Search results
Results from the WOW.Com Content Network
The efficient-market hypothesis (EMH) [a] is a hypothesis in financial economics that states that asset prices reflect all available information. A direct implication is that it is impossible to "beat the market" consistently on a risk-adjusted basis since market prices should only react to new information.
Efficient market theory, or hypothesis, holds that a security's price reflects all relevant and known information about that asset. One upshot of this theory is that, on a risk-adjusted basis, you ...
Another theory related to the efficient market hypothesis created by Louis Bachelier is the "random walk" theory, which states that prices in the financial markets evolve randomly. Therefore, identifying trends or patterns of price changes in a market can't be used to predict the future value of financial instruments.
Eugene Francis "Gene" Fama (/ ˈ f ɑː m ə /; born February 14, 1939) is an American economist, best known for his empirical work on portfolio theory, asset pricing, and the efficient-market hypothesis. He is currently Robert R. McCormick Distinguished Service Professor of Finance at the University of Chicago Booth School of Business.
The Nobel Committee cited what we know as his and Kenneth French's "efficient-market. Eugene Fama's shared economics Nobel Prize last week surprised no one except, oh, the few who know the reality ...
Firms and consumers take prices as given (no economic actor or group of actors has market power). The theorem is sometimes seen as an analytical confirmation of Adam Smith's "invisible hand" principle, namely that competitive markets ensure an efficient allocation of resources.
In law and economics, the Coase theorem (/ ˈ k oʊ s /) describes the economic efficiency of an economic allocation or outcome in the presence of externalities.The theorem is significant because, if true, the conclusion is that it is possible for private individuals to make choices that can solve the problem of market externalities.
The Grossman-Stiglitz Paradox is a paradox introduced by Sanford J. Grossman and Joseph Stiglitz in a joint publication in American Economic Review in 1980 [1] that argues perfectly informationally efficient markets are an impossibility since, if prices perfectly reflected available information, there is no profit to gathering information, in which case there would be little reason to trade ...