Prediction markets recorded $44.8 billion in combined monthly trading volume in June 2026, a 75% increase from May's $25.66 billion, driven primarily by the FIFA World Cup. That figure exceeds the roughly $14 billion wagered monthly through all legal U.S. sportsbooks in 2025, according to Pew Res...
"Event contracts could become a trillion-dollar market." — Philippe Laffont, Founder, Coatue Management
Prediction markets recorded $44.8 billion in combined monthly trading volume in June 2026, a 75% increase from May's $25.66 billion, driven primarily by the FIFA World Cup. That figure exceeds the roughly $14 billion wagered monthly through all legal U.S. sportsbooks in 2025, according to Pew Research Center data. Year-to-date cumulative volume has surpassed $130 billion, up from $50 billion for all of 2025.
The asset class has attracted capital commitments that would have been unthinkable two years ago. Intercontinental Exchange, which operates the New York Stock Exchange, completed a $2 billion investment in Polymarket. Kalshi closed a $1 billion Series F in May 2026 at a $22 billion valuation and is now seeking to raise additional capital at a $40 billion valuation. Cboe Global Markets launched its own prediction suite on June 23. Meta is building a standalone prediction app codenamed "Arena." The institutional land grab is underway, but so is a regulatory collision between federal and state authorities that may reach the Supreme Court.
Monthly prediction market volume grew from less than $1 billion in June 2024 to approximately $24 billion in April 2026, according to CFTC filings and TRM Labs analysis. The trajectory accelerated through June:
| Month | Combined Volume | Change | |-------|----------------|--------| | September 2025 | ~$5B | — | | January 2026 | ~$20B | +300% from Sep | | April 2026 | ~$24B | +20% from Jan | | May 2026 | $25.66B | +7% | | June 2026 | $44.8B | +75% |
The June spike is attributable to the 2026 FIFA World Cup, which kicked off June 11. Polymarket's World Cup Winner markets alone accumulated over $1.8 billion in trading volume. Kalshi's FIFA markets drew over $832 million in bets. France and Spain traded as co-favorites, with the France winner market attracting $40.9 million and Spain $33.6 million in individual-nation volume, according to The Defiant.
User growth has tracked alongside volume. TRM Labs reported unique wallets interacting with prediction markets more than tripled to 840,000 in the six months through February 2026. Mid-frequency traders (11–1,000 fills) and high-frequency market makers account for roughly 80% of volume, while casual participants remain a modest share.
The prediction market sector has fractured into three distinct architectural models, each with different regulatory and infrastructure implications.
Model 1: Regulated Exchange (Kalshi) Kalshi operates as a CFTC-regulated designated contract market. It runs a centralized order book, holds customer funds, and settles trades internally. In June 2026, Kalshi processed $21.1 billion in volume, commanding 47% of the combined market. Kalshi beat the CFTC in court in 2024 to list election contracts and now offers sports, politics, economics, and weather markets. It employs a maker-taker fee model with taker fees peaking at approximately 1.75 cents per contract at the 50-cent price point.
Model 2: Hybrid Onchain/Offchain (Polymarket) Polymarket combines an off-chain Central Limit Order Book (CLOB) managed by a centralized operator with on-chain settlement on the Polygon network. Shares are represented as ERC-1155 tokens using the Gnosis Conditional Token Framework, with collateral denominated in USDC. Market resolution relies on UMA's Optimistic Oracle, which assumes proposed outcomes are truthful unless challenged within a two-hour window via a $750 USDC bond. Polymarket's main non-U.S. platform processed $10.26 billion in June, up 45% from May. Polymarket US added $3.04 billion. Combined Polymarket volume in June: $13.3 billion.
Model 3: Fully Onchain Protocol (World) World launched July 1, 2026, as a non-custodial prediction protocol on Solana, embedded inside Phantom wallet (approximately 20 million users). World does not hold user funds, does not operate markets directly, and routes orders to liquidity providers on Solana. Settlement runs through Chainlink Data Streams, and winning positions redeem automatically in CASH, a Solana stablecoin. The protocol plans to expand into sports, politics, and macro markets through July.
The capital flowing into prediction market infrastructure in 2026 has reached a scale typically associated with exchange acquisitions, not startup funding rounds.
Intercontinental Exchange → Polymarket: $2 billion. ICE completed a $2 billion total commitment in Polymarket (initial $1 billion in October 2025, additional $600 million in March 2026) at an approximately $8 billion pre-investment valuation. The stated thesis is financial data infrastructure: ICE became the exclusive global distributor of Polymarket's event-driven data to institutional capital markets. In February 2026, ICE launched the Polymarket Signals and Sentiment tool, delivering crowd-sourced probability assessments as structured data feeds for institutional traders.
Kalshi: $1 billion Series F, $40 billion target. Kalshi raised more than $1 billion in May 2026 at a $22 billion valuation in a round led by Coatue Management, with participation from Sequoia Capital, Andreessen Horowitz, Morgan Stanley, and ARK Invest. Seven weeks later, Kalshi entered talks for an additional round at approximately $40 billion, according to CoinDesk. Total equity raised since inception would reach approximately $3.7 billion. An IPO is being discussed but is unlikely before 2027.
