Underdog Predict Review & Promo Code GTODAYPM for October 2026
- Unified App Experience | The prediction markets are integrated directly into the existing Underdog Sports app, allowing users to manage DFS entries and event contracts within a single, polished interface.
- Frictionless USD Trading | This platform operates entirely with U.S. Dollars for all transactions and trades, removing the need for stablecoins or complex crypto wallets required by many other prediction exchanges.
- Innovative Combo Entries | Players have the unique ability to build hybrid slips that combine prediction market positions with traditional fantasy player picks, a feature that is currently exclusive to the Underdog ecosystem.
Underdog Predict brings prediction market trading into the same app that fantasy players already use for pick'em. Rather than building a lineup, you buy and sell Yes/No contracts tied to the outcomes of games and seasons, then either hold until settlement or sell early when the price moves in your favor. Underdog rolled out the product in September 2025, and since July 2026 every trade has run through its own CFTC-licensed exchange, Underdog Exchange (UDX).
That in-house exchange is a big reason we rate Underdog among the best sports prediction markets available today. Very few app-based competitors control their own exchange and clearinghouse, and Underdog has quickly grown into one of the highest-volume regulated prediction markets in the US. Add USD funding, a polished app, and a single balance shared with Underdog Fantasy, and it's one of the easiest places for a sports fan to start trading event contracts.
Use promo code GTODAYPM when you register through our Underdog Predict link to unlock the Keep Your Million game plus, in most eligible states, a 50% first-deposit match up to $1,000. Underdog's prediction markets are currently available in AL, AK, AR, CA, CT, DE, DC, FL, GA, HI, ID, IA, IL, IN, KS, LA, ME, MN, MO, MT, NE, NH, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VA, VT, WA, WI, WV, WY.
Below, we cover the welcome offer state by state, how Underdog's exchange and event contracts work, how to open and fund an account, which markets you can trade, the platform's biggest strengths and drawbacks, and how it compares with Polymarket and Kalshi.
Plus 50% First-Time Deposit Match up to $1,000 (State Dependent)
Make the Correct Prediction Pick to Score Your Payout
Spreads, Totals, Moneylines, and Parlays, all on Underdog
Plus 50% First-Time Deposit Match up to $1,000 (State Dependent)
Make the Correct Prediction Pick to Score Your Payout
Spreads, Totals, Moneylines, and Parlays, all on Underdog
Underdog Predict Promo Code and Welcome Offer for October 2026
Underdog bundles two new-user offers into a single sign-up. Enter code GTODAYPM when you join via our links, and you'll get a seat in the no-cost Keep Your Million game. Most eligible states add a 50% match on your first deposit as well.
Keep Your Million
This free-to-enter game hands each eligible new player a $1 million virtual pot, and no purchase is needed. You work through a run of as many as 20 sports questions, splitting what's left across Higher and Lower each time, and only the share on the correct side survives. Clear all 20 questions and the remaining pot converts into Underdog Bonus Funds.
Up to $1,000 With the 50% First-Deposit Match
Where it's offered, Underdog adds Bonus Funds equal to half your first deposit, capped at $1,000. Deposits start at $10, and a $2,000 deposit unlocks the maximum. The bonus posts within 72 hours. From there, your deposit and bonus each require a 1x playthrough inside 14 days before you can withdraw them.
The match is limited to new users, and your state determines both whether you qualify and how large the bonus can get. Here's the current breakdown:
| State Group | Available Offer and States |
|---|---|
| 🔮 Predictions-Only States | Keep Your Million only: CT, HI, ID, IA, LA, ME, MT, WA |
| 🎯 Pick'em and Predictions States | Keep Your Million + 50% Deposit Match up to $1,000 in Bonus Funds: AL, AK, AR, CA, DE, DC, FL, GA, IL, IN, KS, MN, MO, NE, NH, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VT, VA, WV, WI, WY |
| 🏈 Draft-Only States | Keep Your Million + 50% Deposit Match up to $1,000 in Bonus Funds: MD, MI, NJ, OH, PA |
Curious how this stacks up against traditional sportsbook welcome deals? Our roundup of current sportsbook bonuses puts them side by side.
Where Underdog Puts Its Prediction Markets
You won't see "Predict" or "prediction" labels on any menu. Instead, Underdog files its markets under Team Picks, where Yes and No contracts on winners, spreads, and totals are priced as percentages, the same way other prediction markets display them.
Because that naming isn't what many users expect, steer clear of unofficial sites pushing Underdog prediction codes. Claim the offer through the official Underdog app or our links so you know it's legitimate.
