From $500M to $24 Billion a Month: How Prediction Markets Became a Serious Financial Asset Class

Combined monthly trading volume on Kalshi and Polymarket has risen from under $5 billion in September 2025 to approximately $24 billion in April 2026. Research firm Eilers & Krejcik projects $1 trillion in annual volume by 2030.

Three Forces Behind the Acceleration

Institutional legitimacy arrived in October 2025, when ICE/NYSE announced a strategic investment of up to $2 billion in Polymarket at an $8 billion valuation. Regulatory resolution followed in January 2026, when the CFTC withdrew restrictive proposed rules and issued a no-action letter for Polymarket. And product expansion — from elections to sports to economic markets — created compounding network effects.

The Platforms: A $20 Billion Industry

Kalshi is reportedly valued at $11 billion. Polymarket at $9 billion. Combined, these two platforms represent a $20 billion industry built in under a decade. Kalshi operates as a CFTC-regulated Designated Contract Market; Polymarket operates offshore with a crypto settlement layer. Both are winning. The market is large enough for both to grow simultaneously.

What Comes After $1 Trillion

If the projection materializes, prediction markets will rank among the largest retail financial markets in the world. The convergence with traditional financial markets suggests the category won't be classified as a "prediction market" for long. It will simply be called markets.