Internal Market Forces Drive Most Commodity Price Volatility

Researchers at the University of Nebraska-Lincoln have made an unexpected discovery about commodity markets. They found that external factors, such as droughts or wars, may account for only a small percentage of market volatility.

The study analyzed decades of price data from commodities like corn, soybeans, wheat, coffee, sugar, orange juice, hogs, and cattle. Using nonlinear analytical methods, the researchers identified patterns within price movements that traditional statistical techniques often miss.

Fabio Mattos, an associate professor at UNL's Department of Agricultural Economics, said that internal market dynamics may be responsible for 70% to 80% of commodity-price volatility. He explained that individual reactions from buyers and sellers can create significant price movement even when there is no major outside shock.

Mattos compared this phenomenon to traffic on the road: one driver's sudden braking can cause a chain reaction, resulting in a traffic jam, even if there was no accident or construction. He emphasized that external events like weather and wars are still important factors, but they may not be as influential as previously thought.

The researchers' findings could potentially improve short-term price forecasting and risk management, but Mattos cautioned that commodity prices remain unpredictable. The next phase of the study will focus on understanding how different market participants interact and contribute to price movements.