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Kalshi June notional trading volume hits record $32.6 billion

Kalshi June notional trading volume hits record $32.6 billion

Kalshi nearly doubled from more than $17 billion in May, while The Block said combined June volume for Kalshi and Polymarket reached $44.8 billion as World Cup trading lifted activity.

Fact Check
Kalshi's own data (via KalshiData/Binance News and Odaily) confirms June notional volume of $32.6 billion, a record, nearly doubling May's $17B+, driven by the World Cup — exactly matching the claim. The Block's report confirms the $44.8B combined Kalshi+Polymarket June volume, also World Cup-driven. The Block's Kalshi figure ($31.5B, May $16.81B) differs slightly from Kalshi's self-reported $32.6B/$17B+ numbers, but the claim correctly attributes each figure to its respective source, so this discrepancy does not undermine the claim.
Summary

Kalshi's notional trading volume reached a record $32.6 billion in June, nearly doubling from more than $17 billion in May, according to KalshiData on X, which said World Cup events were the main driver. The Block separately reported that combined June trading volume across Kalshi and Polymarket totaled $44.8 billion, up 75% from $25.66 billion in May. In that breakdown, Kalshi rose from $16.81 billion to $31.5 billion, while Polymarket's main platform increased from $7.08 billion to $10.26 billion and Polymarket US climbed from $1.77 billion to $3.04 billion. The figures point to a sharp month-over-month expansion in prediction-market activity tied to a major global sporting event, while leaving a discrepancy between Kalshi's platform-specific June totals reported in separate accounts.

Terms & Concepts
  • prediction-market activity: Trading in contracts whose value depends on the outcome of future events.
  • notional trading volume: The total face value of trades executed over a given period.