If you opened Novig recently expecting to see a moneyline and found a percentage sitting where it used to be, you are not imagining it and you are not alone. Novig has moved its entire odds display off standard American odds and onto implied probability, and it caught plenty of sharp, experienced bettors off guard. That reaction is normal. Nobody enjoys it when a screen they have read a thousand times starts speaking a different language.
Here is the good news up front: nothing about the games changed, nothing about the math changed, and nothing about your edge changed. Only the label did. I want to walk through the Novig odds format change properly, why it happened, what the new numbers actually say, and how to get comfortable with them fast, because this is not a one-platform quirk. The regulated end of the prediction market industry is heading here, and along the way I will show you the one number the new format exposes that American odds always kept half hidden.
The Quick Answer
Novig switched from American odds to implied probability because it now operates as a federally regulated exchange, and regulated exchanges quote contracts as probabilities, the same way a Kalshi price is a probability. A moneyline and a probability are the same number written two ways, so your reads, your models, and your edge carry over untouched. The full translation table, the two formulas that drive it, and the sportsbook margin the new format puts in plain sight are all below.
Free: The Weekly PM Market Brief
The 8-model panel's graded record, the week's biggest market-vs-model gaps, and what's spiking next. One email, Sundays.
Unsubscribe anytime, one click. We never share your email.
Why Novig Dropped American Odds
Novig did not change its board for branding reasons. The change is regulatory. The CFTC, the Commodity Futures Trading Commission, is the federal agency that oversees derivatives and now event-contract prediction markets like Kalshi, Polymarket, and Novig. On June 16, 2026, the CFTC granted Designated Contract Market status to Ludlow Exchange, LLC, the exchange entity behind Novig, per the CFTC's designation order, and on August 4, 2026, Novig relaunched as a real-money exchange under that designation, per its own relaunch announcement. A Designated Contract Market is a federally regulated exchange, not a sportsbook, and why an exchange is not a sportsbook breaks down what that split means in practice.
Once a venue is a regulated exchange, probability pricing becomes the natural display, because an exchange contract trades between $0 and $1. A contract that pays $1 if the Yankees win trades at some price in that range, and that price is the market's probability. It is the convention Kalshi has used since day one, and it is the standard way a regulated derivatives contract is priced.
A probability board is the exchange-native convention for these contracts, and it fits the regulated-market framework more cleanly than sportsbook-style odds. Novig is one of the first sports-focused platforms to make the display switch. I expect the rest of the field to land in the same place, and if you are weighing Novig against its closest rival, ProphetX vs Novig covers that head-to-head.
A Moneyline Was Always A Probability
The next part should put people at ease. American odds and implied probability are one number expressed two ways. There is no new math to learn, only a translation step to get used to.
Going from a probability to the old American label takes two formulas, one for each side of 50%:
- Favorite (Probability Above 50%): American odds = -(Probability ÷ (100 - Probability)) × 100
- Underdog (Probability Below 50%): American odds = ((100 - Probability) ÷ Probability) × 100, and the result is positive: 40% gives you the old +150
Going the other direction, from the old American number back to a probability, if you ever want to check a line you remember against what Novig shows now:
- Favorite (Negative Odds): Probability = |Odds| ÷ (|Odds| + 100) × 100
- Underdog (Positive Odds): Probability = 100 ÷ (Odds + 100) × 100
Run a New York Yankees moneyline through it. Say Novig shows 60% on the Yankees, a number picked for the walkthrough, not a live quote. Sixty divided by forty is 1.5, times 100 is 150, and since the Yankees are the favorite the old label was -150. Same MLB game, same price, same information you would have used to make the decision a month ago, just presented as the number that was always underneath it. The other side of that hypothetical market sits near 40%, which is 2.50 in decimal odds: risk $100 to collect $250 back, a $150 profit, if the underdog comes through.
That 60% is also the price in payout terms, and this is the framing I have come to prefer. A 60-cent contract turns $100 into about $167 when it hits and nothing when it does not. No sign to flip, no favorite-versus-underdog rule to remember. The percentage tells you the market's read and the cost of the position in one number.
The Novig Odds Conversion Table
The conversion chart I put together, the one to keep open in a tab for the next few weeks, is reproduced here as a table so you can go in either direction without doing mental math mid-game. Percent is what Novig shows. Decimal is the odds form we use on prediction market pages when an odds format is needed at all. The last column is the retired American label, for anyone still translating from memory.
| Novig Shows | Decimal odds | Old American label |
|---|---|---|
| 5% | 20.00 | +1900 |
| 10% | 10.00 | +900 |
| 15% | 6.67 | +567 |
| 20% | 5.00 | +400 |
| 25% | 4.00 | +300 |
| 30% | 3.33 | +233 |
| 35% | 2.86 | +186 |
| 40% | 2.50 | +150 |
| 45% | 2.22 | +122 |
| 50% | 2.00 | +100 |
| 52.4% | 1.91 | -110 |
| 55% | 1.82 | -122 |
| 60% | 1.67 | -150 |
| 65% | 1.54 | -186 |
| 70% | 1.43 | -233 |
| 75% | 1.33 | -300 |
| 80% | 1.25 | -400 |
| 85% | 1.18 | -567 |
| 90% | 1.11 | -900 |
| 95% | 1.05 | -1900 |
Decimal odds are 100 divided by the percentage; American values are rounded to the nearest whole number. Any probability not on the table runs through the formulas above, or through the odds converter, which does all three formats at once.
