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shares of futures speculators have destabilized commodity spot prices. We approximate conditional volatility and regress it …-periods, and document whether the speculative impact on conditional volatility has increased. However, with respect to six heavily …
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and cattle with ARIMA models and in some articles including volatility models. Unlike such articles, herein the models of … the spot price of coffee and cattle are estimated evaluating the ARIMA model and the volatility model (GARCH, GJR and …
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We consider a market model that consists of financial investors and producers of a commodity. Producers optionally store some production for future sale and go short on forward contracts to hedge the uncertainty of the future commodity price. Financial investors take positions in these contracts...
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