Kelly Criterion Ultimate Guide to Optimal Betting and Investing

3072 reads · Last updated: December 17, 2025

The Kelly Criterion is a mathematical formula used to determine the optimal size of a series of bets or investments. Proposed by John Larry Kelly in 1956, the Kelly Criterion aims to optimize investment strategies by maximizing the long-term growth rate of capital. This criterion is based on probability and information theory, taking into account the probability of winning a bet and the potential payoff, helping investors make optimal decisions under uncertainty. The Kelly Criterion is widely applied in financial markets, gambling, and other areas requiring risk management. While its calculations can be complex, it is considered an effective tool for capital management.

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