共查询到20条相似文献，搜索用时 30 毫秒
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This paper aims to examine dynamic connectedness and hedging opportunities between the realized volatilities of clean energy ETFs and energy implied volatilities through Time-Varying Parameter Vector Autoregression Model (TVP-VAR) and Asymmetric Dynamic Conditional Correlation (ADCC) GARCH models. TVP-VAR analysis results show that dynamic connectedness increases during turbulence periods. We also determine that clean energy ETFs such as PBW, QCLN, SMOG, and TAN are net volatility transmitters. Surprisingly, OVX is a net volatility receiver, especially with the developments after the Paris Agreement in 2016.As a result of the ADCC GARCH analysis, we determine that the conditional correlation between clean energy ETFs and implied volatility ETFs is asymmetric, and negative information shocks increase the conditional correlation. Although OVX is a cheap alternative for hedging long position risks in clean energy ETFs, VXXLE is more effective than OVX in terms of hedging effectiveness. These findings provide insight for individual and institutional investors, and portfolio managers on how negative and positive shocks change the conditional correlation between assets at different levels. 相似文献
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This paper examines the spillovers and connectedness between crude oil futures and European bond markets (EBMs) having different maturities. We also analyze the hedging effectiveness of crude oil futures-bond portfolios in tranquil and turbulent periods. Using the spillovers index of Diebold and Yilmaz (2012, 2014), we show evidence of time-varying spillovers between markets under investigations, which varies between 65% and 83%. Moreover, three-month, six-month, one-year, three-year and thirty-year bonds and crude oil futures are net receivers of risk from other markets, whereas the remaining bonds are net contributors of risk to the other markets. Crude oil futures receive more risk from long-term than short-term bonds. Moreover, the magnitude of risk transmission is low for the pre-crisis and economic recovery periods. Crude oil futures market contributes significantly to the risk of other markets during the oil crisis and Brexit period. A portfolio risk analysis shows that that most investments should be in oil rather than bonds (except the short-term bonds). The hedge ratio is sensitive to market conditions, where the cost of hedging increases during GFC and ESDC period. Finally, a crude oil futures-bond portfolio offers the best hedging effectiveness during the COVID-19 pandemic period. 相似文献
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Abiot Tessema Rogier Deumes 《Journal of International Financial Management & Accounting》2018,29(2):105-130
This study investigates whether the Statement of Financial Accounting Standard No. 133 (SFAS 133) influences firms’ income smoothing via discretionary accruals decisions. Moreover, we investigate whether the level of hedge effectiveness and market volatility affects the impact of SFAS 133 on firms’ income smoothing via discretionary accruals decisions. Consistent with our predictions, we find a significant increase in income smoothing via discretionary accruals activity after the adoption of SFAS 133. We also find that income smoothing via discretionary accruals after the adoption of SFAS 133 increases with the level of hedge ineffectiveness. By contrast, we find that perfect hedgers do not engage in more income smoothing via discretionary accruals after the adoption of SFAS 133. Finally, we find that the higher the market volatility is the larger the income smoothing is via discretionary accruals after the adoption of SFAS 133. This implies that higher market volatility makes it more difficult for firms to meet hedge accounting requirements, thereby increasing unmanaged earnings volatility and income smoothing. Prior studies suggest that regulators are expressing concern about the effect of earnings management on the quality of reported earnings and the functioning of capital markets (e.g., Barton, 2001 ). In this regard, our findings imply that accounting standard setters should take into account the trade‐off between transparency and income smoothing. 相似文献
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A game contingent claim is a contract which enables both the buyer and the seller to terminate it before maturity. For complete markets Kifer [Finance and Stochastics 4 (2000) 443–463] shows a connection to a (zero-sum) Dynkin game whose value is the unique no-arbitrage price of the claim. But, for incomplete markets one needs a more general approach. We interpret the contract as a generalized non-zero-sum stopping game. For the complete case this leads to the same results as in Kifer [Finance and Stochastics 4 (2000) 443–463]. For the general case we show the existence of an equilibrium point under the condition that both the seller and the buyer have an exponential utility function. For other utility functions such a point need not exist in the context of incomplete markets. 相似文献
