The Efficient Market Hypothesis ( Emh ) Promoted By Fama ( 1970 )

The weekly performance of IBM stock presented a contestant growth. One highlight of the falling of stock price in the 6th week in the investment period was when IBM presented the 3rd quarter financial report. The investors weren’t satisfied with the profit report which they expected to be better especially when other IT companies were doing well in the 3rd quarter. One mistake I made was that I didn’t follow closely to the financial report of the company; therefore, I missed the peak of the stock price. From this experience, I learned that financial reports and current news are important indicators of the stock price. By following closely to the current event and analyzing the financial report, investors can maximize the profit and also become more familiar to the market.

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.

It is believed that Efficient Market Theory is based upon some fallacies and it does not provide strong grounds of whatever that it proposes. More importantly the Efficient Market theory is perceived to be too subjective in its definition and details and because of this it is close to impossible to accommodate this theory into a meaningful and explicit financial model that can actually assist investors in making the investment decisions (Andresso-O’Callaghan, B., 2007).

As Chapter 10 questions, if further evidence continues to surface that capital markets do not always behave in accordance with the efficient market hypothesis, then should we reject the research that has embraced the EMH as a fundamental assumption? In this regard we can return to earlier chapters of this book in which we emphasised that theories are abstractions of reality. Capital markets are made of individuals and as such it would not (or perhaps, should not) be surprising to find that the

The authors jointly examine momentum and value in eight different markets and asset classes. Asness, Moskowitz and Pederson found two main phenomena associated with returns across 8 various markets and asset classes in their research. These findings challenge previous, well-established theories, like the existence of significant premia in value and momentum return strategies across asset classes and global markets. This innovative research includes some new asset classes not previously used, such as government bonds, currencies, and commodities. The authors look to prove the

In February 1995, Adam Bain, investment advisor in the London, Ontario branch of RBC Dominion Securities Inc. (RBC DS), was considering whether or not to implement a price momentum strategy for his clients. Trend and Cycle, DS’s technical research department, had recently circulated a copy of a study which described a simple price momentum model and referred to its “startling results” based on back testing the strategy over a 15 year period. The Trend and Cycle group had long promoted the importance of price momentum and relative strength to potential clients. Bain needs to determine whether the proposed model was “too good to be true” or, if it did not look promising, how he would go about

The five events are correlated and occurring over approximate five months from 18th August 2010 to 13th December 2010.

The Efficient-Market Hypothesis (EMH) states that it is impossible to beat the market because stock market efficiency causes existing share prices to always incorporate and reflect all relevant information.

It was previously assumed that economic investors and regulators (agents) utilised all available information and thus market prices were a reflection of this information with assets representing their fundamental value, encouraging the position that agents’ actions were rational. The 2007-2008 Global Financial Crisis (GFC) is posited to have originated from the notion that all available information was utilised, causing agents to fail to thoroughly investigate and confirm “the true values of publicly traded securities,” leading to a failure to register the presence of an asset price bubble preceding the GFC (Ball 2009).

To justify whether it works, we first ran a regression on the Three-Factor Fama French Model (Market Excess Return, SMB and HML) from Jan 1972 to Dec 2012 respectively for the High-, 5-, Low-, and High-Minus-Low Portfolio. Then, we added momentum into the model to create a four-factor model (Momentum, Market Excess Return, SMB and HML) for the same period on a monthly basis. (See Exhibit 2).

In order to analyze the momentum effect of different specifications, stocks were divided into ‘winner’ stocks and ‘loser’ stocks according to their rankings.

As a PhD candidate in Finance, I want to continue my research on earnings revision and earnings surprises as well as investigate other factors of return predictability related to size, profitability, and momentum. In addition, my other research interests are in (1) investments, (2) hedge funds and mutual funds, and (3) applications of machine learning in finance.

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.

The efficient market, as one of the pillars of neoclassical finance, asserts that financial markets are efficient on information. The efficient market hypothesis suggests that there is no trading system based on currently available information that could be expected to generate excess risk-adjusted returns consistently as this information is already reflected in current prices. However, EMH has been the most controversial subject of research in the fields of financial economics during the last 40 years. “Behavioural finance, however, is now seriously challenging this premise by arguing that people are clearly not rational” (Ross, (2002)). Behavioral finance uses facts from psychology and other human sciences in order to

One of the best general models for trading stocks that will produce significant long term profits (if applied to the correct stocks) is a trend following strategy. Trend following strategies essentially buy a stock when it breaks out to a new high price of some level, and then exits the position at a low price. This actually sounds like "buy high and sell low" but the goal is actually to buy high and sell higher. This is counter to what most