Infiniti Intelligence Hourly Briefing — Oct 16, 2026 · 2:24 PM ET

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.

The Polymarket contract on whether Katie Zacharia will be out as Press Secretary by October 31 reached a market-implied probability of 96.7%, with $337K traded, in the Oct 16, 2026 update published at 2:24 PM ET. The reading reflects traders’ expectations, not confirmation of a personnel change.

What the figures establish

Both price and reported trading volume increased from the earlier snapshot supplied for the story. The material does not identify a news event behind the repricing or provide an announcement confirming Zacharia’s departure.

According to predictionbubbles.net, its market tracker refreshes prices from Polymarket and Kalshi every 15 minutes. It defines traded volume as cumulative activity, distinct from liquidity available on the order book or the value of positions that remain open.

The supplied predictionbubbles.net page explains that methodology but does not display the Zacharia contract or its settlement terms. The contract-specific figures therefore come from the supplied story update; the available source text does not independently establish those readings or the precise conditions required for resolution.

What it means for prediction markets

• Earlier comparison: The 1:54 PM lead on Oct 16, 2026 carried a 70.2% probability and $212K traded, below the subsequent 96.7% and $337K readings.
• Price is not confirmation: The latest probability shows a strongly one-sided market expectation, but it does not establish that the underlying event has occurred.
• Volume has limits: $337K in trading activity is not a measure of current liquidity. The October 31 deadline and the contract’s exact settlement rules remain central to interpreting the outcome.