What Is Polymarket?
Polymarket is the world's largest prediction market platform, allowing users to trade on the outcomes of real-world events across politics, sports, crypto, and culture — operating both an international crypto-based exchange and a smaller CFTC-regulated U.S. product.
Polymarket is the world's largest prediction market platform by trading volume, where users buy and sell contracts based on the probability of real-world events occurring. Founded in 2020 by Shayne Coplan, the platform gained mainstream attention during the 2024 U.S. presidential election and has since become one of the two dominant players in the prediction market space, alongside Kalshi.
What changed as of October 2026
- Polymarket US is a CFTC-designated exchange, not a partnership. The CFTC designated QCX LLC as a contract market on July 9, 2025; QCX now operates under the business name Polymarket US. On November 25, 2025 the CFTC amended that designation so Polymarket US can run an intermediated trading platform (customer accounts carried by futures commission merchants). CBS Sports reported on October 15, 2026 that the Polymarket US app operates in every U.S. state except Nevada, with some contracts restricted state by state.
- Kalshi overtook Polymarket in sports. Pew Research Center's analysis of data from The Block shows sports trading in June and July 2026 neared $22 billion on Polymarket (international and US combined) against more than $58 billion on Kalshi; combined monthly volume on the two platforms reached $53 billion in July 2026.
- States gained ground on sports contracts. The Ninth Circuit (August 28, 2026) and the Sixth Circuit (September 25, 2026) held that sports event contracts are likely sports bets rather than swaps, which lets states apply gaming law to them. On October 9, 2026 the CFTC proposed a rule expressly defining event contracts as swaps.
- Sportradar became a data partner. On August 27, 2026 Sportradar and Polymarket expanded their partnership to more than 20 global sports leagues and competitions.
How Polymarket Works
Users trade binary contracts priced between $0.00 and $1.00, where the price represents the market's implied probability of an event occurring. A contract priced at $0.72 means the market estimates a 72% chance the event happens.
- If the event occurs: "Yes" contracts pay $1.00
- If the event doesn't occur: "No" contracts pay $1.00
- Profit comes from buying below the final payout — buy "Yes" at $0.40 and win $1.00 for a $0.60 profit
Two Operating Models
Polymarket International:
- Crypto-native exchange operating outside the U.S.
- Users trade with USDC on the Polygon blockchain
- Pseudonymous participation — no KYC required
- Resolution via UMA's Optimistic Oracle (decentralized)
- Volume is not broken out separately in Pew's analysis, which combines Polymarket International and Polymarket US
Polymarket US (CFTC-designated exchange QCX LLC, designated July 2025; intermediated access approved November 2025):
- Regulated by the CFTC as a designated contract market
- KYC-verified U.S. participants
- Resolution by internal Markets Team
- Available in every state except Nevada as of October 2026 (CBS Sports)
Market Categories
Polymarket offers prediction contracts across:
- Politics: Elections, policy decisions, appointments, legislation
- Sports: Game outcomes, season winners, player milestones (MLB partnership signed in March 2026; Sportradar data partnership expanded August 2026)
- Crypto: Token prices, protocol events, regulatory actions
- Culture & entertainment: Awards, product launches, celebrity events
- Science & weather: Climate data, space missions, pandemic outcomes
- Geopolitics: Conflicts, treaties, international relations
Key Milestones
| Date | Event |
|---|---|
| 2020 | Founded by Shayne Coplan |
| 2022 | Settled with CFTC for $1.4M, agreed to stop serving U.S. users (international) |
| 2024 | 2024 U.S. election drove massive growth (international exchange) |
| 2025 | Intercontinental Exchange (ICE) made a growth equity investment |
| 2025 (Jul 9) | CFTC designated QCX LLC, now Polymarket US, as a contract market |
| 2025 (Nov 25) | CFTC amended the designation to allow intermediated U.S. access |
| 2026 (Jan) | Suspicious trades before Venezuela military operation raised national security concerns |
| 2026 (Mar) | Signed official MLB partnership as "prediction market partner" |
| 2026 (Aug 27) | Expanded Sportradar partnership to more than 20 sports leagues and competitions |
Why Polymarket Matters for iGaming
Polymarket has demonstrated several things that matter for iGaming operators:
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Massive consumer demand exists. Combined Kalshi and Polymarket volume of $53 billion in July 2026 alone (Pew Research Center) proves prediction markets are not a niche product. The demand is there — the question is who captures it in regulated channels.
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Sports leagues are engaging. The MLB partnership shows that major leagues see prediction markets as a distinct category from sports betting — and are willing to license data and branding to prediction market platforms.
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The regulatory gap creates opportunity. Polymarket's international exchange operates with minimal regulation and no KYC. For operators who can offer prediction market products within regulated frameworks (KYC, surveillance, responsible gambling), there's a significant differentiation opportunity.
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Anonymity is a liability. The national security controversies, insider trading incidents, and Arizona criminal charges against competitor Kalshi (blocked by a federal court since April 2026) all highlight the risks of anonymous or lightly regulated prediction markets. Operators with established compliance infrastructure are positioned as the responsible alternative.
Controversies
Polymarket has faced several controversies:
- 2022 CFTC settlement: Paid $1.4M for operating an unregistered exchange
- 2026 war market trades: Suspicious, well-timed trades before U.S. military operations raised questions about classified information leaks
- Oracle security concerns: Polymarket's ~$330M TVL versus UMA's ~$44M market cap (figures as of March 2026) creates a theoretical vulnerability where the cost of corrupting the resolution mechanism is much less than the capital at risk
- MLB partnership criticism: Some argued the deal undermined sports integrity by legitimizing a platform with limited surveillance capabilities
Competitive Landscape
| Platform | Type | Regulation | Sports volume, June–July 2026 (Pew) |
|---|---|---|---|
| Polymarket | Crypto exchange (intl) + U.S. exchange | Not CFTC-registered (intl) / CFTC DCM (Polymarket US) | nearly $22B |
| Kalshi | Traditional exchange | CFTC DCM | over $58B |
| Metaculus | Forecasting (no real money) | N/A | N/A |
| PredictIt | Political prediction market | Operator Aristotle received CFTC DCM and DCO approval in September 2025 | Not reported by Pew |
For B2B operators, understanding Polymarket's strengths (liquidity, user base) and weaknesses (regulation, anonymity, resolution risks) helps frame the opportunity for regulated prediction market products that address these gaps.
Sources
- CFTC — Amended Order of Designation, QCX LLC d/b/a Polymarket US
- CFTC — Order against Blockratize, Inc. d/b/a Polymarket, $1.4 million penalty (January 3, 2022)
- Pew Research Center — Prediction markets' trading volume doubled between May and July, largely driven by sports (September 23, 2026)
- CBS Sports — Status of Kalshi and Polymarket in all 50 states (October 15, 2026)
- Sportradar and Polymarket expand partnership (GlobeNewswire, August 27, 2026)
- Aristotle receives CFTC approval for DCM and DCO (GlobeNewswire release, September 5, 2025)
Last verified: October 16, 2026.