基于條件風(fēng)險值(CVaR)模型的評級公司基金評級質(zhì)量的研究
[Abstract]:As the number of funds increases and the size of the funds grows, investors increasingly rely on the ratings of third-party rating agencies. Fund rating is an important pillar of credit rating. Fund rating is an objective and fair evaluation of fund performance and expresses the results to the society in the form of simple and clear symbols. For investors, ratings provide information about the fund. For issuers, a comprehensive reflection of the Fund's performance and status. But many studies and actual results show that the fund rating does not necessarily reflect the real performance of the fund, and is not necessarily consistent with subsequent performance. This paper attempts to test the rating quality of the fund by using the conditional risk value (CVaR) of the investment portfolio, and to measure the fund by the risk index. Based on the single-objective conditional risk value (CVaR) model and the multi-objective conditional risk value (CVaR) model, the evaluation model of fund rating quality is established. The relative accurate value, relative total error and relative comprehensive index are defined. Then 80 open-end funds are selected to investigate the rating quality of rating companies. The conditional risk value of the selected fund is calculated by mathematical software, and ranked according to its size and evaluated with five stars. Finally, the empirical analysis of the rating results of the four rating companies is carried out. The performance of the model based on conditional risk value (CVaR) model is verified by the average rate of return of the fund in the next two months. It is hoped that the analysis results can be used as a reference for investors when referring to the rating results of rating companies.
【學(xué)位授予單位】:浙江工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:F832.5;F224
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