Concept of Efficient Market Hypothesis

Capital markets provide a function which facilitates the buying and selling of long-term financial securities to increase liquidity and their value, Watson & Head (2013). Hence, the Efficient Market Hypothesis (EMH) explains the relationship that exists with the prices of the capital market securities, where no individual can beat the market by regularly buying securities at a lower price than it should be. This means that in order to be an efficient market prices of securities will have to fairly and fully reflect all available information, Fama (1970). Consequently, Watson & Head (2013) believe that market efficiency refers to the speed and quality of how share price adjusts to new information. Nevertheless, the testing of the efficient markets has led to the recognition of three different forms of efficiency in which explains how information available is used within the market. In this essay, the EMH will be analysed; testing of EMH will show that the model does provide strong evidence to explain share behaviour but also anomalies will be discussed that refutes the EMH. Therefore, a judgment will be made to see which structure explains the efficient market and whether there are some implications with the EMH, as a whole.

So according to the Efficient Market Theory it is impossible for any investor to “beat the market” that is earn more profit or get more return than what the market is actually offering. Therefore the investor can only earn greater profits on his investment if the investment portfolio includes a high proportion of risky investments that is those with higher standard deviations and betas but with a good capability of yielding high returns as well (Stephens, C.R., 2010).

A firm’s intrinsic value refers to the true worth of stock in that firm which is calculated on return data and accurate risks. On the other hand, a firm’s current stock price talks about its market price as a whole as perceived by an

What is the efficient-markets hypothesis? What does it imply about the role of portfolio managers?

““The name of the game, moving money from your clients pocket to your pocket”, Mark stated. “But if you can make your clients money at the same time it’s advantageous to everyone, correct?” “No, Mark replied…Okay, first rule of Wall Street-nobody and I don’t care if you are Warren Buffet or Jimmy Buffet- knows if a stock is going up, down or sideways, least of all stock brokers. But we have to pretend we know.”” (8)

3. An analysis of stock market conditions including recent returns on stock market indexes and average valuation ratios such as P/E ratios of stock market indexes.

Another concern relates of insider trading of market efficiency of stock market. In his classical study Fama (1970) proposes efficient market Hypothesis, which suggests that stock price reflects all available information (historical price, public and private) in

An efficient market is one in which share prices quickly and fully reflect all available information, where investors are rational, and there are no frictions. Investors determine stock prices on the basis of expected cash flows to be received from a stock and the risk involved. Rational investors should use all the information they have available or can reasonably obtain, including both known information and beliefs about the future. In an efficient market there is “no free lunch”: no investment strategy can earn excess risk-adjusted average returns, or average returns greater than are warranted for its risk (Barberis, 2003). Market efficiency is assessed by determining how well

Efficient Market Hypothesis has been controversial issues among researcher for decades. Until now, there is no united conclusion whether capital markets are efficiency or not. In 1960s, Fama (1970) believed that market is very efficient despite there are some trivial contradicted tests. Until recently, both empirical and theatrical efficient market hypothesis was being disputed by behavior finance economist. They have found that investor have psychological biases and found evidences that some stocks outperform other stocks. Moreover, there are evidences prove that market are not efficient for instance financial crisis, stock market bubble, and some investor can earn abnormal return which happening regularly in stock markets all over the world. Therefore, the purpose of this essay is to demonstrate that Efficient Market Hypothesis in stock (capital) markets does not exist in the real world by proofing four outstanding unrealistic conditions that make market efficient: information is widely available and cost-free, investor are rational, independent and unbiased, There is no liquidity problem in stock market, and finally stock prices has no pattern.

It istaking the company’s stock price and comparing it to its earnings, cash flow, or book value (Nishi &Doering, 2000).

Last but not least important, an efficient capital market is one in which stock prices fully reflect all available information. However, the paradox is that since information is reflected in security prices quickly, knowing information when it is released does an investor little good. Furthermore, it is impossible to create a portfolio which would earn extraordinary risk adjusted return. As a consequence, all the technical and fundamental analysis are useless, no one can consistently outperform the market, and new

Even though there are flaws in the CAPM for empirical study, the approach of the linearity of expected return and risk is readily relevant. As Fama & French (2004:20) stated “… Markowitz’s portfolio model … is nevertheless a theoretical tour de force.” It could be seen that the study of this paper may possibly justify Fama & French’s study that stated the CAPM is insufficient in interpreting the expected return with respect to risk. This is due to the failure of considering the other market factors that would affect the stock price.

In an efficient market at any point in time the actual price of a security will be a good estimate of its intrinsic value. An efficient-market is defined as a market where there are large numbers of rational, profit-maximizers actively competing, with each trying to predict future market values of individual securities, and where

Stock market efficiency has been the subject matter of research studies for periods well over the past three decades. Several theories have been established about basically how the competition will drive all information into the prices of securities quickly. Centering this idea the concept known as Efficient Market Hypothesis has been evolved which also has been the subject of intense debate among academics and financial professionals. Efficient Market Hypothesis states that at any given time security prices fully reflect all available information. It is stated that if the markets are efficient and current prices fully reflect all information then buying

If a capital market fully and accurately reflects all relevant information when determining the price of the securities, the market is effective and the three characteristics of the effective capital market are efficient operation, efficient price, and efficient distribution(Sascha Kurth,2013). There are three forms of efficiency market, this article will analyze the characteristics of semi-strong effective market and the impact of the abnormal Book-Market-value effect on the effective market hypothesis so that investors should be dialectical view of the market hypothesis and the emergence of abnormal to make the stable investment activities.