Weekend volume topped $10B for the first time, with Kalshi at $7.87B and combos near 70% of its flow

Weekend notional crosses $10B

Prediction-market weekend notional volume exceeded $10B for the first time, according to Gambling Insider. TickerTracker estimated the total at $10.4B, up 11% from the prior weekend, while DeFi Rate put it near $10.5B.

Kalshi accounted for $7.87B of the weekend total. That placed the platform at the center of the record activity, with its contribution representing most of the volume captured by either estimate.

Combos made up nearly 70% of Kalshi’s flow, according to Gambling Insider. The concentration makes product mix an important part of the story alongside the headline increase in notional volume.

Kalshi also posted consecutive daily records, including $3.91B on Saturday. The available summary does not provide the other daily figure, and the full source text was unavailable.

What it means for prediction markets

• The milestone is supported by two estimates: TickerTracker’s $10.4B and DeFi Rate’s roughly $10.5B both put weekend notional above $10B, though their totals differ.
• Kalshi’s product mix matters: With combos near 70% of its flow, the aggregate volume figure should not be read as a measure of standalone-contract activity.
• Volume is not a directional signal: The supplied figures describe trading activity, not changes in event probabilities or which outcomes traders favored.