To explain price volatility in the U.S. agricultural, energy, and metal futures markets, we estimate a model of common and commodity-specific, high- and low-frequency factors by building on the spline-GARCH model of Engle and Rangel (2008). A better model fit results from allowing the...

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...