Home › Glossary › Expected value (EV)
Expected value is the average result of a bet over many repeats: each outcome's payoff times its probability, summed. A positive EV trade makes money on average if your probability is right.
The EV calculator turns your own probability and the Polymarket price into an expected profit per share.
Kelly criterion · Implied probability · Brier score
The EV calculator turns your own probability and the Polymarket price into an expected profit per share.
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