Prediction markets traded $99.5B in the last 30 days, with Kalshi handling 76% and volume up 58% on the prior 30 days

Prediction markets recorded $99.5B in trading volume over the last 30 days, up 58% from the prior 30 days, according to DeFi Rate’s tracker snapshot published Oct 16, 2026, at 2:24 PM ET.

Kalshi accounted for 76% of that volume, according to DeFi Rate, putting the platform well ahead of the rest of the market combined.

What the volume figures measure

The $99.5B total values contracts at their $1 face value. DeFi Rate separately reported $25.2B in dollars actually paid—a distinction that matters when assessing how much money changed hands rather than the face value of contracts traded.

The tracker also showed $3.7B in volume over the last 24 hours. The update is a trading-activity snapshot, not an announcement of a new platform development.

What it means for prediction markets

• Measurement matters: The $99.5B face-value figure and $25.2B actually paid describe different aspects of activity and should not be treated as interchangeable.
• Activity increased: The 58% rise measures volume against the previous 30 days; it does not establish how forecasts or market probabilities changed.
• Volume is concentrated: Kalshi’s 76% share makes its activity central to interpreting the aggregate figures in this snapshot.