
AbstractWe show how fat tails in agricultural commodity returns arise endogenously from productivity shocks in a standard macroeconomic model. Using nearly ninety years of data, we show that the eight agricultural commodities in our sample exhibit fat-tailed return distributions. Statistical tests confirm the heavy-tailedness of price spikes for agricultural commodities. We apply extreme value theory to estimate the size and likelihood of price spikes in agricultural commodities. Back-testing verifies the validity of our risk assessment methodology.
Applications of statistics to actuarial sciences and financial mathematics, commodity prices, 60G70, extreme value theory, Statistics of extreme values; tail inference, Extreme value theory, SDG 8 - Decent Work and Economic Growth, Agricultural commodities; extreme value theory; heavy tails; risk management, risk management, Commodity prices, heavy tails, Extreme value theory; extremal stochastic processes, Time series, auto-correlation, regression, etc. in statistics (GARCH), Risk management, Heavy tails, 62G32, jel: jel:C14, jel: jel:Q11, jel: jel:Q14
Applications of statistics to actuarial sciences and financial mathematics, commodity prices, 60G70, extreme value theory, Statistics of extreme values; tail inference, Extreme value theory, SDG 8 - Decent Work and Economic Growth, Agricultural commodities; extreme value theory; heavy tails; risk management, risk management, Commodity prices, heavy tails, Extreme value theory; extremal stochastic processes, Time series, auto-correlation, regression, etc. in statistics (GARCH), Risk management, Heavy tails, 62G32, jel: jel:C14, jel: jel:Q11, jel: jel:Q14
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