Kalshi’s June Esports data shows $231.8M market dominated by Counter-Strike
Kalshi sports markets traded $231.8 million on 4.05 million individual trades June 2026, spread over 28 different series covering seven titles. At the risk of sounding like I’m flogging a dead horse, the $231.8 million in trades is disproportionate to the amount at stake, such is the nature of prediction markets.
The most interesting thing is this: 57 percent of it, $132.1 million, was a small collection of Counter-Strike 2 markets, and a good part of that passed one week in the middle of the month, when IEM Cologne was live. I previously broke down Kalshi’s data for IEM Cologne here.
Kalshi Esports · June 2026
The month in four numbers
Total Contracts
231.80M
231,796,650
Total Trade
4.05M
4,047,758 fills
Active Series
28
unique sports markets
Dates Followed
30
2026-06-01 → 2026-06-30
CS2 absolutely rules in June
There is a clear market leader in what people trade in June, and the answer is clearly Counter-Strike. 59% of all esports contracts sold in Kalshi in June 2026 were for Counter-Strike 2. These were almost entirely single game bets (made on the game winner, map winner and overall map markets), and a small slice of the tournament market.
No other title broke 12% of the month’s volume, and the absolute dominance was declared especially at IEM Cologne in the third week.
Top Series – Full Moon
2026-06-01 → 2026-06-30 · calculated by sold contracts · CS2 markets for game/map/number of maps/skills merged into one line “Same Bet”; The winner of the CS2 Tournament (direct futures market) is always different
#
Series
Contracts
Commercial
% Mo.
01
CS2 Single Game Betting
CS2
132.13M
2.12M
57.0%
02
League of Legends game
League of Legends
26.80M
353.1K
11.6%
03
Clever game winner
A hero
20.14M
429.2K
8.7%
04
League of Legends Map Winner
League of Legends
12.65M
201.3K
5.5%
06
Call of Duty Games
Call of Duty
7.28M
180.1K
3.1%
07
Winner Map Hero
A hero
5.91M
121.5K
2.5%
09
CS2 Tournament Winner
CS2
3.51M
30.8K
1.5%
11
COD Map Winner
Call of Duty
2.12M
54.0K
0.9%
12
League of Legends Total Maps
League of Legends
1.74M
42.8K
0.8%
League of Legends Game Winner was a distant second at 11.6% for the month ($26.8 million), while Valorant’s game winning market was close behind at 8.7% ($20.1 million). Among them, CS2 single game betting, LoL game market and Valorant game market made up 77% of everything sold on the Kalshi sports board in June. It goes to show that when there is a big Counter-Strike event, it swallows up the competition. Whether that changes in July with MSI’s LoL event remains to be seen.
Monthly contract Volume share, per game
What is “57%” actually made of
It is worth breaking such a large number. CS2, broadly speaking, is not just one market in Kalshi. It can be divided into five. This is whether the team wins the game; or wins a given map; whether the game is over or under the line of perfect maps; whether the team qualifies for the next stage of the competition; and, separately, who wins every event outright. About four-fifths of CS2’s monthly volume, $103.8 million, sits in the single “win game” market alone. Markets that won the map added another 20% ($26.9 million).
Inside CS2’s 135.65M Contracts
how CS2 volume breaks down across its five markets
Single Match Betting vs. Competition Directly
Single Match Betting
Tournament Winner (outright)
Inside Single Match Betting
The IEM Cologne effect, at a more granular level
The tournament comfortably produced all of the top ten major markets, and to steal the table I made for the analysis of IEM Cologne, match level betting usually follows the progress of the tournament.
The Falcons were involved in the top three trades. This can be easily explained by the number of qualifiers where two teams have been selected to win the entire tournament before Team Spirit and Team Vitality.
Matching volume
Top 15 Matches – All Divisions
Measured by combined market volume (both sides)
June 2–21, 2026
League of Legends can be set for a big MSI
One game would make it into the top ten, sitting just above 9z vs FURIA outside of Counter-Strike and that game was T1 vs Gen.G with $1.97 million in sales. There hasn’t been any bad League of Legends action lately with MSI just finished (and my god, did T1 look solid). The Korean world champions didn’t drop a single map as they advanced to the main stage at MSI. As we head into July, it will be interesting to see if having a major global League of Legends event takes on the popularity of Counter-Strike. Considering that the number of things planned is very low, MSI may not reach the seismic volume of Cologne, but I would expect some heavy hitters in game volume alone.
Editor’s note: Statistics covers Kalshi esports markets from 2026-06-01 → 2026-06-30. “Contracts” means the total contract value traded on the market; “trade” refers to the amount of each fill. Weekly blocks start Sunday-Saturday from June 1; Week 5 is a two-day tail (June 29-30) and should not be directly compared to the full seven weeks. CS2 match winner, map winner, overall maps and qualification markets are combined into a single “Same Bet” line for all, as they all bet on the same basic match; A separate CS2 Tournament Winner market (future direct selection) is kept in its own line. The statistics for each game combine both sides of the game (eg “A will win” and “B will win”) into a total market size; where only one sided volume was available, the figure is marked and shows that side only. The figures are taken from Kalshi public market data.
