Stock Market Mean Reversion and the Optimal Equity Allocation of a Long-Lived Investor

This paper solves numerically the intertemporalconsumption and portfolio choiceproblem of an infinitely-lived investor whofaces a time-varying equity premium.The solutions we obtain are very similarto the approximate analytical solutionsof Campbell and Viceira (1999), except atthe upper extreme of the state spacewhere both the numerical consumption andportfolio rules flatten out.We also consider a constrained version ofthe problem in which the investor facesborrowing and short-sales restrictions.These constraints bind when the equitypremium moves away from its mean in eitherdirection, and are particularly severe forrisk-tolerant investors. The constraints havesubstantial effects on optimalconsumption, but much more modest effects onoptimal portfolio choice in theregion of the state space where they are notbinding.     

我国微观主体资产选择行为对货币需求结构的影响

我国经济开放程度日益增加,经济转型程度逐步加深,处于经济转型期的居民、企业、金融机构等微观主体的资产选择行为发生了重要变化。文章对我国经济主体的资产选择行为对货币需求影响的作用机理进行深入的研究。通过不同样本区间的比较,分析宏观大环境发生变化的条件下,我国微观主体的资产选择行为对我国货币需求的影响路径,并根据实证结果提出保持较高利率水平下合理的利率市场化形成机制的政策建议。     

Impact of the global financial crisis on Islamic and conventional stocks and bonds

This study explores the impact of the global financial crisis (GFC) on Islamic and conventional stock and bond indices in 11 Islamic and eight non‐Islamic countries. We find that there are benefits of Islamic stocks during the GFC, particularly during the early stage of the crisis because Islamic institutions are prohibited from holding sub‐prime mortgage securities and derivatives. The strongest benefits of Islamic stocks are in the UK and USA. We conclude that there are benefits of risk reduction and stability for Islamic stocks during a financial crisis, although not necessarily during a global recession.     

Conditions Ensuring the Decomposition of Asset Demand for All Risk-Averse Investors

Abstract

The paper explores how the demand for a risky asset can be decomposed into an investment effect and a hedging effect by all risk-averse investors. This question has been shown to be complex when considered outside of the mean-variance framework. Dependence among returns on the risky assets is restricted to quadrant dependence and it is found that the demand for one risky asset can be decomposed into an investment component based on the risk premium offered by the asset and a hedging component used against the fluctuations in the return on the other risky asset. The paper also discusses how the class of quadrant-dependent distributions is related to that of two-fund separating distributions. This contribution opens up the search for broader distributional hypotheses suitable to asset demand models. Examples are discussed.     

Dynamic spillover effects among green bond,renewable energy stocks and carbon markets during COVID-19 pandemic: Implications for hedging and investments strategies

This study has been inspired by the emergence of socially responsible investment practices in mainstream investment activity as it examines the transmission of return patterns between green bonds, carbon prices, and renewable energy stocks, using daily data spanning from 4th January 2015 to 22nd September 2020. In this study, our dataset comprises the price indices of S&P Green Bond, Solactive Global Solar, Solactive Global Wind, S&P Global Clean Energy and Carbon. We employ the TVP-VAR approach to investigate the return spillovers and connectedness, and various portfolio techniques including minimum variance portfolio, minimum correlation portfolio and the recently developed minimum connectedness portfolio to test portfolio performance. Additionally, a LASSO dynamic connectedness model is used for robustness purposes. The empirical results from the TVP-VAR indicate that the dynamic total connectedness across the assets is heterogeneous over time and economic event dependent. Moreover, our findings suggest that clean energy dominates all other markets and is seen to be the main net transmitter of shocks in the entire network with Green Bonds and Solactive Global Wind, emerging to be the major recipients of shocks in the system. Based on the hedging effectiveness, we show that bivariate and multivariate portfolios significantly reduce the risk of investing in a single asset except for Green Bonds. Finally, the minimum connectedness portfolio reaches the highest Sharpe ratio implying that information concerning the return transmission process is helpful for portfolio creation. The same pattern has been observed during the COVID-19 pandemic period.     

A sequential pricing framework for corporate securities: The case of rating-trigger step-up/-down bonds

We develop a sequential pricing framework in a continuous time cash flow model allowing for repeated valuation of different cash flow claims. One claim is valued until a prespecified boundary is hit, which is subsequently used as the new valuation starting point for the next claim. This highly flexible pricing framework is applied to the pricing of rating-trigger step-up/-down corporate bonds, the coupon payments of which depend on the issuing company’s credit rating. We present a simple closed-form pricing solution for this type of bonds including both a step-up and step-down threshold, as well as a lower default boundary.     

