Kelly criterion is a specific Trading coordinate in the Bitcoin knowledge graph. In practical terms, it identifies the subject described here: A growth-optimal sizing formula highly sensitive to uncertain probability and payoff estimates. This definition is narrower than promotional usage and should be read together with the implementation, date and evidence attached to the entry.
Kelly criterion is best understood as part of a system rather than as an isolated definition. Its related coordinates show the mechanisms, incentives and historical records that give the term practical meaning.
Kelly criterion describes how participants value, trade or obtain exposure to bitcoin. Market behavior can affect adoption and mining economics, but it does not rewrite consensus rules. Price evidence and protocol evidence answer different questions.
Understanding Kelly criterion helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
Primary or authoritative records make these details checkable: the Kelly criterion chooses a fraction of capital that maximizes expected logarithmic wealth under explicit probabilities and payoff distributions; fractional Kelly is commonly used to reduce estimation sensitivity and drawdown. They should be verified before using the coordinate in analysis.
The practical limit is: Kelly is not a signal for bitcoin direction and full-Kelly sizing can be intolerably volatile; correlated bets, fat tails, leverage constraints, fees and probability error can turn an apparently optimal fraction into ruinous exposure. A definition, office, chart pattern or published claim is not by itself a prediction or Bitcoin consensus rule.
For the clearest picture, read this entry together with Position sizing, Trading expectancy, Risk of ruin, Risk management, Maximum drawdown, Bitcoin. The reverse links also lead from Position sizing, Maximum drawdown.