Bivariate garch estimation of the optimal commodity futures Hedge
商品期货最优套期保值比率的双变量 GARCH 估计AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要使用双变量 GARCH 估计现货与期货的条件方差及协方差,以此计算套保比率,直接属于金融波动率建模。
商品期货最优套期保值比率的双变量 GARCH 估计AI 解读 ↓
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Abstract Six different commodities are examined using daily data over two futures contract periods. Cash and futures prices for all six commodities are found to be well described as martingales with near‐integrated GARCH innovations. Bivariate GARCH models of cash and futures prices are estimated for the same six commodities. The optimal hedge ratio (OHR) is then calculated as a ratio of the conditional covariance between cash and futures to the conditional variance of futures. The estimated OHRs reveal that the standard assumption of a time‐invariant OHR is inappropriate. For each commodity the estimated OHR path appears non‐stationary, which has important implications for hedging strategies.