Trading involves risk, including total loss on positions. Trading decisions and their consequences are your sole responsibility. Nothing on underdogexchange.com constitutes a recommendation, solicitation, or offer to buy or sell any financial instrument. UDX is subject to CFTC regulatory oversight. Prices may change. Content is promotional and not a recommendation to trade. Promotion issued by affiliate. Terms apply.
How Underdog's Prediction Market Exchange Works
Underdog Predict lives in the Underdog Fantasy app itself, so a single login and wallet handle both products. Every market is framed as a Yes or No question, for example:
- Will the home team win outright?
- Will the favorite beat the spread?
- Will the combined score go over the posted total?
- Will a team clinch a playoff berth?
You aren't locking in a wager at fixed odds. You're taking a position you can hold or sell. Prices appear as percentages showing the crowd's estimate of each outcome, and they shift as people trade, so you can exit before the final whistle to bank a gain or limit a loss.
Markets fall into four main groups:
- Team Picks: Contracts on which side wins outright
- Spread Picks: Whether a team covers the posted line
- Total Points Picks: Over or under the combined final score
- Futures: Season-long outcomes such as playoff berths and titles
The bigger story is the infrastructure underneath. When Underdog launched predictions in September 2025, its contracts were supplied by Crypto.com | Derivatives North America (CDNA), the exchange covered in our Crypto.com prediction markets review. In March 2026, Underdog bought Aristotle Exchange, the company behind PredictIt, and in July 2026 it began routing trades through its own Underdog Exchange (UDX), which is registered with the CFTC as both a designated contract market and a clearinghouse. Owning that full stack is rare among app-based prediction platforms, and it gives Underdog more control over pricing, settlement, and which markets it lists.
Sports sit at the center of Underdog's lineup, but the wider industry stretches into economics, entertainment, and politics. Our complete prediction markets guide explains how the category works and which platforms serve your state, while our breakdown of sports prediction markets zeroes in on the sports side.
Event Contracts Explained: How Underdog Predict Prices Outcomes
Every market on Underdog Predict is an event contract: a Yes/No question about one specific outcome, where your position is your answer. Take "Will the Eagles win Super Bowl LXI?" You buy Yes if you think they will, or No if you think they won't.
Contracts trade anywhere from $0.01 to $0.99, and the price doubles as the market's probability. A contract priced at $0.75 means traders collectively see a 75% chance of that outcome.
How Prices Move
Prices update continuously with trading activity instead of staying fixed. Injury reports, lineup news, and in-game swings all push them around, but buying and selling pressure is ultimately what sets the number.
That movement creates opportunity. You can buy at a low price and sell higher before the game ends, or step out early when a position turns against you. Our prediction market strategies guide covers how experienced traders handle these swings.
Settlement and Payouts
When an event ends, each winning contract pays $1 and each losing contract pays $0. Your profit on a winning position works out like this:
Profit = contracts bought x ($1 - price paid per contract)
Buy 50 contracts at $0.60 and, if you're right, you collect $50 for a $20 profit. If you're wrong, the $30 you spent is gone. Our prediction market calculators can run these numbers for you, and our prediction market glossary defines every term you'll see in the app.
Who Underdog Predict Is Best For
Underdog Predict is open to anyone at least 18 (19 or 21 where a state requires it) who is located in an eligible state. It's an especially strong fit for:
- Underdog Fantasy players: Your sports knowledge carries straight over, and you never have to leave the app you already use. Our Underdog Fantasy review covers the DFS side.
- Sports bettors who want flexibility: Trading in and out of positions gives you options a locked-in parlay never will.
- Prediction market newcomers: USD funding means no crypto wallets or tokens. If you're curious about the crypto-based corner of the industry, our crypto gambling guide is a useful primer.
Still deciding between fantasy contests and event contracts? Our comparison of prediction markets vs. daily fantasy sports walks through the differences, and our social sportsbooks hub covers free-to-play and sweepstakes-style sports apps.
How to Get Started on Underdog Predict
Opening an account and placing your first trade takes just a few minutes. Here's the full process, from download to withdrawal.
Create and Verify Your Account
Download the Underdog app and register a new account with promo code GTODAYPM. You’ll provide your name, address, phone number, and SSN, and Underdog verifies your identity and location before you can trade. Prediction markets are only open in eligible states: AL, AK, AR, CA, CT, DE, DC, FL, GA, HI, ID, IA, IL, IN, KS, LA, ME, MN, MO, MT, NE, NH, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VA, VT, WA, WI, WV, WY
Fund Your Account
Add money with any of these popular payment methods:
- Debit cards: Visa, Mastercard, American Express, and Discover
- E-wallets: PayPal and Venmo
- Mobile payments: Apple Pay and Google Pay
- Bank connection: Trustly
Deposits start at $10 and post instantly, and you never need cryptocurrency to get started.
