In October 2025, Polymarket’s monthly trading volume surpassed $3 billion, with its user base soaring 93.7% from the previous month. These staggering figures highlight the prediction market’s remarkable transformation—from a fringe experiment in the crypto world to a core component of mainstream financial infrastructure.
Capital is pouring into this sector at an unprecedented pace. Polymarket’s valuation, driven by investor enthusiasm, is climbing toward a new high of $12 to $15 billion. Its competitor, Kalshi, has also seen its valuation break the $10 billion mark.
Market Transformation
Prediction markets are undergoing a fundamental identity shift. Once seen as a speculative tool within the crypto community, this emerging sector achieved three major breakthroughs in 2025: regulatory easing, a flood of capital, and integration by tech giants. In May 2025, the U.S. Commodity Futures Trading Commission (CFTC) withdrew its lawsuit against Kalshi, acknowledging that prediction contracts could be legally traded within specific frameworks. Four months later, the CFTC issued a "no-action letter" to Polymarket, paving the way for its return to the U.S. market.
Clearer regulations have removed the biggest barrier to capital inflows. Traditional financial powerhouses are now making significant bets on this new sector. Intercontinental Exchange (ICE), the parent company of the New York Stock Exchange, announced a $2 billion investment for a 25% stake in Polymarket. At the same time, technology platforms began integrating prediction market data into mainstream information channels. In October 2025, Google announced it would incorporate real-time prediction data from Polymarket and Kalshi into Google Finance search results.
Now, when users search for queries like "Who will be president in 2028?" or "Probability of a Fed rate cut," they’ll see real-time prediction market charts directly below the results. Prediction markets have evolved from niche tools for crypto enthusiasts to data products visible to everyday users and cited by the media.
Controversies and Flaws: The Gap Between Ideal and Reality
Despite the boom, debates over the authenticity and societal value of prediction market data have never ceased. In 2025, a Columbia University study suggested that roughly 25% of Polymarket’s trading volume could be wash trading. During high-profile events—such as U.S. elections or major sports finals—this figure spiked to as much as 60%. While industry experts have differing views on the study’s methodology, it does highlight potential issues lurking beneath the market’s exuberant surface.
Ethereum founder Vitalik Buterin has offered deeper insights into prediction markets. Commenting on a market manipulation incident, he noted, "Only decentralized oracles are a natural defense against these problems." He recommends that prediction markets avoid relying on a single data source, instead aggregating multiple independent sources and adopting a "2-of-3" multi-signature resolution mechanism. This means that settling an event requires consensus from at least two independent data providers, significantly reducing the risk of single-point manipulation.
However, the reality of prediction market operations often falls short of this ideal. Most platforms still rely heavily on capital subsidies to maintain liquidity—essentially following the "burn money to acquire users" playbook common in Silicon Valley. Market makers typically provide liquidity only for sports and political markets with abundant historical data, while markets that truly rely on private knowledge often see little to no liquidity.
The Capital Wave: Major Bets and Soaring Valuations
The capital frenzy around prediction markets peaked in the second half of 2025. Both Polymarket and Kalshi secured massive investments and saw their valuations skyrocket in a short period. After ICE’s $2 billion investment, Polymarket’s valuation surged to $8 billion. According to the latest reports from Bloomberg, the company is now seeking a new funding round at an even higher valuation of $12 to $15 billion.
Meanwhile, Kalshi reached a $5 billion valuation in a funding round led by a16z and Sequoia Capital, and soon after crossed the $10 billion threshold. Traditional finance giant CME Group also announced plans to launch financial contracts tied to sports events and economic indicators by the end of 2025, setting the stage for direct competition with these emerging platforms. This wave of capital is underpinned by significant growth in user activity and market engagement. On January 19, 2025, Polymarket’s daily active wallets peaked at over 72,600. While activity has since moderated, the platform remains robust, processing over $1 billion in transactions that month and surpassing $15.7 billion in cumulative trading volume.
