| In the first quarter of 2015,new stock account up 433% from a year earlier,reaching more than 7.95 million households.Among them,people over 55 also have a certain proportion,for 5.2%,and 80 s become the main force,accounting for 62%..In August 2016,new accounts achieved more than 2 million people.Investors are active in the stock market,creating a "universal boom" phenomenon.But In the real stock market,the market environment is Complex,In order to reduce the risk in the market effectively,and ensure the stability of the stock portfolio expected return,usually choose stocks to be combined,and using some methods to build a stock portfolio.However most of traditional measures of stock portfolio do not conform to the actual situation,such as many scholars have found that the vast majority of financial data in the empirical does not meet the normal variable hypothesis,and if using multidimensional normal distribution as a joint distribution will lead to serious consequences.As National large-scale comprehensive securities company,Nan Jing X Security Company need to improve the company's stock portfolio method,to cope with the new situation.This paper taking the core customers of brokerage services of Nan Jing X Security Company as the research object,by investigating the current situation of company's core customer equity investments,and getting the corresponding pool and the stock combination methods in-depth analysis and evaluation,And to provide a portfolio of the problems existing in the method,and use Sharpe ratio to analyze and compare,then combined with relevant theory of stock portfolio method optimization solutions and suggestions are put forward.By the method of optimization of stock portfolio,raising the scientific nature of the stock portfolio,in order to build a stock portfolio to provide beneficial reference for the company,making the company improve customer service,to serve the company's core customers better and improve competitiveness. |
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