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Random Walk Theory states that share price movements have no predictable pattern and that it is unwise to extrapolate from previous movements. This is the opposite view to chartists who rely on past patterns of movement to predict future prices. In recent years, there has been little research interest in the theory, but a well-referenced article by Peterson, Ma, and Ritchey (1992) explains the earlier debates.
Rate of Return is the gain or economic benefit earned from the investment of resources in a commercial other economic activity. The return is calculated by comparing it to the amount of the investment in some way, usually in percentage terms. The return from an investment in a division or subsidiary may be expressed as an accounting rate ...
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