中國證券市場投資者情緒與羊群效應的關聯(lián)性研究
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本文關鍵詞:中國證券市場投資者情緒與羊群效應的關聯(lián)性研究 出處:《南京財經(jīng)大學》2012年碩士論文 論文類型:學位論文
更多相關文章: 行為金融 投資者情緒 羊群效應 協(xié)整檢驗 脈沖響應
【摘要】:現(xiàn)代金融理論認為投資者是理性的,在理性人的假設條件下市場是有效的。個體投資者的行為對市場不會產(chǎn)生影響,因為即使有非理性的投資者存在,也會被套利者趕出市場。但行為金融理論放寬了理性人的假設,認為投資者是非理性的或者是有限理性的,運用心理學和行為學對投資者的行為作出了解釋。在非理性或有限理性條件下,投資者情緒會影響投資者行為,而投資者行為會對資產(chǎn)定價產(chǎn)生影響,進而影響整個金融市場。本文在此理論框架下,研究了中國證券市場投資者情緒與羊群效應的相互關系。 全文的研究結論可以歸納為以下三個方面: (1)當前對投資者情緒的定義還很模糊,現(xiàn)有學者從不同角度提出了考察投資者情緒的指標,本文認為單一指標在考察投資者情緒問題上相對片面,在此基礎上本文參考了現(xiàn)有學者對投資者情緒的研究,選取相關的指標作為投資者情緒的代理變量,運用主成分分析法構建投資者情緒指數(shù),研究表明所構建的投資者情緒指數(shù)很好的反映了證券市場投資者的情緒,綜合指數(shù)要優(yōu)于單一指標。 (2)關于羊群效應的研究,現(xiàn)有學者從理論到實證都對其進行了不同程度的研究。本文綜合已有的研究成果,對中國證券市場的羊群效應進行了實證分析,,研究結果表明:中國證券市場存在顯著的羊群行為,在此基礎上,運用“滑動窗”技術對中國證券市場上的羊群效應進行了動態(tài)分析,發(fā)現(xiàn)我國證券市場羊群效應普遍存在,且在不同時期,羊群效應的程度有所差別。 (3)當前對于證券市場投資者情緒與羊群效應的關聯(lián)性研究還很少。鑒于此,本文考察了中國證券市場投資者情緒與羊群效應的關系。研究結果表明:中國證券市場投資者情緒與羊群效應存在長期的均衡關系。投資者情緒的高漲和低落都會導致證券市場羊群效應程度加深。進一步研究發(fā)現(xiàn),投資者情緒可能是導致羊群效應的一個因素,而證券市場羊群效應的大小也會影響投資者情緒的變化,兩者相互之間具有一定的解釋作用。
[Abstract]:Modern financial theory holds that investors are rational and the market is effective under the assumption of rational people. The behavior of individual investors will not affect the market because even if there are irrational investors. But behavioral finance theory has relaxed the hypothesis of rational people that investors are irrational or limited rational. Using psychology and behavior to explain the behavior of investors. Under irrational or limited rational conditions, investor sentiment will affect investor behavior, and investor behavior will have an impact on asset pricing. In this theoretical framework, the relationship between investor sentiment and herding effect in China's securities market is studied. The conclusions of this paper can be summarized into the following three aspects: At present, the definition of investor sentiment is still very vague. The existing scholars put forward the index of investor sentiment from different angles. This paper thinks that the single index is relatively one-sided in examining investor sentiment. On this basis, this paper refers to the existing scholars' research on investor sentiment, selects relevant indicators as proxy variables of investor sentiment, and constructs investor sentiment index by principal component analysis. The research shows that the constructed investor sentiment index well reflects the investors' sentiment in the securities market, and the composite index is better than the single index. 2) on the research of herding effect, the existing scholars have studied it in different degrees from theory to demonstration. This paper makes an empirical analysis of herding effect in Chinese stock market by synthesizing the existing research results. The results show that there is remarkable herding behavior in China's securities market. On the basis of this, the "sliding window" technique is used to analyze the herding effect in China's securities market. It is found that herding effect exists generally in China's securities market, and the degree of herding effect varies in different periods. 3) there are few studies on the relationship between investor sentiment and herding in the securities market. This paper examines the relationship between investor sentiment and herding effect in China's securities market. The results show that:. There is a long-term equilibrium relationship between investor sentiment and herding effect in China's securities market. The upsurge and depression of investor sentiment will lead to the deepening of herding effect in the securities market. Investor sentiment may be one of the factors leading to herding effect, and the size of herding effect in securities market will also influence the change of investor sentiment.
【學位授予單位】:南京財經(jīng)大學
【學位級別】:碩士
【學位授予年份】:2012
【分類號】:F832.51;F224
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