Markowitz-Based Portfolio Research

Abstract

Stock investment, as an investment behavior, faces various situations of unknown uncertainty, therefore, it is very important to reduce the unsystematic risk of stocks and eliminate uncertainty by various means and technical methods for investing in stocks. In this paper, we will use python and the data of listed companies in CSMAR database to construct the Markowitz portfolio model to study the risk and return problem in stock portfolio based on Markowitz portfolio theory. The paper also uses the empirical analysis in A-share market to show that Markowitz portfolio theory can effectively reduce the risk while obtaining the return.