UEFA Champions League 2026

The 2025-26 UCL final, cross-exchange

Polymarket's UEFA Champions League Winner and Kalshi's KXUCL-26 are the two clean Categorical books on this season's title. The 2026 final is Saturday, May 30 in Munich. Read the two pies side by side—where the spread is widest is where the cross-exchange microstructure story lives.

Adjacent context comes from Polymarket's UEFA Champions League: Unbeaten Champion Single (a sub-question on whether the eventual winner went undefeated through the bracket) and the Top Scorer race. Use the season-long history widget at the bottom to see how the favorite's price has tracked across the knockouts.

Same Categorical on both exchanges. Pies show every team in the field—no count cap—so the long-tail clubs stay visible alongside the favorite.

Two adjacent Polymarket books: Unbeaten Champion prices the binary that the eventual winner went undefeated across the bracket; Top Scorer prices the Golden Boot race for the season.

What to watch.

• Cross-exchange pie shape. Both Polymarket and Kalshi list every team in the bracket. The favorite's implied probability often diverges by 1–3 points between books—that's the cross-exchange basis on the most-traded outcome and tightens fast in the final 48 hours.
• Pre-final liquidity drift. Polymarket's volume tends to peak in the 24 hours into the final; Kalshi's pulls forward a day earlier. If the leader's pie slice on Polymarket starts lagging Kalshi, that's a Polymarket-side pricing inefficiency window.
• Unbeaten Champion Single. A small but information-rich book—it prices conditional probability that the winner went undefeated. When the implied probability rises, the market is consolidating on a single dominant team.
• Adjacent semifinal markets. Kalshi's KXUCLGAME-26MAY30PSGARS is the live game line on the final. Use the search widget below to surface the latest semifinal and final-game markets as they list.