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首页> 外文期刊>The North American journal of economics and finance >Holidays, weekends and range-based volatility
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Holidays, weekends and range-based volatility

机译:假期,周末和基于范围的波动

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This study analyses the effect of non-trading periods on the forecasting ability of S&P500 index range-based volatility models. We find that volatility significantly diminishes on the first trading day after holidays and weekends, but not after long weekends. Our findings indicate that models that include autoregressive terms that interact with dummies that allow us to capture changes in volatility levels after interrupting periods provide greater explanatory power than simple autoregressive models. Therefore, the shorter the length of the non-trading periods between two trading days, the higher the overestimation of the volatility if this effect is not considered in volatility forecasting.
机译:本研究分析了非交易期对基于S&P500指数范围的波动模型预测能力的影响。我们发现波动性在假期和周末之后的第一个交易日明显减少,但不会在长周末之后。我们的调查结果表明,包括与允许我们在中断期间捕获波动率水平变化的假人的型号,这些术语提供比简单的自回归模型更大的解释性权力。因此,在两个交易日之间的非交易期间的长度越短,如果在波动性预测中不考虑这种效果,波动的高度升高越高。

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