震荡,历史罕见。金融市场震荡是疫情影响投资者信心,金融市场本身的风险需要释放,以及经济基本面悲观预期等因素共同作用的结果。目前来看,疫情对实体经济造成冲击,疫情应对情况也在很大程度上决定了金融市场震荡是否演化为全球金融危机,国外金融市场震荡对国内金融市场的传导需要审慎理性处理。     

Economic costs of alternative monetary policy responses to speculative currency attacks

The outcome of a speculative attack on the foreign exchange rate can be classified into three cases: (i) immediate depreciation of the nominal exchange rate, (ii) successful defense, or (iii) failed defense. This paper explores which of these outcomes yields the lowest cost in terms of output and unemployment in the short and medium run. Ex-ante the outcome of a speculative attack is uncertain, therefore the appropriate response of monetary authorities to a speculative attack depends on the cost of an immediate depreciation compared with that of the expected outcome of a currency defense. Our empirical analysis focuses on a sample of 73 emerging and developing countries over the 1960–2011 period. Our results indicate that an immediate depreciation is the policy response that is associated with a lower expected output loss and unemployment in the short run and it tends to be expansionary in the medium run. A defense, if successful, entails insignificant costs in the short run but, unlike an immediate depreciation, a successful defense is not expansionary in the medium run. If a defense fails, large output losses and an increase in unemployment ensue, at least in the short run.     

国际金融危机下的政策调整：宏观波动与微观行为如何联动

全球不平衡导致的金融危机在造成宏观经济大幅波动的同时,也对微观层次的企业和家庭带来了巨大冲击。因此,政策调整应致力于协调宏观波动与微观行为之间的关系,避免出现宏观与微观的不一致性。为此,量化宽松的货币政策应把握经济增长与通货膨胀之间的关系,财政政策应克服“二次探底”的潜在挑战,而人民币国际化则将增强中国在国际货币体系中的话语权,并从根本上克服被迫的外汇储备累积和“货币错配”。     

The discrete and differential impact of monetary policy

This study exploits a unique feature of the Australian monetary policy environment to determine whether economic recovery can be stimulated via central bank communications. This study finds that unexpected monetary policy announcements and communications have a significant and comparable impact on the value and volatility of the Australian foreign exchange market, suggesting that they can be used interchangeably to stimulate economic recovery. However, further analysis reveals that the state of the economy influences this impact. Specifically, during poor economic states, monetary policy actions speak louder than words, an adage that in this context provides actionable information for central bank regulators.     

Economic policy uncertainty and environmental governance company volatility: Evidence from China

This study primarily investigates whether China’s economic policy uncertainty (EPU) can predict the environmental governance index volatility, which selects companies regarding environmental protection such as sewage treatment, solid waste treatment, air treatment, and energy saving. Empirical results reveal that China’s EPU index can predict the environmental governance index volatility. Furthermore, even during periods of fluctuating volatility and the COVID-19 pandemic, China’s EPU index can reliably forecast the environmental governance index volatility. This paper tries to provide new evidence regarding the connection between EPU and environmental governance companies’ stock volatility.     

Comparing COVID-19 with the GFC: A shockwave analysis of currency markets

I analyze the shockwave effect of the COVID-19 pandemic on currency markets, with a comparison to the global financial crisis (GFC), employing Kapetanios m-break unit root test, investigations of standalone risk measures—downside variance, upside risk, volatility skewness, Gaussian Value at Risk (VaR), historical VaR, modified VaR—and Diebold–Yilmaz volatility spillover analysis. Standalone risk analysis shows that the turmoil in the initial months of COVID-19 was not as severe as that in the GFC. However, examination of co-movements and volatility spillovers illustrates a different scenario. According to the results of the static connectedness measure of Diebold–Yilmaz, the shockwave of the COVID-19 pandemic in the total volatility spillover is about eight times greater than that of the GFC. Among standalone risk measures, the results closest to this finding are obtained from volatility skewness analysis. Additionally, of six foreign exchange rates, the Brazilian real and Turkish lira are the currencies experiencing the greatest increase in received volatility during the GFC and the COVID-19 pandemic, respectively. These findings suggest the severe effect of crises on emerging financial markets.     