Racial and ethnic differences in housing demand: An econometric investigation

This article empirically investigates the sources of housing demand differences between racial (black and white) and ethnic (Hispanic and non-Hispanic) groups. We estimate the tenure-adjusted housing demand equations from the 1989 American Housing Survey (AHS) national sample data and measure the effects of different sources for demand disparities in housing demand, but much less so in explaining racial differences in housing demand. Specifically, 98% (96%) of the housing demand differences between Hispanic and non-Hispanic owners (renters) is due to differences in group endowments. For the racial groups, 29% (51%) of the housing demand differences between black and white owners (renters) is attributable to differences in group endowments. The residual differences explain 71% and 49% of the black-white differentials for owners and renters, respectively. The residual components in our model capture the effect of institutional and structural factors intrinsic to the housing market (such as racial discrimination or residential segregation) and/or the influence of important omitted or harder-tomeasure variables correlated with race or ethnicity (such as wealth, employment history, credit history, and cultural differences in housing consumption).     

Asset allocation in markets with contagion: The interplay between volatilities,jump intensities,and correlations

We study the impact of financial contagion on the dynamic asset allocation problem of a CRRA investor facing an incomplete market with two risky assets. We apply a Markov chain regime-switching framework with state-dependent jump intensities, diffusion volatilities and diffusion correlations. The key model feature that a switch to the bad contagion regime is triggered by a loss in one of the risky assets allows for the implementation of a hedging demand against contagion risk. Moreover, a state-dependent diffusion correlation combined with heterogeneity in jump intensities and volatilities can, e.g., generate a flight to quality effect upon a systemic jump.     

公司债券的多头监管、路径依赖与未来发展框架

公司债券市场受益外因的蓬勃发展更应激发对其自身可持续发展内力的探索。改变公司债券只是作为政府配置信贷资源手段的定位,授予企业根据财务需求安排债务融资的权利;协调三部委主导不同债券规则的多头监管,建立统一合理的监管体制;改变计划性的债券规则和分割的债券市场,建立市场化的统一债券规则和交易机制,是未来我国公司债券市场走向繁荣的必由之路。     

Investment strategies in the long run with proportional transaction costs and a HARA utility function

We consider an agent who invests in a stock and a money market in order to maximize the asymptotic behaviour of expected utility of the portfolio market price in the presence of proportional transaction costs. The assumption that the portfolio market price is a geometric Brownian motion and the restriction to a utility function with hyperbolic absolute risk aversion (HARA) enable us to evaluate interval investment strategies. It is shown that the optimal interval strategy is also optimal among a wide family of strategies and that it is optimal also in a time changed model in the case of logarithmic utility.     

A portfolio based theory of excessive foreign borrowing and capital control in a small open economy

We develop a simple model of portfolio choice in a mean variance framework to address the issue of international borrowing and financial crisis. Instead of adverse selection or moral hazard of lending and borrowing activities we emphasise the role of exchange rate movement. Syndicated borrowing by way of internalising the aggregate effect tends to restrict excessive borrowing from external source. However, this may undermine the welfare consequences by further aggravating the extent of risk undertaken in the process. There is a built-in externality in the model that leads to over exposure to foreign currency debt and readily calls for intervention by the government. Government intervention by way of a tax on foreign borrowing may help restrain the amount of external debt and implement the first best.     

The effectiveness of interest-rate futures contracts for hedging Japanese bonds of different credit quality and duration

This study investigates the effectiveness of the Tokyo Stock Exchange (TSE)-traded Japanese 10-year JGB futures contract to hedge portfolios of Japanese bonds of differing maturity and credit quality. The bond portfolios examined are Government, AAA-, and AA-rated Eurobonds with maturities of 2, 3, 5, 7, 10, and 20 years. Consistent with the recent literature, the study employs univariate methods for calculating hedge ratios based on levels, first differences, and percentage change of each series. Out-of-sample forecasting is used to determine the effectiveness of the calculated hedge ratios for each of the bond portfolios and to determine which approach to calculating hedge ratios is the most effective. The results show that this particular futures contract does provide a good hedge, particularly for those bond terms closest to the 10-year term of the contract. There is some evidence, although not strong, that JGBs are better hedged than AAA and AA bonds. Investors should take some caution when using this futures contract to hedge bond portfolios of different maturities and credit ratings.     

The Role of Book Income, Web Traffic, and Supply and Demand in the Pricing of U.S. Internet Stocks

In this paper I assess the degree of similarity in the cross-sectionalpricing of Internet and non-Internet stocks during the tumultuousyear of 2000. Despite large differences in their economic fundamentals, I find that the equity market values of Internetfirms with immaterial web traffic, firms that are randomly selected, and firms that went public atthe same time as Internet firms are similarly related to analysts' forecasts of earnings in 2001 andthe long-term rate of growth in earnings. This is not the case for firms with intensive web traffic.I also find that at the peak of Internet prices in March 2000 the market rewarded losses ofweb-traffic-intensive firms but did not reward profits, while after the peak the market reversed itsview, rewarding profits but not losses. Beyond earnings, web traffic is significantly positivelypriced both at and after the Internet peak. However, I find no evidence that two proxies forsupply and demand forces – the degree of public float and short interest – are value-relevantfor Internet firms. Overall, I argue that there are enough similarities in the cross-sectional pricingof Internet and non-Internet firms to make it unlikely that the pricing of Internet stocks during2000 was entirely irrational. Moreover, any irrationality in the prices of Internet stockscannot be linked to public float and short interest.     

