ACF Fiorentina vs. Atalanta BC

Platform comparison

Active sub-markets

Market context

Fiorentina host Atalanta in Serie A on Sunday, with settlement depending on the match being played before the 2026-05-24T13:00:00Z cut-off. A 35% “YES” price implies a modest underdog chance, and the market should be read against the fact that Atalanta are generally the stronger side on season data, while Fiorentina have been harder to beat at home. Recent previews have leaned towards a narrow away win or low-scoring draw, with one model-led view calling 1-2 to Atalanta and another expecting 1-1, which is consistent with a mid-range probability rather than a clear favourite.

For accessibility, the regulatory frame matters as much as the football. On German-facing venues, the GlüStV regime can affect whether a market is offered at all, while US CFTC reach is relevant where a platform’s exposure or user base brings it within derivatives-style scrutiny. “No-KYC up to $1,500” means smaller positions may be available with lighter identity checks, so this fixture could be tradable more easily at low stakes, but higher-value activity is typically more restricted. For the sporting catalysts, the main items are line-ups, injury updates and any confirmation of Atalanta’s European qualification status before kick-off; SportsMole’s preview on 21 May noted that a win or draw would secure Atalanta a Conference League place, which may affect incentive and selection choices.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track ACF Fiorentina vs. Atalanta BC on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.