The effect of early resolution of uncertainty on the valuation of assets: A dichotomy into market and non-market information

We reconsider how the temporal resolution of uncertainty about the future payoffs from capital assets affects the initial valuation of these assets. Our results regarding valuation indicate that, in an intertemporal CAPM framework, the early resolution of market uncertainty leads to an increase in the value of the market portfolio. The values of individual assets change in direct proportion to their betas. We reconcile the differing conclusions of Ross (1989) and Epstein and Turnbull (1980) regarding the early resolution of what they term idiosyncratic and asset specific information respectively.     

环境不确定性、多元化经营与权益资本成本

以2009~2012年我国 A 股上市公司为研究样本,检验环境不确定性及多元化经营对公司权益资本成本的影响。研究发现,环境不确定性越高则公司的权益资本成本也越高,同时在高环境不确定性背景下,多元化经营将有助于缓解环境不确定性与权益资本成本之间的正相关关系;进一步,对于政府控制公司,多元化经营能够更显著地降低环境不确定性所导致的代理问题,并且若其所处地区政府干预程度较低,则多元化经营缓解环境不确定性与权益资本成本之间正相关关系的作用越大。     

XBRL财务报告审计模型及实现机制:一种框架研究

本文探讨了可扩展商业报告语言(eXtensible Business Reporting Language,以下简称XBRL)财务报告和传统财务报告并存环境下和XBRL财务报告替代传统报告环境下的审计框架模型以及应对机制。本文认为在二者并存环境下,审计人员的基本职责是确定被审计单位管理层对XBRL财务报告中商业事实、元素映射和元素拓展三个层次的认定是否恰当;在替代环境下,创建审计信息分类标准是XBRL财务报告审计得以高效率、低风险实施的保证机制;审计工作底稿将审计目标、审计程序和审计认定三位一体地结合起来,以审计人员熟悉的审计工作底稿来组织和构造审计分类标准更可行、更易用。     

Using information quality for volatility model combinations

This paper proposes updated methodology for volatility model combinations which account for the informational content of innovations. An adaptive measure of information quality serves for the selection of model weights in order to improve daily volatility forecasts. The information quality proxy is related to the size of unexpected shocks in the volatility process. Our approach is illustrated in an empirical study with German stock market data.     

经济政策不确定性、意见分歧与股价崩盘风险

基于中文媒体构建的中国经济政策不确定性指数,研究经济政策不确定性对股价崩盘风险的影响效果和机制。结果显示:经济政策不确定性的提高会显著加剧股价崩盘风险,这表明经济政策不确定性是崩盘风险的诱因之一。通过对影响机制检验发现,经济政策不确定性对股价崩盘风险的正向作用,随着投资者意见分歧的增加而加强。在宏观经济良好时期,非国有股权和规模较大的企业,经济政策不确定性并未明显加剧股价崩盘风险,甚至起到了缓解股价崩盘风险的作用。     

金融科技发展对城市金融韧性的影响研究

依据2011—2021年我国283个城市面板数据,考量金融科技发展对城市金融韧性的影响。结果显示：金融科技发展主要通过提升金融体系运行效率与金融服务实体经济效能,进而增强城市金融韧性。异质性分析显示,金融科技发展对中、西部地区以及非中心城市金融韧性的提升作用更显著。经济政策不确定性对金融科技发展增强城市金融韧性具有负向调节作用,高市场化水平则具有正向调节作用。鉴于此,应持续优化金融科技发展政策体系,实施差异化区域发展战略,进一步完善政策稳定性保障机制,深入推进市场化改革进程。     

The Optimal Construction of Internationally Diversified Equity Portfolios Hedged Against Exchange Rate Uncertainty

Much of the empirical work on hedging exchange rate exposure in portfolios of financial assets has used a unitary hedge ratio, or a currency overlay. Alternatively, the currencies themselves can be treated as assets and the position in them optimized. This study empirically tests whether the ex post results of recent studies, which conclude that currencies should themselves be optimized, stand up under parameter uncertainty. It may very well be that ex ante, when parameter inputs must be estimated from historical data, the attempt to determine the optimal currency weights results in inferior performance in comparison to using a simple unitary hedging strategy, or even unhedged international investment. The results suggest that a local currency return unitary hedging strategy works best in the presence of parameter uncertainty.     

Does the source of uncertainty matter? The impact of financial,newspaper and Twitter-based measures on U.S. banks

This study examines if the source of uncertainty (newspaper, Twitter, financial market) matters in its impact on bank stock returns in the United States. By applying discrete wavelet transformation, we model directional spillovers and Granger causality between uncertainty and bank returns for different time horizons. Our results demonstrate that this distinction between time horizons is crucial. Although newspaper and Twitter-based measures are correlated, they capture a different source of investor perception. Twitter-based uncertainty adversely affects bank stocks in the short run, while newspaper-based policy uncertainty is relevant in the medium run. Financial-based uncertainty, VIX, is the most important factor. Moreover, we find that the impact of uncertainty on bank returns is stronger during the COVID-19 pandemic and for banks with a high ratio of loans to total assets and large off-balance-sheet activities.     

经济不确定性对我国上市公司研发投入同群效应的影响

我国A股上市公司研发投入会受到同群企业研发投资行为的正向影响,经济的不确定性会对上市公司的研发投入产生显著的抑制作用,这是由于企业对政策导向把握不准确,从而实施相对稳健的投资策略导致的.经济的不确定性会加剧上市公司研发投入的同群效应,同行业的企业更倾向于模仿行业中的领导企业,非国有企业更倾向于模仿行业中的国有企业.因此...     

Information and the Cost of Capital in a Mean‐Variance Efficient Market

Before information ? arrives, market observers must be uncertain whether the stock price conditioned on ? will be higher or lower than the current price. Otherwise there is an obvious arbitrage opportunity. By assuming this minimal condition of efficient markets, it is shown under the mean‐variance CAPM that information that leaves the future value of a firm more certain, in the sense that its perceived covariance with the market is reduced towards zero, can lead to a higher expected return on that asset. A further result is that it is theoretically possible that the required return on the stock will necessarily fall after observing signal ?, or (in other circumstances) that it will necessarily rise. In general, information that allows better discrimination between firms leads some firms to have higher costs of capital and other firms to have lower costs of capital. Less obviously, better discrimination between firms can induce a higher average cost of capital across the market.     

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.     

Taxation, Uncertainty, and the Cost of Equity

Traditionally the pre-tax cost of capital is a function of the interest rate and the tax system. However, uncertainty implies that the market's required return is no single interest rate, but depends on risk. Different tax systems split risk differently between firm and government. Thus the required expected return after corporate taxes depends on the tax system. Expressions for this are derived, based on a CAPM-type model. The weighted average cost of capital is decreasing in the tax rate, even for fully equity financed projects. This effect can be substantial, but is neglected in much of the literature.     

The Effect of the Alternation in the Ruling Party on Three-Factor Risks and Returns in ETF: The Case of Presidential Elections in Taiwan

This study discusses the effect of alternation in the ruling party in presidential elections on three-factor risks and returns of the three main exchange-traded funds (ETFs) in Taiwan, which has an unclearly defined international status and whose citizens have the right to vote directly for the president. We find that after the ruling party has been determined, in the period between Election Day and inauguration day, both the stock market and ETFs show a slight rise in prices. This suggests that most investors are initially optimistic after the election results have been announced. Meanwhile, the reverse book-to-market risk value deteriorates significantly. These results indicate that political uncertainty increases the risk premium of market factors and reverse book-to-market factors for some ETFs.