Hold & Vig Calculator

What Is Hold and Why It Matters

In a perfectly fair market, the implied probabilities of all outcomes sum to exactly 100%. In reality, they sum to 103-108% at most books. That excess is the hold. Reduced-juice books like Pinnacle or BookMaker.eu often hold just 2-3% vs. 4.5%+ at recreational books. Over hundreds of bets, the difference in hold is the difference between winning and losing.