Tools

Hold Calculator

See the book's margin (hold), overround, and vig from any market's prices.

Outcome 1

Outcome 2

Outcome 3 (optional)

Outcome 4 (optional)

Hold

4.55%

Overround

104.76%

Vig

4.76%

Hold is the book’s expected margin on balanced action; overround is the total implied probability across all outcomes; vig is how much that exceeds 100%.

Free and no signup. For educational use - not betting advice.