World Cup Pushes Kalshi Past $100 Billion as Daily Volumes Cross $1 Billion

Kalshi crossed $100 billion in lifetime notional volume and logged its first billion-dollar trading days over the weekend, as World Cup markets drove prediction market activity to new highs.

The move shows how fast sports contracts have become the sector’s main growth engine, overtaking the categories that previously carried much of the industry’s volume.

World Cup Becomes Prediction Markets’ Biggest Liquidity Event

The World Cup is turning into the largest volume event prediction markets have seen so far. Kalshi reported $6.38 billion in notional volume for the week ending June 14, up 43% from $4.46 billion a week earlier. That was another all-time weekly record for the platform.

JUST IN: @Kalshi set a new record of over $6.1B in Weekly Notional Volume pic.twitter.com/nhWcUEQKbt

— KalshiData (@kalshidata) June 15, 2026

Polymarket’s notional trading volume also reached about $2.33 billion on a weekly basis, according to Token Terminal data. The two platforms handled over $8 billion combined.

Sports contracts drove most of the increase. On Kalshi, sports volume rose 52% to $3.38 billion, while its parlay-style Exotics category topped $2 billion in weekly volume for the first time.

That is changing the industry’s volume mix. Politics and crypto still matter, but the World Cup is showing that global sports events can bring liquidity at a scale once associated mainly with major election cycles.

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Kalshi Records its First Billion-Dollar Trading Days

On Saturday, Kalshi recorded its first billion-dollar trading day, with $1.224 billion in notional volume. On Sunday, it broke the record again, reaching $1.236 billion, according to DeFi Rate.

The weekend also came with a packed sports calendar: several World Cup group-stage matches, plus other major sporting events. Daily volume nearly doubled from the previous weekend, underlining how closely prediction market activity is becoming tied to major sports schedules.

The World Cup has been the main driver of prediction market activity over the past two weeks, helping both Kalshi and Polymarket reach record volume levels. The surge suggests that major sporting events can generate the kind of liquidity previously associated primarily with election cycles.