Cboe Global Markets: Cboe Predicts. On June 23, 2026, Cboe launched the first products in its prediction markets suite. Initial products are binary option contracts based on the Mini-S&P 500 Index (XSP), available through Interactive Brokers and expected at Charles Schwab in coming months. Cboe has also petitioned the SEC to approve earnings-based event contracts covering 100 KPIs across 23 companies including Apple, Tesla, SpaceX, Coinbase, and Robinhood.
Meta: Arena (in development). Meta CEO Mark Zuckerberg instructed a team to build a standalone prediction app codenamed "Antwerp" / "FBForecast," according to NPR and Forbes. The app will initially use play-money currency with possible real-money functionality later. Meta's Llama language model will auto-generate questions from trending topics and resolve markets. Meta previously ran a similar app called Forecast (2020–2022) that failed to gain traction.
Revenue generation reveals the economic substance beneath the volume numbers.
In May 2026, Kalshi collected $137.86 million in trading fees, compared with Polymarket's $28.07 million — nearly a five-to-one revenue gap despite a roughly two-to-one volume difference, according to DeFi Rate. Kalshi's higher fee capture reflects its regulated exchange model and higher effective fee rates.
Kalshi's annualized revenue in 2026 is approximately $2 billion, placing its $40 billion target valuation at a 20x revenue multiple. For context, CME Group trades at approximately 18x trailing revenue, and Coinbase at approximately 12x.
Polymarket's fee structure, introduced March 30, 2026, uses probability-based taker fees: peak effective rates of 0.75% for sports, 1.00% for finance and politics, and up to 1.80% for crypto markets. Geopolitical and world events markets carry zero fees.
World has not disclosed its fee model.
The prediction market sector demonstrates a practical application of blockchain infrastructure that generates measurable economic value — not through token speculation, but through settlement, custody, and data transparency.
Polymarket's Polygon layer provides three specific functions: (1) collateral custody in USDC smart contracts rather than platform-controlled accounts; (2) tokenized positions (ERC-1155) that users can hold, transfer, or trade independently of the platform; and (3) oracle-based resolution through UMA that operates without relying on a single operator's judgment. In March 2026, Polymarket transitioned to native USDC issued by Circle's regulated affiliates, redeemable 1:1 for U.S. dollars.
World's Solana layer goes further, routing orders to onchain liquidity providers and settling through Chainlink oracles without the protocol holding user funds. Phantom's 20-million-user distribution channel means the protocol inherits an existing wallet base rather than requiring separate onboarding.
Kalshi and Cboe operate without blockchain settlement. Their value proposition is regulatory clarity and integration with existing brokerage infrastructure.
TRM Labs flagged a market integrity concern specific to the onchain model: analysis of wallet behavior revealed synchronized wallet creation, shared funding sources, and identical exit patterns concentrated in geopolitical markets. The findings do not prove manipulation but demonstrate that onchain data can surface anomalies that traditional exchanges would need internal surveillance to detect.
The regulatory environment is fracturing along federal-state lines, creating material legal risk for all participants.
Federal position: The CFTC characterizes event contracts as "swaps" — derivatives products under exclusive federal jurisdiction. On June 10, 2026, the CFTC issued a Notice of Proposed Rulemaking that would allow sports event contracts including final scores, point differentials, and season-long performance metrics. The proposal would prohibit contracts based on player injuries, officiating decisions, in-game actions, and pre-collegiate sports. Comments close July 27, 2026.
State pushback: More than a dozen states have taken legal action against prediction platforms. Kentucky's Attorney General sued Kalshi and Polymarket for offering illegal gambling. Minnesota became the first state to ban prediction market platforms outright when Governor Tim Walz signed the prohibition into law. The Trump administration responded by suing Illinois, Connecticut, and Arizona, arguing federal preemption.
Legal trajectory: The federal-state jurisdictional conflict may reach the Supreme Court as early as 2027, according to legal experts cited by CBS News. The outcome will determine whether prediction markets operate under CFTC derivatives regulation or state gambling commissions — a distinction with existential implications for the sector's capital structure, fee models, and geographic reach.
Prediction markets in mid-2026 resemble the exchange industry circa 2005: multiple incompatible architectures competing simultaneously, regulatory frameworks under construction, and institutional capital flowing in before the rules are settled. The $44.8 billion June volume figure is not a speculative metric — it represents cleared trades on regulated and semi-regulated platforms, denominated in U.S. dollars and USDC.
The blockchain component of this market is worth examining without overstatement. Polymarket's Polygon settlement and World's Solana infrastructure provide genuine functional advantages — user-custodied positions, oracle-based resolution, onchain auditability — but Kalshi's regulated centralized model generates five times the revenue per dollar of volume. The market has not yet determined whether decentralized settlement is a competitive advantage or an architectural curiosity.
What the data shows clearly: prediction markets have moved from a niche crypto experiment to a capital markets category attracting NYSE operators, $40 billion valuations, and federal rulemaking. The resolution of the CFTC-versus-states jurisdictional question will shape whether this becomes a unified national market or a fragmented patchwork — and whether blockchain settlement remains a structural feature or gets regulated away.