PRICE AND PRICE RISK DYNAMICS IN BARGE AND OCEAN FREIGHT MARKETS AND THE EFFECTS ON COMMODITY TRADING
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The effects of volatility of barge and ocean freight prices on prices throughout the international grain-marketing channel are analyzed using a Multivariate GARCH-M model. The model is used to infer the extent to which transportation price risk affects the level of international grain prices. Results indicate that both barge and ocean price volatility influence grain prices, but barge price volatility tends to have a greater impact on grain prices than that arising from ocean price volatility. The lack of a futures contract for barge rates may be partially responsible for its significant influence on grain price levels.