Kalshi and Polymarket Trading Volume Sets Record

cryptonews.ruPublished on 2026-08-03Last updated on 2026-08-03

Abstract

Trading volume on prediction platforms Kalshi and Polymarket set a record in July. Kalshi remained the largest platform, with monthly trading volume reaching $37.7 billion, a 14% increase from June. Meanwhile, volume on the international Polymarket fell 26% to $7.9 billion, while its US-regulated counterpart, Polymarket US, saw a 54% rise to $5 billion. The combined volume for both Polymarket entities decreased from $14 billion in June to $12.9 billion in July. Analysts attribute Kalshi's growth to its decision to open access to all U.S. users in May, removing registration restrictions. The primary driver for increased betting volume in July was the FIFA World Cup, held from June 11 to July 19. Kalshi's market for the final match attracted about $1.9 billion, while bets on the tournament winner on Polymarket reached approximately $4 billion. Following the tournament's conclusion, activity declined significantly. The aggregate open interest across Polymarket, Polymarket US, and Kalshi fell from around $2 billion in early July to $1.2 billion by month's end. According to earlier Chainalysis estimates, total World Cup-related contract volume on these platforms was $20 billion, accounting for about 63% of all activity on prediction platforms during the qualifiers and tournament.

Kalshi remained the largest prediction platform in July. Monthly trading volume on the platform reached $37.7 billion, a 14% increase from the previous month.

Meanwhile, trading volume on the international platform Polymarket decreased by 26% to $7.9 billion, while the turnover of the US-based Polymarket US increased by 54% to $5 billion. As a result, the combined trading volume of the two platforms decreased from $14 billion in June to $12.9 billion in July.

Analysts at The Block linked the increase in activity to Kalshi's decision to open access to all users in the United States. In May, the company, whose activities are regulated by the Commodity Futures Trading Commission (CFTC), lifted registration restrictions, allowing American traders to legally participate in trading without the need to bypass regional blocks in individual states.

The Block identified the main factor for the growth in betting volume in July as the FIFA World Cup, which took place from June 11 to July 19. The Kalshi prediction market for the final match between Spain and Argentina attracted about $1.9 billion, while the volume of bets on the tournament winner on Polymarket reached approximately $4 billion.

The end of the championship led to a noticeable decline in activity. The aggregate open interest on Polymarket, Polymarket US, and Kalshi decreased from about $2 billion in early July to $1.2 billion by the end of the month, writes The Block.

Earlier, Chainalysis experts estimated the combined trading volume on Polymarket and Kalshi for contracts related to the FIFA World Cup at $20 billion. According to their data, bets on tournament matches accounted for about 63% of all activity on prediction platforms during the qualifying matches and the championship itself.

end-content

Related Questions

QWhich platform remained the largest predictions platform by trading volume in July?

AKalshi remained the largest predictions platform by trading volume in July.

QWhat was the primary factor contributing to the growth of trading volumes in July according to The Block?

AAccording to The Block, the primary factor was the FIFA World Cup held from June 11 to July 19.

QWhat significant change did Kalshi make in May that analysts linked to increased activity?

AKalshi opened access to all users in the U.S. by removing registration restrictions, allowing American traders to legally participate without bypassing regional state blocks.

QWhat happened to the total open interest across Polymarket, Polymarket US, and Kalshi by the end of July?

AThe total open interest across these platforms declined from about $2 billion at the start of July to approximately $1.2 billion by the end of the month.

QAccording to Chainalysis, what percentage of activity on prediction platforms during the World Cup qualifiers and tournament was driven by bets on the matches?

AAccording to Chainalysis, bets on the tournament matches accounted for about 63% of all activity on the prediction platforms during that period.

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