Deep neural network framework based on backward stochastic differential equations for pricing and hedging American options in high dimensions

We propose a deep neural network framework for computing prices and deltas of American options in high dimensions. The architecture of the framework is a sequence of neural networks, where each network learns the difference of the price functions between adjacent timesteps. We introduce the least squares residual of the associated backward stochastic differential equation as the loss function. Our proposed framework yields prices and deltas for the entire spacetime, not only at a given point (e.g. t?=?0). The computational cost of the proposed approach is quadratic in dimension, which addresses the curse of dimensionality issue that state-of-the-art approaches suffer. Our numerical simulations demonstrate these contributions, and show that the proposed neural network framework outperforms state-of-the-art approaches in high dimensions.     

Using futures contracts for corporate hedging: The problem of expiry and a possible solution

Companies using futures contracts for hedging purposes need to roll over their contracts if the maturity of their exposure exceeds that of the futures contracts. This entails basis risk that can reduce significantly the effectiveness of the hedge. In this paper an alternative form of futures contract is proposed. the contract never expires and can be used for long-term hedging without the need for rolling-over into a new contract. the contract is shown to be equivalent to a portfolio of conventional futures contracts of differing maturities. Its price is determined by arbitrage against the underlying asset.     

Nominal uncertainty,real uncertainty and macroeconomic performance in a time-varying asymmetric framework: Implications for monetary policy

This study examines the dynamic causal links and volatility spillovers of inflation, output growth and their uncertainties in four South Asian countries, namely, Pakistan, India, Bangladesh and Sri Lanka by utilizing asymmetric GARCH family models. Our empirical evidence supports a number of important conclusions. There is an overwhelming support for Friedman-Ball hypothesis of positive inflation-uncertainty trade-off for all countries excluding India and Sri Lanka. The Cukierman-Meltzer’s idea that inflation uncertainty generates inflation, hold for Bangladesh and Sri Lanka only and the Holland’s hypothesis of negative influence of inflation uncertainty on level inflation is supported by India only. The positive influence of output uncertainty on inflation (Devereux (1989) hypothesis) is supported by all countries excluding Bangladesh while nominal uncertainty (real uncertainty) has negative (positive) effect on output growth in Pakistan (Bangladesh). Output growth is reducing real uncertainty in all countries excluding Sri Lanka and nominal uncertainty in Pakistan only. There is significant negative relationship between inflation and output growth for Pakistan only while real uncertainty is positively (negatively) related with nominal uncertainty in India (Bangladesh). The estimated results are almost robust with the simultaneous estimation procedure for testing the main hypotheses. In general, there is asymmetric effect and persistence of the GARCH parameters for all countries. The study suggests that the concerned central banks should pay more attention to the effects of macroeconomic uncertainty and should focus their monetary policy strategy on stabilizing both output growth and inflation.     

The imperatives for organizational governance in a large charity: a strategic choice perspective

This paper explains the factors that shaped governance practices in a large charity. The author uses strategic choice theory in an analysis of case study data to bring into calculation the internal and external factors that impacted the roles of board members and executives. The paper finds overall support for a powersharing model and contributes to our understanding of governance in nonprofit organizations.     

The Role and Impact of Financial Advisors in the Market for Municipal Bonds

Significantly more and more issuers of municipal bonds use the services of financial advisors during the bond issuance process. We investigate the benefits to issuers and market participants arising from the role of financial advisors in the issuance of municipal bonds. Using a large sample of 9,493 tax-exempt municipal bonds, we show that financial advisors have significant impact on borrowing costs, reoffering yields and underwriter gross spreads. Our results are more pronounced for revenue bonds, particularly for negotiated revenue issues. In addition, our results show significant advantages to using a financial advisor for refunding issues supporting the view that financial advisors play important roles for more complex issues. Our results are consistent with the interpretation that financial advisors provide important and useful services resulting in monitoring and information asymmetry reduction benefits accruing to issuers and market participants.      

Financial progress and the stability of long-run money demand: Implications for the conduct of monetary policy in emerging economies

This paper examines whether recent financial changes in three emerging market economies in the Gulf region (Bahrain, the UAE, and Qatar) have distorted the character and the stability of their underlying long-run money demand relations. Money demand instability prompts concerns about the appropriateness of targeting monetary aggregates and could weaken the presumed link between monetary policy and its ultimate objectives. Our results suggest that the quick pace of financial changes in the three emerging market economies did not cause undue shifts in their equilibrium money demand relations. Further evidence from direct tests of cointegration stability indicates the superiority of targeting M1 in the UAE and M2 for Qatar. In Bahrain, both M1 and M2 prove equally appropriate to guide monetary policy. Thus, despite the wave of financial developments that have recently swept the three Gulf economies, the evidence suggests that monetary authorities in these countries should maintain a close watch on monetary growth as a principal policy guide.