In the context of vigorously developing China's securities market institutional investors in the period of economic transition, this paper does the empirical research on the herd behavior from the view of the interac...In the context of vigorously developing China's securities market institutional investors in the period of economic transition, this paper does the empirical research on the herd behavior from the view of the interaction between individual and institutional investors. This paper adopts the standard deviation of trading volume the cross-section to measure herd behavior. The results show that no matter what the market is in bull status and bear status, institutional investors perform herd behavior and with the expansion of the shareholding scale in a bull market, the herd behavior is higher, which suggests that the vigorous development of institutional investors has not eliminated herd behavior. This paper further confirms that there is the endogenous volatility in the market based on an artificial stock market. Finally it is demonstrated the herd behavior of institutional investors cause abnormal fluctuations in the market.展开更多
With the rapid development of Internet media,Internet media coverage has more or less influence on investors'psychological level.This article uses Python technology to climb 2019.9 to 2020.1 of the monthly news re...With the rapid development of Internet media,Internet media coverage has more or less influence on investors'psychological level.This article uses Python technology to climb 2019.9 to 2020.1 of the monthly news reports on A share listed companies in the Snowball net,and studies the relationship between media attention and investors'heterogeneous beliefs.It is found that media attention is positively correlated with investors'heterogeneous beliefs,that is,investors are more likely to choose stocks frequently reported by media.Further research finds that media reports will strengthen investors'heterogeneous beliefs,affect investors'investment behavior,and ultimately lead to the increase of stock trading volume.展开更多
基金supported by the National Nature Science Foundation under Grant No.71201124
文摘In the context of vigorously developing China's securities market institutional investors in the period of economic transition, this paper does the empirical research on the herd behavior from the view of the interaction between individual and institutional investors. This paper adopts the standard deviation of trading volume the cross-section to measure herd behavior. The results show that no matter what the market is in bull status and bear status, institutional investors perform herd behavior and with the expansion of the shareholding scale in a bull market, the herd behavior is higher, which suggests that the vigorous development of institutional investors has not eliminated herd behavior. This paper further confirms that there is the endogenous volatility in the market based on an artificial stock market. Finally it is demonstrated the herd behavior of institutional investors cause abnormal fluctuations in the market.
文摘With the rapid development of Internet media,Internet media coverage has more or less influence on investors'psychological level.This article uses Python technology to climb 2019.9 to 2020.1 of the monthly news reports on A share listed companies in the Snowball net,and studies the relationship between media attention and investors'heterogeneous beliefs.It is found that media attention is positively correlated with investors'heterogeneous beliefs,that is,investors are more likely to choose stocks frequently reported by media.Further research finds that media reports will strengthen investors'heterogeneous beliefs,affect investors'investment behavior,and ultimately lead to the increase of stock trading volume.