Why did Kalshi record a surge in trading volume during June?

Kalshi recorded a record US$9.4 billion in June trading volume as the expanded 2026 FIFA World Cup increased activity across prediction markets. Monthly volume rose from about US$5.3 billion in May as traders placed more event-based contracts on tournament matches.

What are Kalshi's and Polymarket International's June trading volumes?

Kalshi recorded about US$9.4 billion in trading volume during June, while Polymarket International reached roughly US$4.3 billion. That compared with approximately US$5.3 billion and US$3.5 billion respectively in May.

How is the 2026 FIFA World Cup affecting Kalshi's trading activity?

The 2026 FIFA World Cup has become the largest driver of trading activity on Kalshi. Canada's Round of 16 match against Morocco generated more than US$48 million in trading volume, while the United States Round of 16 match attracted more than US$2.1 million.

What does the regulatory debate mean for Kalshi's prediction markets?

Kalshi remains at the centre of a regulatory dispute in the United States over whether prediction markets should be regulated by the Commodity Futures Trading Commission or under state gambling laws. Nearly a dozen US states have challenged prediction market operators.

Why is the European Securities and Markets Authority reviewing prediction market contracts?

The European Securities and Markets Authority said some prediction market contracts may already fall under existing binary options restrictions. The regulator said the legal treatment depends on a product's characteristics rather than whether it is labelled as an event contract.

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Kalshi June trading volume reaches US$9.4B

Written by Liezl GambePublished Jul 5, 2026, 11:46 PM

Kalshi recorded a record US$9.4 billion in June trading volume as the expanded FIFA World Cup boosted prediction market activity.
Polymarket International also grew monthly trading volume to about US$4.3 billion from US$3.5 billion in May.
The surge comes as prediction markets face ongoing regulatory disputes in the United States despite rising user activity.

Kalshi recorded a record US$9.4 billion in trading volume during June, up from about US$5.3 billion in May, as the expanded 2026 FIFA World Cup increased activity across sports prediction markets.

The tournament, which began on 11 June with 48 teams instead of the previous 32, became the largest driver of prediction market trading during the month, while Polymarket International's monthly trading volume rose to about US$4.3 billion from US$3.5 billion.

"To any state that seeks to nullify federal law and seize authority over these markets, we will see you in court," said Commodity Futures Trading Commission Chair Michael Selig.

Knockout matches generated some of the largest trading volumes, with Canada's Round of 16 match against Morocco attracting more than US$48 million on Kalshi and over US$26.8 million on Polymarket, while the United States Round of 16 match generated more than US$2.1 million and US$1.6 million respectively.

Prediction markets continue to expand despite regulatory challenges, and Kalshi is a privately held company so no share price was available following the latest trading figures.

Nearly a dozen US states have challenged prediction market operators including Kalshi and Polymarket, while the Commodity Futures Trading Commission has argued that federally regulated prediction markets fall under its jurisdiction rather than state gambling laws.

European regulators have taken a different approach, with the European Securities and Markets Authority stating that some event contracts may already fall under existing binary options rules depending on their characteristics rather than how they are labelled.