circa review: who runs it, and are the odds any good?
4.55%
median margin
12.1%
best price on board
1,387
markets · 7 days
Across 1,387 markets observed in the last 7 days (6 sports, 11 leagues), circa's median bookmaker margin was 4.55% — rank #12 of 141 tracked books (lower is better for bettors). Where at least five independent operators priced the same market, circa had the single best price 12.1% of the time.
Margin, last 11 days daily median across every circa market we captured · +0.0 pts over 11 days (stable)
Is circa trustworthy?
2/5checks
verified
verified
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Operating company
Not established — Omenizer has not yet verified who operates this book. That is a gap in our research, not a finding about the book.
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Licence
Not established.
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Licensed markets
US — reported to us and not yet verified against a regulator, so treat as a lead rather than a fact.
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Fees
No commission — cost is in the prices, about $4.35 per $100 staked all in
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What Omenizer has measured
1,387 markets across 6 sports and 11 leagues in the last 7 days, priced against the rest of the market.
How circa's prices compare
| Market family | Median margin |
|---|---|
| Moneyline / match result | 3.48% |
| Handicaps / spreads | 4.63% |
| Totals | 4.76% |
circa margin by sport
| Sport | Median margin | Best price | Markets (7d) |
|---|---|---|---|
| Baseball | 4.34% | 15.7% | 769 |
| American Football | 4.76% | 10.1% | 303 |
| Tennis | 3.50% | 6.4% | 136 |
| Basketball | 4.76% | 6.3% | 108 |
Who runs circa
Availability: licensed in US.
The margin is the bookmaker's built-in fee: the amount by which its implied probabilities exceed 100%. A 4.55% margin means that, on a typical circa market, prices pay out 4.55% less than a fair-value book would. Omenizer's fair prices remove this margin using sharp reference sources — the methodology explains how.
FAQ
- Is circa legit?
- Omenizer has not yet verified which company operates circa or what licence it holds — a gap in our research rather than a finding against the book. Independently of that, Omenizer has measured 1,387 circa markets in the last 7 days against the rest of the market, so its prices are observable rather than taken on trust. We publish the checks we can evidence and flag the ones we cannot — we do not certify bookmakers.
- Who owns circa?
- Omenizer has not yet verified the company behind circa. We record an operator only when we have read it on the operator's own site or a regulator's register, so this is an unfilled gap rather than a guess we declined to make.
- Is circa licensed?
- Not established — we have not confirmed a licence for circa.
- What is circa's betting margin?
- Measured across 1,387 markets in the last 7 days, circa's median margin (overround) was 4.55% — rank #12 of 141 bookmakers Omenizer tracks. Lower is better for bettors.
- How often does circa have the best odds?
- Where at least five independent operators priced the same market (clone brands sharing one price feed count once), circa posted the single best price 12.1% of the time over the last 7 days.
- How is circa's margin measured?
- Omenizer records every price on every tracked market, converts them to implied probabilities, and sums each market's sides; the amount over 100% is the bookmaker's margin. The figure here is the median across all of the book's observed markets — measured, not quoted from marketing material.