Stability in supply of commodities is essential for manufacturing and doing business. This fact is unchangeable despite the passage of time and only the ways of trading of commodities differ. Especially in recent decades, the global economy has changed significantly and one of the major factors...

We uncover a large and significant low-minus-high rank effect for commodities across two centuries. There is nothing anomalous about this anomaly, nor is it clear how it can be arbitraged away. Using nonparametric econometric methods, we demonstrate that such a rank effect is a necessary...