Napoli wins priced at 9% on Kalshi, down 48 points, on $772K traded

The Napoli win contract on Kalshi was priced at 9%, down 48 probability points, with $772K traded in the Oct 17, 2026 · 11:24 AM ET update. According to PredictionBubbles, it ranked as the day’s largest downward move on its movers board.

A sharp shift in sports pricing

The decline represents a change in the contract’s market-implied probability over 24 hours—not a 48% relative drop. The supplied material does not identify the specific Napoli event, its settlement conditions or a catalyst for the repricing.

The $772K trading figure provides context for the move, but does not establish the market’s liquidity or explain why its price fell. PredictionBubbles treats trading volume separately from price movement when compiling its rankings.

What the ranking captures

According to PredictionBubbles, the board compares markets on Polymarket and Kalshi using the size of their 24-hour probability-point changes. Its supplied snapshot drew venue prices on 17 Oct 2026, 15:09 UTC, with updates every 15 minutes.

The ranking covered 1,987 markets with lifespans longer than 14 days, excluding same-week fixtures to limit the influence of price swings associated with settlement. Only open contracts with a valid 24-hour comparison qualify; volume and liquidity do not affect their position.

What it means for prediction markets

• The signal is repricing: The 9% price records traders’ current assessment, not a confirmed outcome.
• The ranking has limits: Napoli’s position refers to the board’s eligible markets, rather than every sports contract available.
• Context remains incomplete: Without the underlying event, settlement rules or a reported catalyst, the price and volume figures alone cannot explain the decline.