Bologna FC 1909 vs. FC Internazionale Milano

Platform comparison

Active sub-markets

Market context

Bologna travel to the San Siro on 24 May 2026 to face Inter Milan in a Serie A fixture. The 26% implied probability on Polymarket reflects a significant underdog position for the Emilia-Romagna side. Across competing platforms, this market reveals structural differences: Kalshi's decimal odds conversion (approximately 3.85) and Betfair's traditional fractional display (11/4) both surface the same underlying probability, yet fee structures diverge materially—Polymarket's 2% taker fee versus Betfair's variable commission on winning bets creates different effective returns for matched bets. Smarkets' 4% commission sits between these poles, whilst KYC requirements vary, with Kalshi's US-focused regulatory stance contrasting Betfair's European reach.

Historically, Bologna's away record against top-six opposition provides context. In the 2024–25 season, the club won promotion back to Serie A after a decade's absence, establishing themselves as a mid-table stabiliser rather than a consistent European contender. Inter, conversely, finished second in 2024–25 and remain title favourites for 2025–26. The fixture's timing—late May—suggests both teams' final-day positioning will be settled; if Inter have secured silverware or European qualification by then, squad rotation becomes a material variable.

Team news and injury updates will crystallise closer to the settlement window. Recent fixture congestion, European competition schedules, and managerial rotation patterns typically emerge in the fortnight preceding the match. Traders monitoring Gazzetta dello Sport and Sky Italia's team sheets will gain early signals on starting-eleven composition, particularly whether Inter field a full-strength eleven or prioritise recovery for summer commitments.

Methodology

We read Bologna FC 1909 vs. FC Internazionale Milano from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

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.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.