Study Of Risk Of The Real Estate Industry In The Basis Of The Investment Portfolio Theory

The papers is in order to study the investment risk of the real estate industry in the support of the investment portfolio theory.The investment Portfolio theory created by Markwitz professor ,discussing on the relationship between risk and return of the whole which consisted by a number of assets. and how do reasonable investors choose their own best investment portfolio and so on. 1952, Harry Markowitz released an article named "asset choices : effective decentralization of investment, "on" the financial magazine", and gave an a text of its publication of the same name in 1959,it dedicated to the creation of modern investment theory and laid the foundation for its further development. William F. Sharpe in 1964, John Lintele in 1965 and John Mossin in 1966 separately raised the famous capital asset pricing model (CAPM). Stephen Ross raised the arbitrage pricing theory (APT) in 1976. The three theories are the main content of modern portfolio theory.This paper fristly analyzes the current state of real estate investment, and analyzes the real estate investment risks, secondly, classifying risk as systematic risk and non-systematic risk in the basis of the investment portfolio theory ,and doing analysis and avoidance for them, then describing the basis of the investment portfolio theory, comparing risk measurement methods, analyzing the risk of example,establishing certain return-minimum risk model in the basis of variance-risk measurement method, and getting theβby spss ,and then explaining the model by actual example,Finally, aggregating the whole papers.