Underdog built a pick'em empire on a number that holds still. You tap more or less on a player, the app shows your multiplier before you commit, and the deal never moves. Underdog Predict, the company's prediction market, throws that certainty out. The number is now alive: a price set by a live market, quoted in cents, moving while you watch. So the honest Underdog Predict review question in 2026 is not whether it is legit, because a federal license settles that. It is whether a pick'em player is ready for a product where the price is the whole game. There is one translation that turns the unfamiliar screen into something a daily fantasy player already understands, and it is the hinge this entire review turns on. It is waiting for you a few sections down.
The Quick Answer
Underdog Predict is a real, CFTC-licensed sports prediction market that as of July 18, 2026 runs on Underdog's own federally regulated exchange (UDX), letting you buy and sell "Yes/No" event contracts on games in the same app you already use for pick'em. It is legitimate and available in more than 30 states, but it is a fundamentally different product from Underdog's fantasy picks, with a moving market price instead of a fixed multiplier and no welcome promo yet. How it actually works, where it is legal, what it costs, and who it actually fits are all below.
What Underdog Predict Actually Is In 2026
Start with what changed this summer, because it is bigger than a new tab. Underdog put prediction-market access inside its app back in fall 2025, but at the time it was only a storefront: the contracts you traded were listed and settled by other companies' CFTC exchanges, first Crypto.com's derivatives arm and later Kalshi. Underdog handled the app, the audience, and the sports; someone else ran the actual market.
Not anymore. In March 2026 Underdog acquired a Designated Contract Market and a Derivatives Clearing Organization and rebranded them UDX; it is also a registered Futures Commission Merchant. Stack those three together and Underdog became the first sports company to hold the full set of CFTC licenses a prediction market needs to run end to end. On July 15, 2026 UDX self-certified its first sports event contracts, in baseball and basketball, and on July 18 Underdog launched prediction markets on its own exchange. "Prediction markets are largely about sports, and Underdog is the best at sports," CEO and co-founder Jeremy Levine said in announcing the move, which tells you exactly who this product is aimed at: the sports fan who was already there.
None of that is marketing air. Underdog says it has processed roughly $6.5 billion in notional prediction-market volume since September 2025, which it puts third among US operators. So this is not a startup experiment bolted onto a fantasy app. It is one of the larger prediction-market businesses in the country, now sitting on rails it owns. If the category itself is new to you, our primer on how prediction markets work covers the mechanics from the ground up; the rest of this review assumes you want the Underdog-specific read.
How It Works: Contracts, Not Multipliers
Here is the part that trips up first-timers, and it is the reason the earlier promise matters. On Underdog Predict you do not get a payout multiplier. You buy a contract tied to a "Yes" or "No" outcome, and every contract trades somewhere between 1¢ and 100¢ (that is, $0.01 to $1.00). If your side is right when the event resolves, each contract you hold pays out exactly $1. Your profit is the gap between what you paid and that dollar.
Buy a contract at 40¢ and, if it hits, you collect $1, a 60¢ profit on 40¢ risked. Buy the same outcome after the market has moved to 75¢ and the identical win only nets you 25¢. Same game, same result, very different return, and the difference is entirely in the price you got in at. That is the core mental model: you are not locking a multiplier, you are buying a probability and hoping you paid less than it was worth.
The one line to remember: a contract's price in cents is the market's probability. A 63¢ contract is a 63% market; a 40¢ contract is a 40% market; a 50¢ contract is a 50% coin flip. Everything else on the screen is a footnote to that single translation.
The other feature with no pick'em equivalent is that you can sell your position before the event ends. If you bought a team's "Yes" at 40¢ and it climbs to 70¢ at halftime, you can sell and bank the move without waiting to see if the outcome actually lands, the way you would trim a stock. A pick'em entry is locked the moment you submit it; a Predict contract is tradable right up until it settles. Underdog covers the usual roster of sports here too, with contracts spanning the NFL, college football, the NBA and college basketball, MLB, the NHL, and soccer.
That live, sellable price is the whole reason a Predict contract behaves nothing like an Underdog pick, which is exactly where a DFS player's instincts either help or hurt.
The DFS-Player Lens: What Changes When Pick'Em Becomes A Market
This is the section no generic review writes, and it is the one that matters most if you came from the fantasy side of the app. On Underdog pick'em, the house sets a projection and a fixed multiplier, and your only job is to decide whether the player goes over or under. The number is handed to you. On Predict, there is no house line — the price is whatever other traders have pushed it to, and it moves on news, money, and time.
Lined up side by side, the two products barely resemble each other:
| Underdog Pick'Em | Underdog Predict | |
|---|---|---|
| The Number | A fixed multiplier, shown before you enter | A live contract price (1¢–100¢) that moves |
| Who Sets It | Underdog's projection | The market — other traders |
| Payout | Multiplier on your entry | $1 per winning contract |
| Can You Exit Early? | No, locked at submit | Yes, sell any time before it settles |
| Your Edge | Beating a soft projection | Buying below the true probability |
That flips what your edge even is. In pick'em you are hunting a soft projection; in a prediction market you are hunting a soft price. The skill that carries over cleanly is the one good DFS players already have: an opinion on the real probability of an outcome, and the discipline to only act when the posted number disagrees with it. If your read says a team should be a 55% favorite and the "Yes" contract is trading at 48¢ (a 48% market), that is the same value hunt you run on a mispriced prop, just denominated in cents instead of a multiplier. The difference between prediction markets and sportsbooks is really this: one bakes its cut into a line it controls, the other lets a crowd set the price and lets you leave whenever you want.
