[PDF] Top 20 Testing information efficiency in the Portuguese stock market

... when the market reacts to the announcement. Also in line with this previous study, our findings suggest that the two days following an announcement of good news show negative abnormal ... See full document

... on the firm’s capital market ...on the NYSE, American Stock Exchange (AMEX) and the NASDAQ, for a testing sample period starting in July 1973 and ending on June ...that ... See full document

... as the imitation disseminates, “it reinforces itself in that individuals show an increasing tendency to imitate” (Orlean, 1989, ...increasing the chances that those that ignored it at first, could ... See full document

... understand in more depth this thesis it is important to understand some of his ...dataset in comparison with other researches, on the same subject. In the end only 738 events were taken ... See full document

... context, the World Commission on Environment and Development created by the United Nations Organization made a huge contribution in 1987 when it published the report "Our Common ... See full document

... Abstract. In recent years there has been a closer interrelationship between several scientific areas trying to obtain a more realistic and rich explanation of the natural and social ...emphasized the ... See full document

... light in the overall discussion of market efficiency, as well as suggest a profitable practical investing strategy based on buying the fewer stocks who registered higher value and ... See full document

... Under the assumption of economic rationality, investors choose to maintain efficient portfolios, ...maximize the return for a certain level of risk, or that minimize the risk for a certain level of ... See full document

... Nowadays the State represents a human community in a fixed territory and that, within its borders, establish a form of organization of sovereign political power in order to guarantee security, ... See full document

... to the stock market efficiency theory, it is not possible to consistently beat the ...returns. In fact there is evidence that momentum investing strategies provide abnormal ... See full document

... traded in the financial markets such as Real Estate and Companies Strategic ...Regarding the other two sectors, Sports and Information Tech- nology, the explanation for having ... See full document

... As the aim of this work project is to find a method of VaR calculation that works effectively in the Portuguese stock market, regardless of the financial market ... See full document

... or, in other words, is an emulation of a biological neural ...processes information using a connectionist approach to computation. The ANN is a powerful tool for nonlinear time series models and, ... See full document

... event in the history of any ...on the relation between CEO turnovers and stock prices ...Overall, the aim of this dissertation is to study the Portuguese stock ... See full document

... examines the effect of market variables on the movement stock prices in ...if the asset prices reflect all available market ...examined the extent to which some ... See full document

... momentum in the stock market ...suggest the equilibrium model does not properly account for the risk factor and suggest return continuation due to misspecification of CAPM; ... See full document

... explore the variation of financial markets to macroeconomic variables theoretically and ...on the relation between stock market prices and fundamental economic ...indicators. The ... See full document

... confirms the existence of value adding momentum strategies in stock trading consisting in buying past winners and selling past losers and that the observed strategies produced ... See full document

... sheets. The strong form of informational efficiency implies that all pieces of public or privileged information are reflected in stock exchange ...of information (named shocks) ... See full document

... explore the existence of return continuation in the Portuguese Stock Market, thus investigating its efficiency at the weak form level (Fama, ...well in ... See full document