Research On The Relationship Between The Evolution Of Network Public Opinion Events And Stock Price Of Listed Companies

With the development of information technology and the popularity of the network,all kinds of network public opinion event appears.Especially some of the public events on the stock market of listed companies,which make it easier to attract investors' attention.In many public opinion events,people's livelihood is the most attractive thing that has raised people's concern.Among of them,the housing problem as the livelihood of the problem is particularly a prominent part,whether it is the real estate market or the real estate stock market,all attract people's extensive attention.But,does the network of hot public opinion event is really able to affect the related company's share price changes?What kind of change will cause?What are the influencing factors?These are all worth thinking about.This article based on the above issues,use Sina microblogging as a starting point for research,and use the resume trading events of Vanke as examples.And crawl data from micro-blog Sina's real estate sector about a series of public opinion events of Vanke Company.Then carry out the correlation analysis and modeling between the evolution of public opinion and the stock price of listed companies.And according to the emotional value test assignment,study the relationship between investor sentiment and stock price.And then analyze whether the listed companies public opinion events can affect the company's share price changes and conclude its' influencing factors.In order to provide appropriate measures for the listed companies how to face the network public opinion events.The experiments show that:when the micro-blog network public opinion show the positive public opinion of the listed companies,micro-blog get the network public opinion attention is the highest,as time goes by,the number of reviews reduced gradually,and the attention is also reduced gradually;if micro-blog network public opinion is negative public opinion,comments and attention will evolve with the public opinion of the growing time until the stock price rise;There is a positive correlation between investor sentiment and stock price,especially in the decline process of the stock price;the correlation is stronger than the stock price when the stock price is stable or rising.The trading volume,share price increase,the number of micro-blog,emotion value are all pass the stationarity test,and the investor sentiment can explain the volatility of stock price in a certain extent,investor sentiment is the Granger reason of the stock price fluctuation.