The row I want you to look at is 52.4%. That is the -110 you have seen as the standard price on a sportsbook point spread, and it is the number people mean when they call a spread bet "basically a coin flip." It is not a coin flip. A coin flip is the 50% row directly above it, and the 2.4 points between those two rows is the whole story of the next section.
Where The New Format Beats The Old One
There is a real upside here beyond a regulatory box getting checked. On a peer-to-peer exchange like Novig, there is no bookmaker building a margin into the price, so the probabilities on the two sides of a matchup should add up close to 100%. (Novig does charge taker fees on some order types; those are stated separately rather than hidden in the number, and the fee schedule is covered in how money moves on Novig.)
Now hold that against a standard sportsbook line at -110 on both sides. Each side converts to roughly 52.4%, so the two sides combine to 104.8%. That extra 4.8% is the sportsbook's built-in margin, the overround, and in practice it means the book keeps about 4.6 cents of every dollar wagered across both sides, the hold. The margin is far easier to spot once everything is expressed as a probability instead of a pair of odds. Written as -110 and -110, the margin is invisible unless you already know the trick. Written as 52.4% and 52.4%, it is sitting right there in the sum. How the margin grows as the juice moves walks through the arithmetic if you want to see how quickly a few cents of juice (the extra you pay past even odds) compounds.
The 4.8% is the number I promised at the top, and it is why I have stopped treating the switch as a nuisance. The new format does more than align with the regulated exchange framework. It makes the real cost of a position more transparent than American odds ever did, and once you read prices as probabilities, the question you ask changes from "what does this pay?" to "is this outcome really that likely?" That second question is the one that finds value; the first only tells you the size of the ticket.
The habit that follows from it is simple. Before I take a price on Novig, I check it against the fair number for the same game on our live odds screen, which lines up every major sportsbook's price on the same game and shows the fair, de-vigged number (the price with the book's margin, the vig, stripped back out) beside them. If Novig's executable percentage, after any fee, sits below the de-vigged market probability for the same outcome, the exchange is offering the better price. That comparison used to require converting three American odds in your head. In the new format it is two percentages next to each other.
How To Get Comfortable With It This Week
The adjustment is smaller than it feels on day one, and it goes faster if you force a few reps instead of waiting for it to click.
- Run Three Real Lines Through The Table By Hand, And Check Yourself Against One Row. Pick a favorite, an underdog, and something near 50% from tonight's MLB board and convert each once in each direction. The self-check I use: 65% should come out to 1.54 in decimal, the old -186. If your answer lands on the plus side, you ran the underdog formula on a favorite; anything above 50% has to come out negative, and that is the one mistake this format makes impossible once you stop translating.
- Read The Two Sides Together. For any Novig matchup, add the price you would actually pay to buy each team. A sum sitting right at 100% is a tight market; the further above 100% it drifts on a lightly traded game, the wider the spread you are paying, and this format shows it without a single conversion. On a sportsbook the same check takes two conversions first.
- Anchor To A Fair Number Instead Of A Remembered Line. The line you remember from last month is a sportsbook price with margin baked in. Compare Novig's percentage to a de-vigged number instead, and if you want a starting point for tonight's board, our free expert picks post the price attached to every play. The toolkit behind those picks, the odds screen and the fair-price comparison above, starts with a free week trial.
Age minimums are set by the platform rather than by the regulator: Novig requires users to be 21 or older, while Kalshi, another CFTC-regulated exchange, admits traders at 18+. Availability depends on your state, and several states have challenged sports event contracts in court, so confirm eligibility in the app before funding. Every price on an exchange is a risk, not a promise.
- ProphetX Vs Novig: Which Betting Exchange Wins? (2026)
- Can Kalshi Change Market Rules After You Bet? What The Rulebook Allows
- Novig Sign Up Bonus August 2026: Deposit $10, Get $25
- NoVig Customer Service: How To Get Help, And What They Can Actually Fix
- NoVig Deposits And Withdrawals: What To Expect Getting Money In And Out
The Bottom Line
Nothing about how you evaluate a game, build a model, or find value needs to change. The only adjustment is reading the board in a new format for a little while, and the 52.4% row on the table above is the reason to welcome it: the margin you have been paying at a sportsbook was always there, and now the format shows it to you.
Treat this as the first of several display changes the regulated end of this industry is going to make together over the next year or two, and take one decision rule with you, the one I now run before every position: compare Novig's percentage, after any fee on the order type, to the de-vigged fair price for the same outcome, and only take the position when the gap is still there after costs. Novig made the price more honest without making the game one bit harder to read, and that is a trade worth getting used to.
These are market prices and model estimates, not predictions of fact and not financial advice. Novig is a CFTC-regulated event-contract exchange; Novig requires users to be 21+, other CFTC exchanges admit traders at 18+, and availability varies by state.
