Kalshi has taken the lead in several key segments of the prediction market, while Polymarket has maintained its dominance in political contracts. According to CryptoRank, the biggest prediction market platforms are increasingly moving away from competing for the entire market and are instead carving out leading positions in specific segments.
The shift is also reflected in liquidity distribution. By the end of June, total open interest across prediction market platforms had climbed to $1.8B, up about 54% month over month. Kalshi now leads in total open interest, although Polymarket remains one of the market's largest players.
How the Market Is Divided
Kalshi has become the largest platform for cryptocurrency and sports prediction markets. It also leads in weekly trading volume. Excluding World Cup contracts, the platform accounts for more than 80% of weekly trading activity.
Polymarket continues to dominate political prediction markets, which still account for the majority of its trading activity.
The Sector Attracted New Users and Capital
Analysts noted that the 2026 FIFA World Cup significantly boosted activity across prediction market platforms. After the tournament began, average daily trading volume increased by about 75%, while sports-related contracts attracted new users.
Interest from venture capital firms also remains strong. According to CryptoRank, prediction market projects raised around $1.85B in funding during the first half of 2026, more than any other category in the crypto market. The sector accounted for about one-quarter of all capital invested across the industry's ten largest segments.