上證指數(shù)周內(nèi)效應(yīng)研究——基于AR-GARCH-GED模型和滑動(dòng)窗口回歸
[Abstract]:By introducing the autoregressive term, this paper improves the GARCH-GED model used in previous domestic research institutes, and establishes the AR-GARCH-GED model. Using the daily data of Shanghai stock index from December 19, 1990 to July 15, 2015, the intraweek effect is studied. The results show that the index of Shanghai stock market is more significant in the week effect than the previous study. In order to further investigate whether the significant intraweek effect is merely a purely opportunistic behavior of data mining, the sliding window regression of the model shows that the proportion of the significant effect in the week is only between 13% and 25%. Based on the results of this study, it is possible that the intraweek effect in previous studies in China is a statistical illusion, and the intraweek effect of Shanghai stock index depends on data mining.
【作者單位】: 重慶大學(xué)經(jīng)濟(jì)與工商管理學(xué)院;西南財(cái)經(jīng)大學(xué)會(huì)計(jì)學(xué)院;
【基金】:國(guó)家社會(huì)科學(xué)基金重大項(xiàng)目“開放經(jīng)濟(jì)條件下我國(guó)虛擬經(jīng)濟(jì)運(yùn)行安全法律保障研究”(項(xiàng)目編號(hào):14ZDB148)
【分類號(hào)】:F224;F832.51
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