Find a Market and Buy Contracts
Open Team Picks, choose a game or future, and select Yes or No. Enter how much you want to spend, and the app shows how many contracts that buys at the current price along with your potential payout. Confirm to place the trade.
Sell Early or Hold to Settlement
There’s no need to wait for the final result. Sell when the price climbs to lock in a gain, or exit when it drops to limit the damage. If you hold until the event ends, the contract settles automatically at $1 or $0.
Withdraw Your Winnings
Cash out through any of these options:
- Debit cards
- PayPal
- Online banking
Withdrawals start at $10 and are paid in USD only. Depending on the method, expect anywhere from one or two business days up to four or five.
What You Can Trade on Underdog Predict
Underdog's market menu is built around the biggest North American leagues, including:
- NFL
- NBA
- NHL
- MLB
- College football
- College basketball
Smaller slates cover soccer, MMA, golf, and boxing, and contracts span several kinds of outcomes:
- Single-game results
- Playoff advancement
- Season-long outcomes
- Player stats
Want politics, economics, or pop culture alongside sports? Polymarket offers one of the broadest market menus in the industry, and our politics prediction markets page tracks the latest election contracts.
Underdog Predict Pros and Cons
After funding an account and trading contracts on Underdog Predict, here's where the platform shines and where it still has room to grow.
What we like:
- Its Own CFTC-Licensed Exchange | Underdog runs every trade through UDX, its own registered exchange and clearinghouse, instead of depending on a third party.
- Built for Fantasy Players | Markets live in the same app and share a balance with Underdog Fantasy, so switching between pick'em and event contracts takes seconds.
- Simple USD Funding | Debit cards, PayPal, Venmo, Apple Pay, Google Pay, and Trustly all work, with a $10 minimum and no crypto required.
What could be better:
- Availability Varies by State | Access and the size of the deposit match both depend on where you live, and several states continue to challenge sports event contracts.
- A Sports-Centric Menu | Traders who want politics, economics, or culture markets will find a much deeper selection elsewhere.
- A Learning Curve for Bettors | Percentage pricing and early exits work differently from sportsbook odds, which can trip up users arriving from traditional betting apps.
If you're coming from sportsbooks, our guide to prediction markets vs. sports betting explains exactly how the two formats differ, which helps flatten that learning curve.
Underdog Predict vs. Polymarket vs. Kalshi
Underdog competes with several regulated prediction markets for US traders, and two of the biggest are Polymarket and Kalshi. Polymarket offers one of the widest sets of real-world markets, from elections to crypto to culture, while Kalshi was the first exchange of its kind to earn a CFTC license. Underdog takes a narrower but deeper route, concentrating on sports and pairing its exchange with a fantasy app its users already know.
Here's how the three platforms compare:
| Feature | Underdog Predict | Polymarket | Kalshi |
|---|---|---|---|
| 🏛️ Regulation | Own CFTC-registered exchange and clearinghouse (UDX) | CFTC-regulated designated contract market through QCX LLC | CFTC-licensed exchange, the first of its kind in the US |
| 🎯 Market Focus | Built around sports | Politics, sports, crypto, finance, culture, and more | Politics, economics, sports, crypto, entertainment, and more |
| 💵 Funding | USD via debit card, PayPal, Venmo, Apple Pay, Google Pay, or Trustly | Mainly crypto, with Coinbase and MoonPay on-ramps | USD via bank transfer, wire, debit card, Apple Pay, Google Pay, or USDC |
| 🔁 Early Exit | Yes | Yes | Yes |
| 📱 App Experience | Shares one app and balance with Underdog Fantasy | Standalone iOS and Android apps | Standalone web and mobile platform |
| 🎁 Welcome Offer | Code GTODAYPM: Keep Your Million + 50% first-deposit match worth up to $1,000 (varies by state) | Code GTODAY: $50 trading credit | Rotating sign-up bonus |
| 📌 Best For | Sports fans and Underdog Fantasy players | Traders who want the widest mix of real-world markets | Traders who prefer USD funding across many categories |
Our recommendation depends on what you want to trade. For sports, Underdog Predict is our pick, especially if you already play Underdog Fantasy. For the broadest range of markets beyond sports, Polymarket is our pick. Our Polymarket vs. Kalshi comparison goes deeper on those two.
Prefer an exchange where traders set the prices for each other? ProphetX uses peer-to-peer matching with back and lay options, a format closer to a traditional betting exchange than Underdog's Yes/No contracts.