关于货币政策在经济调整中的作用和面临的风险

该文通过分析重温了货币主义的主要观点,对于货币政策在本轮危机中扮演的角色以及过于灵活的相机抉择式的微调模式提出质疑;并回到货币主义的立场,以货币数量轮的视角来评判当前美国货币政策操作。文章认为货币政策不应过多关注资本市场,保持货币和基准利率相对平稳对于宏观经济运行至关重要。     

美国次贷危机与金融制度重构

美国次贷危机暴露出的种种问题表明,系统性风险的来源已经发生了变化,而金融基础制度的安排,无论是国际金融风险监测预警框架,还是监管制度、会计标准和评级体系,却未跟上金融市场的发展。为了恢复投资人信心,提升金融市场效率,亟需重构金融制度。     

当前的金融和经济危机：一个新自由资本主义的系统性危机

本文给出了这样一种情况,即2008年从美国开始的金融和经济危机意味着新自由资本主义系统性危机的肇始。在过去几十年里推动了一系列长期经济扩张的一些新自由资本主义的制度特征,也同样产生了一种长期的趋势,这种趋势已经导致了系统性的危机。本文还考虑了经济重构的几种可能的未来方向。     

Monetary policy and covered interest parity in the post GFC period: Evidence from the Australian dollar and the NZ dollar

After the global financial crisis (GFC), most major currencies had higher interest rates than the US dollar on forward contract because of increased demand for the US dollar as international liquidity. However, unlike the other major currencies, the Australian dollar and the NZ dollar had lower interest rates than the US dollar on forward contract in the post GFC period. The purpose of this paper is to explore why this happened through estimating the covered interest parity (CIP) condition. In the analysis, we focus on a unique feature of Australia and New Zealand where short-term interest rates remained significantly positive even after the GFC. The paper first constructs a theoretical model where increased liquidity risk causes deviations from the CIP condition. It then tests this theoretical implication by using daily data of six major currencies. We find that both money market risk measures and policy rates had significant effects on the CIP deviations. The result implies that unique monetary policy feature in Australia and New Zealand made deviations from the CIP condition distinct on the forward contract.     

The double entry structural constraint on the econometric estimation of accounting variables

ABSTRACT

This paper develops a structural system for estimating accounting variables, within which the deterministic relationships inherent in financial statement articulation are clearly defined in the econometric model. The key proposition of the paper lies in the treatment of the financial statements as a matrix of codetermined information constrained by double entry, where the expected value of each of the individual items that comprise the financial statements will be mirrored elsewhere in the system with a different sign. Given that the change in net operating assets shares the same variation as the change in net financial claims, it is shown, by formally identifying the articulation, that empirical application will yield increased precision and improved efficiency by comparison to the more traditional methods that fail to specify the structural double entry property.     

Bank systemic risk: An analysis of the sovereign rating ceiling policy and rating downgrades

We investigate the impact that the sovereign ceiling policy has on financial stability. In the event of a sovereign rating downgrade, we find that the rating agencies' sovereign ceiling policy leads to a disproportionate downgrade of the most creditworthy financial institutions in the economy and results in increased systemic risk. This asymmetric variation in bank ratings also impairs equity growth that further exacerbates bank insolvency. Our results are robust to several matching techniques, such as propensity score matching and entropy balancing, falsification tests, subsample analyses, alternative empirical proxies and model specifications.     

Economic crisis and determinants of solvency in the insurance sector: new evidence from Spain

This paper analyses the factors that determine the solvency of insurance companies operating in Spain. The selected time span, from 2008 to 2015, encompasses a period of economic instability characterised by record low interest rates and low or even negative economic growth. Using a dynamic panel data model, we conclude that actual solvency margins are positively related to profitability, underwriting risk and a mutual-type organisation but inversely related to size, reinsurance use, longer-tailed business and life insurance specialisation. We also find that less concentrated markets and the context of an economic crisis decrease solvency margins.     

