A bound on the financial value of information
Barron, A.R.; Cover, T.M.
Information Theory, IEEE Transactions on
Volume 34, Issue 5, Sep 1988 Page(s):1097 - 1100
Digital Object Identifier 10.1109/18.21241
Summary:It is shown that each bit of information at most doubles the
resulting wealth in the general stock-market setup. This information
bound on the growth of wealth is actually attained for certain
probability distributions on the market investigated by J. Kelly (1956).
The bound is shown to be a special case of the result that the increase
in exponential growth of wealth achieved with true knowledge of the
stock market distribution F over that achieved with incorrect
knowledge G is bounded above by the entropy of F
relative to G
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