Underdog Predict Review: Our Final Verdict
Yes. Underdog Predict gives sports fans a better way to act on their opinions: tradeable Yes/No contracts in place of locked-in parlays, settled on Underdog's own CFTC-licensed exchange, and housed in an app that already sets the standard for fantasy sports. Availability and the deposit match vary by state, so check the table above before you sign up, but for sports-first traders, it's one of the strongest prediction markets you can use right now.
- 🏦 Its Own Regulated Exchange | UDX is registered with the CFTC as an exchange and clearinghouse, giving Underdog direct control over how its markets are priced and settled.
- 📈 Real Trading, Not Just Picks | Buy, hold, or sell before the final whistle to secure gains or trim losses, a level of flexibility no standard parlay offers.
- 📱 One App for Fantasy and Predictions | Underdog Fantasy players can move between pick'em and event contracts with the same login and the same balance.
- 💵 Easy USD Funding | Debit cards, PayPal, Venmo, Apple Pay, Google Pay, and Trustly all work, with $10 minimums and no crypto wallet needed.
- 🎁 A Welcome Offer With Two Parts | Code GTODAYPM unlocks Keep Your Million plus, in most eligible states, a 50% first-deposit match up to $1,000.
Underdog Predict earns our recommendation for anyone who wants to trade sports outcomes in a familiar, regulated app. If your interests run beyond sports, Polymarket is our top choice for broad market coverage, and Kalshi is another established option. Traders who want a peer-to-peer exchange format can also look at ProphetX.
Plus 50% First-Time Deposit Match up to $1,000 (State Dependent)
Make the Correct Prediction Pick to Score Your Payout
Spreads, Totals, Moneylines, and Parlays, all on Underdog
Plus 50% First-Time Deposit Match up to $1,000 (State Dependent)
Make the Correct Prediction Pick to Score Your Payout
Spreads, Totals, Moneylines, and Parlays, all on Underdog
How We Review Prediction Market Platforms
We evaluated Underdog Predict the same way we evaluate every prediction market: by funding a real account, buying and selling real contracts, and reading the full state-by-state terms behind the headline offer.
- Regulatory Footing | We identify who actually operates and clears the markets and confirm any CFTC registration ourselves, rather than trusting a platform's own compliance claims.
- Offer Transparency | We check how clearly a platform explains its welcome terms, including any differences by state, so readers know what to expect before signing up.
- Market Selection | We look at which categories a platform covers and how deep each one goes, since a sports specialist and a broad multi-category exchange suit different traders.
- Funding and Withdrawals | We test whether you can deposit and cash out in USD through familiar methods, or whether crypto wallets add an extra hurdle.
- Trading Tools | We confirm that positions can be sold before an event ends, and we judge how easy the app makes it to track prices and manage open trades.
- State Access | We verify which states can reach a platform's markets, since sports event contracts in particular face ongoing legal challenges in some places.
A familiar brand alone doesn't earn a recommendation. Our verdicts rest on solid regulation, clear terms, and trading tools that work well once real money is involved. For the complete methodology, see our guide to how we rate and review online gambling sites.
Underdog Predict FAQs
Quick answers to the questions readers ask most about Underdog Predict, updated for October 2026.
Yes. Underdog Predict runs on Underdog Exchange (UDX), which is registered with the CFTC. Access still depends on your location, since some states restrict sports event contracts. Prediction markets are currently available in: AL, AK, AR, CA, CT, DE, DC, FL, GA, HI, ID, IA, IL, IN, KS, LA, ME, MN, MO, MT, NE, NH, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VA, VT, WA, WI, WV, WY
Yes. New users who sign up with GTODAYPM can claim Keep Your Million, plus a 50% first-deposit match worth up to $1,000 in most eligible states. Availability and the match amount depend on where you live.
UDX is Underdog’s own prediction market exchange, launched in July 2026 after the company acquired Aristotle Exchange, the operator of PredictIt. It’s registered with the CFTC as a designated contract market and clearinghouse, so Underdog no longer has to route trades through another platform.
No. All trading happens in USD. You can deposit with debit cards, PayPal, Venmo, Apple Pay, Google Pay, or Trustly, and withdraw to a debit card, PayPal, or your bank.
Pick’em is a fantasy contest where you choose whether players will go higher or lower than projected stat lines. Underdog Predict is a market where you buy and sell Yes/No contracts on game and season outcomes, and prices move as other users trade.
Yes. You can sell any position before the event ends, either to lock in a profit when the price rises or to cut a loss when it falls. If you hold, the contract settles automatically once the result is final.
Yes. A losing contract settles at $0, so the full amount you paid for it is gone. Only spend what you’re comfortable losing, and consider selling early if a position moves against you.
You must be at least 18, or 19 or 21 in states that set a higher minimum, and physically located in an eligible state.