The instinct to unlearn: in pick'em you never had to watch a number after you locked it. On Predict, a price moves against you as fast as it moves for you, so the discipline is deciding your own probability before you look at the market — not letting the market tell you what to think.
The instinct that will hurt you is treating a contract like a pick'em leg you can size up and forget. A market price moves against you as fast as it moves for you, and the ability to sell early is a double-edged tool: it rewards discipline and punishes the itch to trade every wiggle. Same wallet, same app, genuinely different game. Hold that thought, because the "no fixed multiplier" reality also shapes what the product costs you, which I get to below.
Where Underdog Predict Is Legal
Availability is the other half of "is it legit," and Underdog's federal license genuinely helps here. Because UDX is CFTC-regulated rather than licensed state by state, Underdog Predict is live in more than 30 states plus Washington, D.C., a far wider map than most state-licensed sportsbooks manage. Reporting across the prediction-market trades in August 2026 lists a footprint in the low-to-mid 30s.
The more useful thing to know is which states are out, because the pattern is telling: Underdog Predict is not available in several of the biggest legal-sportsbook states, including New Jersey, New York, Pennsylvania, Arizona, Massachusetts, and Colorado, among others. If you live somewhere with an established, heavily regulated sportsbook market, there is a real chance you cannot trade Predict there yet. The minimum age is 18+, rising to 19+ in a couple of states (Alabama and Nebraska), which is younger than the 21+ many sportsbooks require.
One honest caveat, and it is the same one that applies to every product in this category: prediction-market jurisdiction is being actively litigated, and state lists change. Treat the footprint above as current, not permanent, confirm Underdog operates where you live using its own eligibility check before you fund anything, and understand that whether prediction markets are legal is still a moving legal question, not a settled one. None of this is legal advice.
Play responsibly. Underdog Predict is real-money trading, so only put up money you can afford to lose, and never chase a loss with a bigger position. If it stops being fun, step away. Call or text 1-800-GAMBLER if you need help. Must be of eligible age in a state where Underdog Predict operates.
Worked Example: Reading A Contract Price Like A DFS Player
Numbers make the mental model concrete, so run one. Underdog Predict posts an NBA team's "Yes" (they win the game) at 63¢. The first thing to do is the translation I promised at the top, and it is one step: a contract's price in cents is its implied probability. 63¢ means the market thinks that outcome is about a 63% shot. That is the whole trick, and once you see it, the screen stops being foreign.
From there you can put it in the language you already read. A 63% implied probability is roughly -170 in American odds, the same as laying $170 to win $100. The same conversion runs across the board: a 40¢ contract is a 40% shot (about +150), and a 75¢ contract is a 75% favorite (about -300). Now the value question is identical to the one you run on any prop: does your number say this team is better than 63%? If your model has them at 70%, the contract is cheap and you have an edge; if your read is 58%, the market is charging you more than the outcome is worth and you pass.
| What You See | What it means | The DFS translation |
|---|---|---|
| Contract At 63¢ | ~63% implied probability | About -170 in American odds |
| Your Read: 70% | Market is underpricing it | Value — the number is soft |
| Your Read: 58% | Market is overpricing it | No bet — you'd be overpaying |
The row that decides it is the middle one: value only exists when your probability is higher than the price. That is the same disagreement you hunt when a fantasy projection looks a half-point off, just measured in cents. If you want to sanity-check how a contract's price lines up against what a sportsbook is quoting on the same game, our free bet and odds converter turns that 63¢ into American odds (and back) in a second, so you can see instantly whether the market or the book is giving you the better number. That comparison — contract price versus book price on the same outcome — is the closest thing to an edge the crossover audience has, and it costs nothing to run.
What It Costs, And The Offer (Or Lack Of One)
Two things to be straight about here. First, the cost. Underdog does not publish a separate posted commission the way a pure exchange like ProphetX advertises a flat trading fee, so on Predict your real cost is the price itself: you buy a contract for less than $1, collect $1 if you are right, and the "vig" lives in how tightly the market prices each side rather than in a line item. Because the two sides of a market rarely add up to exactly $1.00, that spread is where the house economics sit. Confirm any current fees in the app before you fund, since that is the one number Underdog can change without changing the product.
Second, the promotion, and this is where an honest review beats an affiliate pitch. As of this writing, Underdog has not released a welcome offer or promo code for Predict. Multiple prediction-market trackers confirm the same thing: there is no code to enter and no deposit match to claim on the prediction-market side yet. Anyone quoting you an "Underdog Predict promo code" today is almost certainly recycling a code from Underdog's separate fantasy pick'em game, which runs on entirely different terms. We do not have an affiliate relationship on Predict, so treat this piece as information rather than a sign-up pitch: the value here is understanding the product, not a bonus. Deposits, for what it is worth, run through debit and credit cards (Apple Pay included) and Trustly bank transfers; PayPal, Cash App, and Venmo are not accepted for prediction-market funding.
