Prediction Market Reports

Weekly and monthly breakdowns of trading volume across major prediction market platforms. Each report tracks dollar volumes, market share shifts, and emerging trends across Kalshi, Polymarket, and other platforms with original data and analysis.

Kalshi Sets $17.9B Record May as World Cup Lifts Polymarket US to Weekly High

Kalshi closed May with $17.91 billion in notional volume, its ninth consecutive monthly record and a 21% jump from April’s then-record $14.81B, according to DeFi Rate’s...

Valerie Cross

June 8, 2026

Prediction Market Reports

Kalshi Sets Weekly High $4.1B Volume as Polymarket Continues Slide to $1.6B

Kalshi hit a record $4.13B in weekly notional volume, up 8.5% WoW, while Polymarket fell 6.2% to $1.60B. Kalshi now holds 72.1% of combined...

Valerie Cross

May 11, 2026

Prediction Market Reports

Kalshi Posts Record $3.9B Volume Week, Extends Lead Over Polymarket as Parlays Surge

Weekly notional volume bounced back sharply after last week’s post-Masters pullback, with the two leading prediction markets combining for $5.9B in weekly notional volume for the week...

Valerie Cross

April 27, 2026