Delle Chiaie, Simona; Ferrara, Laurent; Giannone, Domenico - 2017
-fuel commodities. We decompose each commodity price series into a global (or common) component, block-specific components and a purely … idiosyncratic shock. We find that the bulk of the fluctuations in commodity prices is well summarised by a single global factor … commodity price variations has increased since the 2000s, especially for oil prices. …