Polymarket Hits $1 Billion Revenue Milestone Amid Fierce US Legal Battles

The world of prediction markets is currently experiencing an unprecedented gold rush, overshadowed by a gathering legal storm. Polymarket, which saw negligible revenue at the start of 2026, has transformed into a giant with a one-billion-dollar revenue run rate in just six months. This growth was primarily fueled by lifting the U.S. waitlist in May 2026 and a surge in taker fees that were virtually non-existent before January 2026. While investors are queuing up to value the company at over $20 billion, massive resistance is forming on a different front.

A total of 20 U.S. states are locked in active litigation with platforms like Polymarket and its competitor Kalshi. The core accusation is serious: the sports event contracts offered are deemed nothing more than illegal gambling under state law. Particularly explosive is a letter signed by 44 state attorneys general. They deny federal agencies sole jurisdiction and demand the right to regulate these platforms under local casino laws. This challenges the entire business model, which has so far relied on centralized regulation as a financial product by the Commodity Futures Trading Commission (CFTC).

Numbers and facts

The economic momentum is breathtaking. In October 2025, Intercontinental Exchange (ICE) took a $2 billion stake in Polymarket, which at the time implied a valuation of $9 billion. By March 2026, this valuation had already jumped to $15 billion. Currently, reports indicate the company is negotiating a further funding round of $1 billion at a valuation exceeding $20 billion. Competitor Kalshi was valued at $22 billion in May and is pursuing a $40 billion valuation.

In contrast, estimates from the Tax Foundation suggest that states are losing approximately $2 billion in annual tax revenue due to the lack of gambling regulation. To legitimize the market, Polymarket has secured exclusive partnerships. A deal with Major League Baseball (MLB) is estimated at $150 million to $300 million over three years. Additionally, the platform secured rights for 20,000 ATP tennis matches per season. Sportradar is also on board as a data provider, now covering 300,000 matches per year across more than 20 leagues, including the German Bundesliga.

Background

The conflict reached a preliminary peak on August 28, 2026. A three-judge panel of the Ninth Circuit Court of Appeals ruled unanimously that states can regulate prediction markets as gambling. The judges, all appointed during the Trump administration, stated unequivocally that the substance of sports event contracts is sports gambling. In doing so, they contradicted an earlier ruling by the Third Circuit Court, making a Supreme Court case almost inevitable.

Meanwhile, the CFTC, under Chairman Michael Selig, is attempting to defend its exclusive authority. Selig described prediction markets as the next crypto and emphasized the need for a federal framework. The agency has already sued nine states to prevent their intervention. At the same time, pressure regarding market integrity is mounting.

„The substance of the sports event contracts offered on Kalshi’s exchange is sports gambling.“ - Ninth Circuit Court of Appeals ruling, August 28, 2026

A Bloomberg analysis revealed that in the first half of 2026 alone, around $200 million in trading volume on Polymarket showed signs of insider trading. This particularly affected geopolitical bets on events in Iran or Venezuela. Polymarket responded by handing over 100 wallet addresses to law enforcement authorities.

Why it matters for German players

For German players, the situation regarding prediction markets like Polymarket is highly complex. In Germany, gambling is subject to the strict State Treaty on Gambling 2021 (GlüStV 2021). Platforms offering bets on sports events or other future events require a license from the Gemeinsame Glücksspielbehörde der Länder (GGL). Currently, such crypto-based prediction markets are not found on the official GGL whitelist. This means that participating in such markets from Germany can be legally classified as participating in illegal gambling.

Furthermore, these platforms lack German player protection measures. There is no cross-provider deposit limit of 1,000 euros per month via the LUGAS system and no connection to the OASIS blocklist. The stake limit of one euro per spin for slots or similar restrictions do not exist there either. Since Polymarket offers contracts that sometimes last only five minutes, the addiction potential is comparable to high-frequency casino games, which is a major concern for German regulators.

What it means for GGL-licensed casinos

Licensed German operators view these platforms as unfair competition. While GGL casinos must pay high taxes and fulfill strict player protection requirements, prediction markets often operate in a legal gray area without these cost burdens. The case in the USA shows that the established gambling industry is lobbying heavily to hold these new competitors accountable. German providers can point out that only casinos listed on the whitelist guarantee safety and legality. If the trend towards prediction markets continues in Europe, the GGL will likely react just as strictly as the US attorneys general to protect the channeled market.