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We analyse the impact of the Engle and Granger (1987) article by means of its citations over time, and find evidence of a second life starting in the new millennium. Next, we propose a possible explanation of the success of this citation classic. We argue that the conditions for its success were just right at the time of its appearance, because of the growing emphasis on time series properties in econometric modelling, the empirical importance of stochastic trends, the availability of sufficiently long macroeconomic time series, and the availability of personal computers and econometric software for carrying out the new techniques. 相似文献
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Matthias M. Arnold Andreas W. Rathgeber Stefan Stöckl 《The Quarterly Review of Economics and Finance》2014,54(4):443-458
While literature provides several hedging theories, evidence on the corporate incentives to hedge remains ambiguous. We synthesize data of empirical studies via statistical meta-analysis to test different hedging hypotheses. To our knowledge, this constitutes the first application of such a methodology in financial economics. Our results imply that financial distress costs induce firms to hedge. We find weak evidence that the underinvestment problem and the dependence on costly external financing influence hedging behavior. Taxes and agency conflicts do not show explanatory power. Because statistical and narrative reviews yield different outcomes, we see various other application possibilities for meta-analysis in financial economics. 相似文献
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股指期货的套期保值问题 总被引：1，自引：0，他引：1
中国金融市场即将推出股票指数期货。本文吸收和借鉴了国外的研究成果,对股指期货的套期保值问题进行了系统研究,采用方差法和β系数法对风险最小化的套期保值比率进行了充分论证,并结合案例进行了模拟计算。本文根据资本资产定价模型,建立了一元线性回归方程,对流行的β系数法进行了检验和重要修正,对套期保值实践具有重要的指导意义。 相似文献
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我国法定存款准备金政策工具有效性分析 总被引：1，自引：0，他引：1
文章从三个层次对我国法定存款准备金政策工具的有效性做出实证分析:在促进最终目标实现的层面上,运用定性方法展开讨论,认为法定存款准备金率调整对稳定物价、抵御经济波动的作用有限;在影响中介目标的层面上,结合相关分析和定性分析方法,发现法定存款准备金率与信贷量呈正相关关系,法定存款准备金率的调整有助于稳定货币供应量的增长速度;在中介目标到最终目标的传导层面上,运用格兰杰因果分析,认为货币供应量对总产出和物价的影响不足。此外,文章探讨了紧缩性货币政策时期准备金政策工具低效的几个原因:超额准备金、外汇占款、通胀预期、银行外流动性。 相似文献
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Precious metals are popular instruments for hedging local currency risk. Most precious metals are priced in US dollars, which is a single-currency numéraire. The numéraire of a precious metal can easily be changed, which allows investors to choose their own local currency as the precious metal’s numéraire and subsequently use it to hedge their own local currency risk. In this paper, we decompose the standard hedge ratio into two parts, namely, a precious-metal hedge ratio and a local-currency hedge ratio. We consider three main precious metals, namely, gold, silver and platinum, from the beginning of 1990 to the end of 2019 to hedge local currency risk for individual G10 currencies. Over the full sample, we find that all standard hedge ratios are negative for all combinations of currencies and precious metals. However, the negativity is driven by the precious metal’s numéraire, rather than the precious metal. 相似文献
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通过对矿井案例下监测监控系统、井下人员定位系统的井下安全避险系统设计探讨,合理进行矿井下监测监控系统、井下人员定位系统设计,将突发事件的损失降到最小,大大提升了矿山安全管理水平。 相似文献
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In this paper, we consider estimation of a long-run and a short-run parameter jointly in the presence of nonlinearities. The theory developed establishes limit behavior of minimization estimators of the long- and short-run parameters jointly. Typically, if the long-run parameter that is present in a cointegrating relationship is estimated, its estimator will be superconsistent. Therefore, we may conjecture that the joint minimization estimation of both parameters jointly will result in the same limit distribution for the short-run parameter as if the long-run parameter was known. However, we show that unless a regularity condition holds, this intuition is false in general. This regularity condition, that clearly holds in the standard linear case, is identical to the condition for validity of a two-step Granger–Engle type procedure. Also, it is shown that if the cointegrated variables are measured in deviation from their averages, the standard asymptotic normality result (that one would obtain if the long-run parameter was known) holds. 相似文献
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本文针对商品期货市场在基差持续朝一个方向变动的情况下卖空保值风险大、成本高的重大现实问题，基于商品期货的持有成本理论，推导出具有普遍实用价值的考虑基差收敛性的动态最适保值比率模型。然后，综合应用时间序列分析和截面分析方法，在现货价格与到期期间恒定的利率调整基差间构建BV-GARCH模型，并利用BEKK形式的BV-GARCH模型，以上海期货交易所铜期货为实证对象，检验和比较了考虑与未考虑基差收敛性的最适保值比率模型的保值绩效，得出了有意义的具体结论。 相似文献
