The European Securities and Markets Authority (ESMA) has recently turned its attention to two high‑profile prediction‑market platforms, Polymarket and Kalshi, as they seek to expand their services within the European Union. In a series of statements and preliminary assessments, the regulator has raised serious questions about whether the types of contracts offered by these platforms fall under existing EU prohibitions on binary options, the newly‑adopted Markets in Crypto‑Assets (MiCA) framework, or even national gambling statutes.
The core of ESMA’s concern is that the current authorisation regime may contain gaps that could allow unregulated or insufficiently supervised activity to take place, potentially exposing retail investors to undue risk. **Background on the platforms** Polymarket and Kalshi operate on a model that allows users to place bets on the outcome of real‑world events, ranging from political elections to economic indicators. While these platforms market themselves as "prediction markets" rather than traditional gambling sites, the line between speculative betting and gambling can be blurry, especially when the contracts are binary in nature—paying a fixed amount if a specific outcome occurs and nothing otherwise. This structure mirrors the characteristics of binary options, a class of financial instruments that the EU has largely prohibited for retail investors due to their high risk and lack of transparency.
**ESMA’s regulatory lens** ESMA’s analysis focuses on three main regulatory pillars: 1. **EU Binary‑Options Ban** – In 2018, the European Commission introduced a ban on the marketing, distribution, and sale of binary options to retail clients, citing their propensity for loss and the difficulty for investors to understand the underlying risk. The ban specifically targets contracts that offer a fixed payout based on a yes/no outcome.
ESMA is now assessing whether the event contracts offered by Polymarket and Kalshi meet the definition of a binary option under this legislation. 2. **MiCA (Markets in Crypto‑Assets)** – The MiCA regulation, which came into force in early 2024, creates a comprehensive framework for crypto‑asset service providers, covering everything from stablecoins to utility tokens. Although MiCA primarily addresses tokenised assets, its broad language also captures “financial instruments that are not otherwise regulated” and could therefore apply to prediction‑market contracts that are tokenised or settled on blockchain networks.
ESMA is evaluating whether these contracts should be classified as crypto‑assets and, if so, whether the platforms would need to obtain a MiCA licence and comply with its consumer‑protection requirements. 3.
**National Gambling Laws** – Each EU member state retains its own gambling legislation, which can vary significantly in terms of licensing, taxation, and consumer safeguards. If the contracts are deemed to be a form of gambling rather than a financial product, the platforms would have to seek gambling licences in each jurisdiction where they operate. This creates a complex compliance landscape, and ESMA warns that the current EU‑wide authorisation system does not provide a clear pathway for such cross‑border services. **Potential gaps in authorisation** ESMA’s warning centres on the observation that the EU’s existing regulatory architecture may not fully address the hybrid nature of prediction‑market contracts.
On the one hand, they share characteristics with financial derivatives; on the other, they resemble gambling products. The regulator notes that the binary‑options ban was drafted before the rise of blockchain‑based prediction markets, and MiCA, while forward‑looking, does not explicitly mention event‑based contracts.
Consequently, there is a risk that platforms could operate in a regulatory grey zone, obtaining a licence under one regime while inadvertently breaching another. **Implications for market participants** For investors and users, the uncertainty surrounding the regulatory status of Polymarket and Kalshi could translate into several practical consequences: - **Consumer protection** – Without a clear supervisory framework, users may lack access to dispute‑resolution mechanisms, capital‑preservation safeguards, or clear information on fees and risks. - **Market integrity** – Unregulated platforms could be vulnerable to manipulation, insider information, or fraudulent activity, undermining confidence in the broader EU financial ecosystem.
- **Cross‑border access** – Companies may be forced to limit their services to a subset of EU countries where they can secure the appropriate licences, reducing the potential for a single, unified European market for prediction‑based contracts. **Regulatory next steps** ESMA has indicated that it will continue its dialogue with both Polymarket and Kalshi, as well as with national competent authorities, to clarify the applicable legal framework. The regulator may issue guidance documents, propose amendments to existing legislation, or work with the European Commission to develop a dedicated regime for event‑based contracts. In the meantime, the authority is urging platforms to conduct thorough legal assessments, implement robust AML/KYC procedures, and adopt best‑practice risk‑management controls.
**Industry response** Both Polymarket and Kalshi have publicly expressed a willingness to cooperate with regulators and to adapt their business models if required. They argue that their platforms provide valuable information‑aggregation services, contributing to market efficiency by allowing participants to hedge against real‑world uncertainties.
Nonetheless, they acknowledge that compliance with EU rules is essential for sustainable growth and for gaining the trust of European users. **Conclusion** The scrutiny from ESMA highlights a broader challenge for the EU: how to regulate innovative, technology‑driven financial products that do not fit neatly into existing categories. As prediction‑market platforms continue to evolve and attract a growing user base, policymakers will need to strike a balance between fostering innovation and protecting consumers. Until a clear regulatory pathway is established, platforms like Polymarket and Kalshi must navigate a complex web of binary‑options bans, crypto‑asset regulations, and national gambling laws, ensuring that they do not fall through the cracks of the current authorisation system.