We explore the impact of the 2013 Common Agricultural Policy (CAP) reform on spatial price co-movements between the main European Union (EU) wine producer markets (i.e., Spain, France, and Italy). We consider monthly prices from January 2005 to January 2020 and R-Vine copula models, splitting the time period considered in December 2012 to track the changes in (1) the degree of integration, (2) the central markets, and (3) the potential asymmetries after the 2013 CAP reform. The results indicate an increasing overall price dependence from one sub-period to another, with Spain succeeding Italy as the central EU market. We also show asymmetry between Italy and France in the upper tail before 2013 and between Spain and France in the lower tail after 2013.

The analysis examines quantitatively the findings of previous studies of the pricing efficiency of various agricultural markets using a logit framework. The findings provide insight into the importance of commodity characteristics, uncertainty, and testing procedures used on the results of past research of pricing efficiency. The study also identifies several areas for further research.

This paper examines two interrelated issues in commodity markets, namely,the cyclical relationship between stocks and commodities and the function ofcommodity and agribusiness indexes in portfolios. A high negativecorrelation has existed between stock and commodity prices over the past 140years. Moreover, the two markets have alternated in price leadership with29-32-year cycles. The recent price dominance in agricultural commoditiesstarted in 2000, a result supported by the empirical results of theportfolio allocation analysis. For a risk-averse investor, irrespective ofthe period analyzed, placing funds in agribusiness and/or agriculturalcommodity indexes was sound investing.