Counter-Strike 2 Dominates Esports Betting Markets With 57% of June Volume

Counter-Strike 2 isn't just the biggest esport to watch. It's the biggest to bet on.

New data from Kalshi shows CS2 commanded 57% of all esports prediction market volume in June 2026. The total market hit $231.8 million for the month.

That's not a typo. Nearly $132 million in prediction market activity went toward Counter-Strike alone.

IEM Cologne Was the Main Event

The numbers make sense when you look at the calendar. IEM Cologne ran in June, and its grand final was the single biggest match of the month across all esports.

Cologne has always been a fan favorite. The Cathedral of Counter-Strike lives up to its name. Big crowds. Big stakes. Big money flowing through prediction markets.

What This Means for Esports

Prediction markets are a new way to measure what fans actually care about. It's one thing to watch. It's another to put money on it.

CS2 is proving it has both. The game launched in 2023 and has only grown since. Valve's hands-off approach to esports lets third-party organizers like ESL build massive events. The model works.

Other games split the remaining 43% of volume. That's still over $99 million, but CS2 is in a league of its own right now.

June's numbers show where competitive gaming's core audience lives. And they're watching Counter-Strike.