Expansion Strategy: Compliance and Full-Market Coverage
In January 2026, Coinbase partnered with Kalshi to launch prediction markets across all 50 U.S. states, expanding its product lineup. This move signaled that prediction markets had become part of the mainstream crypto trading platform ecosystem. Industry analysts note that prediction markets are rapidly broadening their scope, "from sports and politics to macroeconomics." Polymarket has adopted a "sports first, everything next" expansion strategy, initially focusing on sports contracts before adding markets on virtually anything.
On the international version, users can already trade on questions like whether the U.S. Secretary of Defense will resign by a certain date or what the closing price of gold will be in 2025. This expansion reflects a keen awareness of shifting market demand. Prediction markets distill complex probability forecasts into simple, intuitive data points—such as "Candidate X has an 87% chance of winning"—using language that anyone can understand, which is key to their appeal.
Market data shows that, although Polymarket’s total value locked (TVL) has declined from a peak of $512 million during the U.S. election season to around $194 million, it’s still up 2,325% from $8 million a year ago.
The Battle for Sports IP: Top Leagues as the New Battleground
Sports IP has become the central arena for prediction market platforms. On January 27, 2026, Soccer United Marketing, the commercial arm of Major League Soccer (MLS), announced a multi-year partnership with Polymarket.
Under the agreement, Polymarket will serve as the official exclusive prediction market partner for the MLS regular season, All-Star Game, cup finals, and the Leagues Cup. The battle for sports IP began as early as 2025. In October last year, the National Hockey League signed multi-year licensing deals with both Kalshi and Polymarket. The following month, Polymarket also became the official exclusive prediction market partner of the Ultimate Fighting Championship (UFC).
The data underscores the importance of sports to prediction platforms. On Kalshi, over 90% of betting volume comes from sports events; on Polymarket, the figure is 43%. Sports events have become the primary traffic driver for these prediction market platforms.
Innovation Frontier: AI Integration and Ecosystem Development
Innovation in prediction markets goes far beyond expanding tradable assets. In 2026, the integration of AI and prediction markets is set to become a major industry trend. According to industry forecasts, AI agents will become key participants in prediction markets, accounting for more than 30% of trading volume. These AI agents won’t just be short-term speculators—they’ll act as primary liquidity providers by continuously calibrating and responding with low latency.
Prediction markets themselves are also evolving into an "external reality-check layer" for AI systems. Capital-weighted market probabilities can serve as external anchors, helping correct AI bias and hallucination issues. An interesting trend is that "judgments that cannot be wagered on in prediction markets" may be automatically downgraded by AI systems, offering a new approach to improving the reliability of AI outputs.
On the ecosystem front, innovation is accelerating. In January 2026, Pump.fun’s investment division launched a "Build in Public" hackathon, offering a $3 million prize pool to fund 12 high-quality projects. The competition uses user markets as the core evaluation mechanism, emphasizing real-world value and market appeal.
Crypto Market Linkages: The Interplay Between Prediction and Price Discovery
Prediction markets and the cryptocurrency market are becoming increasingly interconnected. Some prediction platforms now offer contracts directly linked to crypto prices, such as "Bitcoin price range in 2026" and similar products.
For example, according to Gate market data, as of January 29, 2026, Bitcoin was trading at $88,185.2, with a market capitalization of $1.76 trillion and a market dominance of 56.29%.
Notably, "state-level" markets offered by prediction platforms—those that continuously price the state of the world rather than single event outcomes—may provide an additional layer of signals for crypto investors. This shift from "event-level" to "state-level" markets enables prediction platforms to deliver more continuous and structured consensus aggregation.
As prediction market data becomes widely disseminated and cited by mainstream media, the probabilities generated by these markets could, in turn, influence sentiment and decision-making in the crypto market, creating a complex web of interactions.
Sports IP has emerged as the core battleground for prediction markets, with over 90% of Kalshi’s betting volume concentrated in sports events and Polymarket reaching 43%. As the NHL, UFC, and MLS all strike deals with prediction platforms, mainstream sports leagues are fully embracing this emerging sector. From stadiums to financial terminals, prediction market data flows have been integrated into Google Finance and Bloomberg Terminals, becoming reference points for institutional decision-making. And with AI agents expected to contribute more than 30% of trading volume, this market is evolving from a purely human contest into an intelligent ecosystem of human-machine collaboration.
