random-walk theory (of stock market prices)

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• Random walk — Theory that stock price changes from day to day are at random; the changes are independent of each other and have the same probability distribution. Many believers of the random walk theory believe that it is impossible to outperform the market… …   Financial and business terms

• random walk — Theory that stock price changes from day to day are accidental or haphazard; changes are independent of each other and have the same probability distribution. Many believers in the random walk theory believe that it is impossible to outperform… …   Financial and business terms

• Random walk hypothesis — The random walk hypothesis is a financial theory stating that stock market prices evolve according to a random walk and thus the prices of the stock market cannot be predicted. It has been described as jibing with the efficient market hypothesis …   Wikipedia

• Stock market crash — A stock market crash is a sudden dramatic decline of stock prices across a significant cross section of a stock market, resulting in a significant loss of paper wealth. Crashes are driven by panic as much as by underlying economic factors. They… …   Wikipedia

• Stock market — Financial markets Public market Exchange Securities Bond market Fixed income Corporate bond Government bond Municipal bond …   Wikipedia

• random walk — The theory that the *market prices of *common stock (and other items, like *commodities) exhibit unpredictable patterns, and do not reflect historical trends. The theory argues that stock prices behave unpredictably because stock markets are… …   Auditor's dictionary

• Stock market prediction — is the act of trying to determine the future value of a company stock or other financial instrument traded on a financial exchange. The successful prediction of a stock s future price could yield significant profit. Some believe that stock price… …   Wikipedia

• Stock selection criteria — is a strategy in which an analyst or investor uses a systematic form of analysis to determine if a particular stock constitutes a good investment which should be added to their portfolio. The objective of stock selection criteria is maximizing… …   Wikipedia

• Market timing — is the strategy of making buy or sell decisions of financial assets (often stocks) by attempting to predict future market price movements. The prediction may be based on an outlook of market or economic conditions resulting from technical or… …   Wikipedia

• Stock dilution — is a general term that results from the issue of additional common shares by a company. This increase in common shares of a stock can result from a secondary market offering, employees exercising stock options, or by conversion of convertible… …   Wikipedia

• Market capitalization — (often market cap) is a measurement of the value of the ownership interest that shareholders hold in a business enterprise. It is equal to the share price times the number of shares outstanding (shares that have been authorized, issued, and… …   Wikipedia