TwinSpires: margins and market data
Across 2,234 markets observed in the last 7 days (5 sports, 26 leagues), TwinSpires's median bookmaker margin was 8.24% — rank #83 of 99 tracked books (lower is better for bettors). Where at least five books priced the same market, TwinSpires had the single best price 12.6% of the time.
| Market family | Median margin |
|---|---|
| Moneyline / match result | 8.10% |
| Handicaps / spreads | 8.85% |
In the last 90 days, TwinSpires posted the board-leading price on 16 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 8.24% margin means that, on a typical TwinSpires market, prices pay out 8.24% less than a fair-value book would. Omenizer's fair prices remove this margin using sharp reference sources — the methodology explains how.
See where TwinSpires beats fair value — free account