What Is Polymarket?

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 the dominant player in the prediction market space.

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 (majority of volume):

• 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)
• ~$20 billion notional volume in 2026

Polymarket US (launched 2024):

• CFTC-regulated through a partnership with a registered exchange
• KYC-verified U.S. participants
• Resolution by internal Markets Team
• ~$700 million notional volume in 2026

Market Categories

Polymarket offers prediction contracts across:

• Politics: Elections, policy decisions, appointments, legislation
• Sports: Game outcomes, season winners, player milestones (recently signed an MLB partnership)
• 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

Why Polymarket Matters for iGaming

Polymarket has demonstrated several things that matter for iGaming operators:

1. Massive consumer demand exists. $20B+ in annual volume proves prediction markets are not a niche product. The demand is there — the question is who captures it in regulated channels.

2. 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.

3. 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.

4. Anonymity is a liability. The national security controversies, insider trading incidents, and Arizona criminal charges against competitor Kalshi 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 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

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.

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Last verified: March 2026