Honest Pros And Cons
Pros
- A real CFTC-licensed prediction market on rails Underdog owns outright (the full DCM+DCO+FCM stack), already third in the US by volume — regulated infrastructure, not a gray-area sweepstakes product.
- Available in more than 30 states plus D.C., including big states with no legal sportsbook of their own (confirm your state on Underdog's eligibility check).
- 18+ in most states, younger than the 21+ most sportsbooks require.
- You can sell contracts before an event resolves, which no pick'em entry lets you do — an exit door a fantasy lineup never had.
- It lives inside the app a huge fantasy audience already has, with one login and one wallet, so the switching cost from pick'em is almost nothing.
Cons
- No welcome offer or promo code on the prediction-market side yet, so there is no bonus to soften a first deposit.
- It is a genuinely different, more volatile product than pick'em: the price keeps moving after you buy, and the itch to trade every wiggle will punish a player used to a locked entry.
- Not available in several of the largest regulated-sportsbook states (NJ, NY, PA, AZ, MA, CO, and others).
- Underdog does not publish a clean fee number, so your cost is buried in the market spread rather than posted up front the way a pure exchange like ProphetX shows it.
- The state footprint and age rules can shift while the category is litigated, so today's map is not a guarantee.
The Verdict
Come back to where this started. The pitch is that Underdog, the best-known name in sports pick'em, now runs its own federally licensed prediction market, and the license is real: this is a legitimate, regulated product, not a scam and not a sweepstakes dodge. But "legit" was never the interesting question. The interesting question was whether a pick'em player is ready to trade a live price instead of tapping a fixed multiplier, and the answer is that you are ready the moment you internalize the one thing this review keeps returning to: the cents are the probability. A $0.63 contract is a 63% market, roughly -170, and your only job is to know when your own number says that price is wrong. That is the same value hunt you already run, wearing different clothes.
So who should open it? If you are a DFS player who already thinks in probabilities and wants the flexibility to buy, sell, and shop a number the house does not control, Predict is a natural next step, and the fact that it is baked into an app you already use lowers the friction to almost nothing. If you want a bonus to chase, a fixed multiplier you can set and forget, or you live in one of the excluded sportsbook states, this is not your moment, either because the offer is not there or the product is not built for how you play. Either way, verify your own state first, start small, and price the contract before you buy it. For where Underdog Predict sits against the rest of the field, our rundown of the best prediction-market platforms ranks the major names, the Kalshi review covers the category's biggest exchange, and the sports prediction markets hub tracks how the whole space is moving. Before you commit real money to any of them, it is worth reading the prediction-market fine print so the settlement rules never surprise you.
Play responsibly and only with money you can afford to lose. Prediction-market trading carries real risk, including the loss of the funds you put up. Eligibility, minimum age, and available states vary and can change, and terms apply. If it stops being fun, step away, and if you or someone you know has a gambling problem, call or text 1-800-GAMBLER or visit ncpgambling.org/chat.
Frequently Asked Questions
Is Underdog Predict legit? Yes. As of July 18, 2026 Underdog Predict runs on UDX, Underdog's own CFTC-licensed exchange, and Underdog holds the full stack of federal prediction-market registrations (Designated Contract Market, Derivatives Clearing Organization, and Futures Commission Merchant). It is a federally regulated event-contract market, not a sweepstakes product or a traditional sportsbook.
How does Underdog Predict work? You buy and sell "Yes/No" contracts on sports outcomes. Each contract trades between $0.01 and $1.00, and its price is its implied probability, so a $0.63 contract reflects a market view of about 63%. If your side wins, each contract pays $1; your profit is the difference from what you paid. You can also sell a contract before the event resolves.
What states is Underdog Predict available in? More than 30 states plus Washington, D.C., thanks to its federal CFTC license. It is notably not available in several big legal-sportsbook states, including New Jersey, New York, Pennsylvania, Arizona, Massachusetts, and Colorado. The list changes as the category is litigated, so confirm your state on Underdog before funding. The minimum age is 18+ (19+ in a couple of states).
Is there an Underdog Predict promo code? Not as of this writing. Underdog has not released a welcome offer or promo code for its prediction market. Any "Underdog Predict promo code" you see quoted is almost certainly a code for Underdog's separate fantasy pick'em game, which has different terms.
How is Underdog Predict different from Underdog Pick'Em? Pick'em is daily fantasy: fixed player projections and a set multiplier you know before you enter. Predict is a prediction market: a live, moving contract price set by other traders, with no fixed multiplier and the ability to sell your position early. Same app, different product.
Does Underdog Predict charge fees? Underdog does not publish a separate posted commission for Predict. Your cost is effectively the market price itself, since the two sides of a contract market rarely add to exactly $1.00 and that spread is where the economics sit. Confirm any current fees in the app before you fund an account.
