The rapid development of the economy emphasizes the importance of financial\nrisk. Financial risk analysis can help people understand finance more\ndeeply and reduce the loss of profits. This paper is about the dependence on\nstocks, which is very important for analyzing the dependence structure of\nstock market and the portfolio risk of investment market. The experimental\ndata are the daily closing price data of shares of Midea Group and Gree Electric.\nCopula theory is used to fit the daily return data of Gree Electric and\nMidea Group. By establishing the correlation structure model of the stock\nmarket, the daily return data of Gree Electric and Midea Group are better simulated.
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