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The Kelly criterion is a formula for how much of a bankroll to stake on a bet with a known edge, to maximize long-run growth. Many traders use a fraction of it, such as half Kelly, to reduce swings.
The Kelly calculator sizes a position from your probability and the Polymarket price.
Expected value (EV) · Hedging · Implied probability
The Kelly calculator sizes a position from your probability and the Polymarket price.
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