William Hill: margins and market data
Across 1,573 markets observed in the last 7 days (8 sports, 32 leagues), William Hill's median bookmaker margin was 6.67% — rank #23 of 99 tracked books (lower is better for bettors). Where at least five books priced the same market, William Hill had the single best price 5.9% of the time.
| Market family | Median margin |
|---|---|
| Moneyline / match result | 6.49% |
| Handicaps / spreads | 5.70% |
| Totals | 7.11% |
In the last 90 days, William Hill posted the board-leading price on 174 signals flagged by Omenizer's detection engine.
The margin is the bookmaker's built-in fee: the amount by which its implied probabilities exceed 100%. A 6.67% margin means that, on a typical William Hill market, prices pay out 6.67% less than a fair-value book would. Omenizer's fair prices remove this margin using sharp reference sources — the methodology explains how.
See where William Hill beats fair value — free account