Can Noise Traders Survive Essay

Hint : Investors purchase assets based on a rational expectation of a stream of future income.

Chapter seven: What does the efficient market theory have to do with Financial markets? Discuss the positives and negatives of the theory. Why do Wall-Street types not like it? Explain the coin flipping experiment, as it relates to investment diversification.

According to the EMH, stocks always trade at their fair value on stock exchanges, making it impossible for investors to either purchase undervalued stocks or sell stocks for inflated prices. Thus, portfolio managers should find it impossible to outperform the overall

It is often said that perception outweighs reality and that is often the view of the stock market. News that a certain stock may be on the rise can set off a buying spree, while a tip that one may be on decline might entice people to sell. The fact that no one really knows what is going to happen one way or the other is inconsequential. John Kenneth Galbraith uses the concept of speculation as a major theme in his book The Great Crash 1929. Galbraith’s portrayal of the market before the crash focuses largely on massive speculation of overvalued stocks which were inevitably going to topple and take the wealth of the shareholders down with it. After all, the prices could not continue to go up forever. Widespread speculation was no doubt a

This document is authorized for use only by Yen Ting Chen in FInancial Markets and Institutions taught by Nawal Ahmed Boston University from September 2014 to December 2014.

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).

There is a sense of complexity today that has led many to believe the individual investor has little chance of competing with professional brokers and investment firms. However, Malkiel states this is a major misconception as he explains in his book “A Random Walk Down Wall Street”. What does a random walk mean? The random walk means in terms of the stock market that, “short term changes in stock prices cannot be predicted”. So how does a rational investor determine which stocks to purchase to maximize returns? Chapter 1 begins by defining and determining the difference in investing and speculating. Investing defined by Malkiel is the method of “purchasing assets to gain profit in the form of reasonably

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.

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

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

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

Within the business disciplines, we are fortunate to have two major paradigms (schools of thought): rationalist and behavioralist. An ideological/theoretical conflict has existed between the two paradigms for over 50 years. Is human decision behavior more consistent with the rationalist models or behavioralist models? Behavioral finance has grown out of this conflict and will likely result in the resolution of the conflict as time passes.

Richard Roll, and University and Auburn, University of Washington, and University of Chicago educated economist, began his career researching the effect of major events of stock prices. This experience likely helped him reach the two conclusions he makes in his 1977 “A Critique Of The Asset Pricing Theory’s Tests”, one of the earliest and most influential arguments against CAPM. In the paper, Roll makes two major claims: that CAPM is actually a redundant equation that just further proves the concept of mean-variance efficiency, and that it is impossible to conclusively prove CAPM. His first claim relates to mean-variance efficiency: the idea that mathematically one must be able to create a portfolio that offers the most return for a given amount of risk. Roll claims that all CAPM is doing is testing a portfolio’s mean variance efficiency, and not actually modeling out projected future returns. The second claim in the paper is that there is not enough data about market returns for CAPM to ever prove conclusive. Even if modern technologies could help alleviate some of the burden of testing market returns for publicly traded equities, there is still no way to account for the returns of less liquid markets, where there is less public information. This means it is impossible for

““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)

Investing behavior should be driven by information, analysis, and self-discipline, not by emotion or ‘hunch.’