ESMA flags prediction markets over manipulation risks

TLDR

Europes securities regulator is publicly warning that prediction markets, especially crypto-settled ones, pose serious insider trading and manipulation risks and mostly operate outside EU authorization.

1. ESMAs latest risk monitor labels prediction markets rife with inside trading, citing concrete cases of suspicious profits and data tampering.
2. Major platforms like Polymarket and Kalshi reportedly lack the EU licenses normally required to sell event contracts, with some countries already blocking access.
3. Crypto users should expect tighter EU scrutiny, with MiFID II, MiCA, and gambling rules shaping how, or if, prediction markets can legally operate in Europe.

Deep Dive

1. What ESMA Is Warning About

In its September 2026 risk monitoring report, the European Securities and Markets Authority (ESMA) gave prediction markets their own chapter and described them as rife with inside trading, manipulation and retail harm.Finance Yahoo summary details several examples, including wallets that made about $1.2 million on Iran-related contracts shortly before strikes and a U.S. Army master sergeant charged after earning over $400,000 on Polymarket.

ESMA also highlighted suspected tampering with weather sensors used to settle Polymarket contracts, which led Frances meteorological agency to file a police complaint.Decrypts coverage notes that platform responses are mostly reactive, coming only after profits have been taken.

2. Legal Status Of Crypto Prediction Platforms In The EU

ESMA explains that event contracts can fall under three regimes:

1. Financial instruments under MiFID II, often treated as derivatives subject to the EUs binary options ban for retail investors.
2. Crypto assets under MiCA when contracts are tokenized but not MiFID instruments.
3. Gambling products under national law.CryptoBriefings analysis underscores that there are currently no licensed prediction market operators in the EU.

A separate ESMA report says large platforms such as Polymarket and Kalshi do not hold the EU authorization generally required to market and sell event contracts, and questions the effectiveness of partial geo-blocks and VPN bans.The Blocks summary notes that France and Spain have already moved to block access at the ISP or DNS level.

3. Why It Matters For Crypto And What To Watch

ESMA links prediction markets to the broader trend of growing ties between crypto and traditional finance, warning that these links could help transmit shocks across the system.Cointelegraphs report and Crypto.news both highlight rising volumes, with Q4 2025 prediction market trading at roughly $12 billion on Polymarket and $8.8 billion on Kalshi.

Next, watch for:

1. How MiCA and MiFID II are applied to crypto-settled event contracts and whether any EU-wide licensing path emerges.
2. National actions, such as more website blocks or gambling-style enforcement.
3. Whether DeFi-style on-chain prediction protocols are explicitly pulled into these regimes or remain in a legal gray area.

Conclusion

ESMAs warnings turn prediction markets from a niche curiosity into a recognized regulatory risk area, especially where crypto settlement and pseudonymous trading make manipulation harder to detect.

For crypto users, the key takeaway is that European authorities are tightening their focus on event-linked contracts, and future rules or enforcement could reshape access, liquidity, and even the viability of some prediction platforms in the EU.