Corporate Securities Of Investment Research

Security investment is an old and new thing, was researched deeply in west countries. With the build of the Markowitz's theory and CAPM model funded by Sharp and Lintner, the research of security investment run into a new period. However it was effected by the planned economic in our country, it was less researched in our country. Correlative research was also demonstrated based itself upon in our stock market. Because the abnormity in our stock market and the conditions of theory itself don't exist, much less theories adapted to our stock market. This paper discussed the actuality of our stock market, risk and measures from the problems of inside and outside of the research in nation particularly. It comments and analysis several famous and popular investment theories, at the same time, it points their shortage. It discussed every investment implement particularly, on this base analyses the security investment, recited every investment method and erected right investment ideas. The thesis demonstrated the applicability of CAPM in our stock market. At last, it discussed the conception of the risk, the measurement of the risk. Due to the portfolio theory funded on the Markowitz theory didn't take into account the cost of trade, so this paper inducted trade cost function and demonstrated it's right . This is an innovation of my paper. At the same time ,it discussed how to risk-aversion.