最优银行集中度之谜

本文通过对89组跨国数据的实证分析,系统研究了银行集中度和银行体系稳定性之间的关系。实证结果表明,银行集中度和银行稳定性之间的关系并不是过往文献所集中讨论的简单线性关系,而是存在一个最优的银行集中度区间(0.6,0.8],这一区间恰好位于样本均值附近,并向样本均值收敛;而当一国的银行集中度水平处于(0.8,0.9]时,银行体系的稳定性最低,极易发生银行危机。进一步的分析表明,在最优的银行集中度区间内,银行业的产业结构能较好地在适度竞争和盈利之间获得平衡,而隐藏在"最优银行集中度之谜"背后的机制极有可能是"优胜劣汰"这一自然法则在社会经济领域的再现。     

Economic stability under alternative banking systems: Theory and policy

In this paper we show in a thought experiment that in an economy where i) investors hold rational expectations, ii) output is generated by a linear homogeneous production function, and iii) real investment is allocated across sectors according to the CAPM, a fractional reserve banking system is not Pareto efficient and amplifies the business cycle. In developing these results we show that these three well known propositions in economics also imply a new view of the business cycle, one where the business cycle is described in terms of the dispersion of an ex-ante probability distribution. The policy implication of this analysis is that bank regulation should go further than the Volcker rule or the Vickers commission proposal by restricting bank investments to currency and deposit accounts on the central bank. Nonbank financial institutions should then carry out the financial intermediation function now carried out by banks. The paper proposes that post office banking perhaps augmented with blockchain technology sometime in the future is one way to implement the transition from fractional reserve banking to full reserve banking. While little academic work has been done on full reserve banking in the aftermath of the Great Crisis, it is interesting to note that it is part of banking reform proposals now (July 2016) before the parliament in Iceland and a special national referendum in Switzerland.     

全球金融危机的启示：价值的反思与体系的重构

2007年美国爆发的次贷危机,通过关国体系的贸易及投资传染链条,在影响全球经济的同时,也带来了人们对传统金融价值观的反思,迫使人们重新审视虚拟经济与实体经济、金融创新与金融稳定、混业经营与分业经营、自由放任与政府干预的关系。此外,金融危机的全球蔓延也考量了国际金融版图的稳定性,并给发展中国家（地区）带来了前所未有的挑战和机遇。     

金融市场对货币调控的反应与影响研究

2007年,随着经济金融形势的不断变化,我国货币政策紧缩程度不断加强。文章回顾了我国货币调控对货币、债券、外汇、股票这四个金融市场的影响,运用统计模型和一些量化工具描述了货币调控对各市场的影响程度;从资产负债运营和流动性管理等角度反映了本轮货币调控给各类金融机构带来的影响差别,并提出相关政策建议。     

Fiscal policy in Korea: Before and after the financial crisis

This paper examines the role of fiscal policy in the Korean financial crisis and the subsequent recovery from it. We specifically address three questions: Was Korea’s fiscal policy prior to the crisis conservative, or were there large hidden contingent liabilities not captured in the official budget balance? What were the main characteristics of fiscal policy in stimulating and restructuring the economy under the IMF stabilization program in Korea? How effective were the financial guarantee and public investment programs as part of the counter-cyclical fiscal policy in the recovery process from the crisis? To address these questions, we re-estimate the consolidated budget deficits in Korea by incorporating the quasi-fiscal activities of public funds and public enterprises using their micro balance-sheet data from 1972 to 2003.     

冰岛金融危机的起因、教训与启示

在全球金融危机的冲击下,冰岛成为第一个陷入困境而向IMF求助的发达国家。该文分析了冰岛金融危机的起因及教训,认为冰岛危机是自身经济发展失衡、金融过度膨胀且存在结构缺陷的后果;政府的金融监管与危机应对措施也负有重大责任。对其他国家都有着重要的警示意义。