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Published online by Cambridge University Press: 19 October 2009
There now exists a formidable documentation of the hypothesis that time series of common stock prices follow random walks. Taking these empirical demonstrations as convincing, additional work has largely fallen into two classes: (a) direct theorizing and testing of the exact nature of the random price-generating process; and (b) theorizing and testing of the implications of random walks in common stock price for the values of related securities such as warrants and convertibles.