L’influence de l’activité financière sur la volatilité des prix des denrées alimentaires

The intensification of the relationship between financial and agricultural markets seems to be an important determinant of agricultural commodity prices. In order to study this potential phenomenon, a DCC-GARCH model linked with a causality test in variance is used. The results of this article show a causal relationship between the volatility of agricultural products and the financial markets, suggesting a potential implication of the financial markets in the recent rises in agricultural product prices.