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Study on analyst optimism and individual stock price crash

机译:分析师乐观与个人股价暴跌研究

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This paper studies the relation between analyst optimism and individual stock price crash, and whether the conflict of interest affects the relation. Examining a comprehensive sample of listed companies between 2007 and 2012 in Shanghai and Shenzhen A-share stock market in China, we provide strong evidence that analyst optimism is positively associated with stock price crash. Furthermore, we test the conflict of interest, results show that: when the company is going to refinance, or if the ratio of analysts from top 10 brokerage firms is high, the impact of analyst optimism on individual stock price crash is more pronounced. On the contrary, analyst reputation reduces the impact of analyst optimism on crash. This research provides a reasonable explanation of stock price crashes, and contributes to a comprehensive and objective understanding of analysts in the capital market in China.
机译:本文研究了分析师的乐观情绪与个人股价暴跌之间的关系,以及利益冲突是否会影响这种关系。通过对2007年至2012年间中国上海和深圳A股市场上市公司的全面抽样调查,我们提供了有力的证据,表明分析师的乐观情绪与股价暴跌有正相关关系。此外,我们测试了利益冲突,结果表明:当公司要进行再融资时,或者前十大经纪公司中的分析师比例很高时,分析师乐观情绪对个别股票价格崩盘的影响更为明显。相反,分析师的声誉降低了分析师的乐观情绪对崩溃的影响。这项研究为股价暴跌提供了合理的解释,并有助于对中国资本市场的分析师进行全面客观的了解。

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