基于高頻數(shù)據(jù)的中國股市跳躍特征實(shí)證分析
[Abstract]:It is very important to study the internal mechanism of jumping and to identify different types of risks for volatility estimation and modeling, which is the core content of risk management. At present, the use of high-frequency data in this area is still immature, there are plenty of content to explore. Based on the nonparametric method and A-J jump test statistics, a new jump variance and continuous sample path variance are constructed, and the jump variance is modeled. Based on the high frequency data of Shanghai Composite Index, this paper analyzes the statistical characteristics of jump variance, the contribution of jump variance, jump amplitude and the relationship between jump and economic information. The results show that the jump variance has peak thick tail and fluctuation agglomeration, the contribution of jump variance to total variance is similar at different sampling frequencies, the positive and negative jump amplitude is asymmetric, The standardized rate of return after stripping and jumping is close to the normal distribution, and the announcement of economic information is always positively related to the jump, and some abnormal phenomena are explained. Depending on the complexity of volatility and jumping, the study helps investors optimize investment strategies and provide regulatory bases for regulators.
【作者單位】: 福州大學(xué)管理學(xué)院;
【基金】:國家自然科學(xué)基金資助項(xiàng)目(71171056,70973021) 福建省社科規(guī)劃項(xiàng)目(2011B135)
【分類號】:F224;F832.51
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