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This study examines portfolio management and risk spillovers between four major precious metals (gold, silver, palladium and platinum) and 20 important U.S. exchange markets. To this end, we employ the multivariate DECO-GARCH model and the spillover index developed by Diebold and Yilmaz (2014, 2016) to examine the spillovers between those metal prices and the exchange rates and design portfolios and hedging strategies using different risk measures. The results show evidence of weak average conditional equicorrelations among the considered markets over time, excluding the turbulent 2008–2010 period. Furthermore, the precious metals (excluding platinum) and the currencies (with the exception of the Australian, Brazilian, Denmark, Euro, Mexican, Norwegian, New Zealand and Swedish currencies) are net receivers of shocks. Finally, the four precious metals provide strong risk and downside risk reductions, underscoring the usefulness of including precious metals in a traditional foreign exchange-dominated portfolio. 相似文献
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我国物价水平的非线性调整分析 总被引：1，自引：0，他引：1
在前人对我国物价水平与货币量、产出间的协整关系研究的基础上,本文重新审视了线性调整模型中不变调整速度的假设,并利用非线性调整模型进一步研究了它们之间短期偏离向长期均衡调整的速度问题。否定了不变调整速度的假定,肯定了短期偏离的非线性调整性,并解释了我国货币政策对物价水平影响差异的原因。 相似文献
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This study investigates whether the role of gold changes due to the introduction of gold exchange-traded funds (ETFs) using sample data of seven countries in which physically-backed gold ETFs have been issued. The results show that the traditional roles of gold do change after the introduction of gold ETFs, particularly in the corresponding stock markets. The functions of hedge and safe haven provided by gold wear off during the post-ETF period in stock markets. In currency markets, however, gold still serves as a hedge and safe haven asset, and such effects become stronger during the post-ETF period. Moreover, gold ETFs play a role of relative strong safe haven than the physical gold does while the leading (lagged) stock returns extremely decline. Like the purposes of using physical gold assets, gold ETFs also provide hedge and safe haven effects to the exchange rate risks. Therefore, we might confirm that physical gold could be largely replaced by gold ETFs and investors could utilize gold ETFs to avoid potential risks in financial markets. 相似文献
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The paper proposes a framework for modelling cointegration in fractionally integrated processes, and considers methods for testing the existence of cointegrating relationships using the parametric bootstrap. In these procedures, ARFIMA models are fitted to the data, and the estimates used to simulate the null hypothesis of non-cointegration in a vector autoregressive modelling framework. The simulations are used to estimate p-values for alternative regression-based test statistics, including the F goodness-of-fit statistic, the Durbin–Watson statistic and estimates of the residual d. The bootstrap distributions are economical to compute, being conditioned on the actual sample values of all but the dependent variable in the regression. The procedures are easily adapted to test stronger null hypotheses, such as statistical independence. The tests are not in general asymptotically pivotal, but implemented by the bootstrap, are shown to be consistent against alternatives with both stationary and nonstationary cointegrating residuals. As an example, the tests are applied to the series for UK consumption and disposable income. The power properties of the tests are studied by simulations of artificial cointegrating relationships based on the sample data. The F test performs better in these experiments than the residual-based tests, although the Durbin–Watson in turn dominates the test based on the residual d. 相似文献
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Fan Yang;Tomas Havranek;Zuzana Irsova;Jiri Novak; 《Journal of economic surveys》2024,38(4):1085-1131
We examine whether estimates of hedge fund performance reported in prior empirical research are affected by publication bias. Using a sample of 1019 intercept terms from regressions of hedge fund returns on risk factors (the “alphas”) collected from 74 studies published between 2001 and 2021, we show that the selective publication of empirical results does not significantly contaminate inferences about hedge fund returns. Most of our monthly alpha estimates adjusted for the (small) bias fall within a relatively narrow range of 30–40 basis points, indicating positive abnormal returns of hedge funds: Hedge funds generate money for investors. Studies that explicitly control for potential biases in the underlying data (e.g., backfilling and survivorship biases) report lower but still positive alphas. Our results demonstrate that despite the prevalence of publication selection bias in many other research settings, publication may not be selective when there is no strong a priori theoretical prediction about the sign of the estimated coefficients. 相似文献