efficient market hypothesis (emh) การใช้

Among classics financial theory , efficient market hypothesis ( emh ) is the core of the quantity capital market theory all the time , and it is one of the theoretical foundation of modern financial economics at the same time
In this thesis , the efficiency of stock market is defined as two aspects : information efficiency and function efficiency . efficient market hypothesis ( emh ) has studied the relationship between stock price and information in stock market
Although the efficient market hypothesis ( emh ) is the core theory of the pricing efficiency of capital market , emh is " the revolution of rational expectation " in some meaning according to author ' s view
Fama and french wrote an article for the journal of finance in the year of 1992 . they thought that p is unrelated to stock return . this view is strongly against the key thought of capm and directly against the efficient market hypothesis ( emh )
At present , the researches about pricing efficiency are all based on efficient market hypothesis ( emh ) both at home and abroad . but many researchers do not truly understand emh , and many concepts have not been clarified , even the existence and tenable conditions of emh have not been fully understood