英文文献:What Explains High Commodity Price Volatility? Estimating a Unified Model of Common and Commodity-Specific, High- and Low-Frequency Factors-如何解释大宗商品价格的高波动性?估计一个统一的模型的共同和商品的具体,高频和低频因素
英文文献作者:Karali, Berna,Power, Gabriel J.
英文文献摘要:
We estimate a model of common and commodity-specific, high- and low-frequency factors, built on the spline-GARCH model of Engle and Rangel (2008) to explain the period of exceptionally high price volatility in commodity markets during 2006-2008. We find that decomposing realized volatility into high- and low-frequency components reveals the impact of slowly-evolving macroeconomic variables on the price volatility. Further, we find that while macroeconomic variables have similar effects within the same commodity category (e.g., storable agricultural), they have different effects across commodity groups (e.g., live stock versus energy).
在Engle和Rangel(2008)的spline-GARCH模型的基础上,我们估计了一个包含常见和特定商品、高频和低频因素的模型,以解释2006-2008年期间商品市场价格异常高波动的时期。我们发现,将已实现波动分解为高频和低频分量,揭示了缓慢演化的宏观经济变量对价格波动的影响。此外,我们发现,尽管宏观经济变量在相同的商品类别(例如,可储存农业)中具有相似的影响,但它们在不同的商品类别中具有不同的影响(例如,活畜与能源)。


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