TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 19, 2:21 PM EST
Polymarket
In the upcoming Serie A game between AS Roma and FC Internazionale Milano, scheduled for September 19, 2026 at 12:00 PM ET: This market will resolve based on the halftime score of the AS Roma vs. FC Internazionale Milano match originally scheduled for September 19, 2026 at 12:00 PM ET, considering only goals scored within the first 45 minutes of regular play plus first-half stoppage time; second-half goals, extra time, and penalty shoot-outs are excluded. If the actual halftime score is not one of the explicitly listed outcomes, the market resolves to "Any Other Score." If the match is postponed, the market will remain open until it is completed; if it is canceled with no make-up game, the market resolves to "0-0." The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determining the outcome. If no acceptable data is available within 24 hours of the event's conclusion, this market will resolve 50-50, or to "Draw" where applicable.
In the upcoming Serie A game between AS Roma and FC Internazionale Milano, scheduled for September 19, 2026 at 12:00 PM ET: This market will resolve based on the halftime score of the AS Roma vs. FC Internazionale Milano match originally scheduled for September 19, 2026 at 12:00 PM ET, considering only goals scored within the first 45 minutes of regular play plus first-half stoppage time; second-half goals, extra time, and penalty shoot-outs are excluded. If the actual halftime score is not one of the explicitly listed outcomes, the market resolves to "Any Other Score." If the match is postponed, the market will remain open until it is completed; if it is canceled with no make-up game, the market resolves to "0-0." The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determining the outcome. If no acceptable data is available within 24 hours of the event's conclusion, this market will resolve 50-50, or to "Draw" where applicable.
Generally, prediction market odds reflect the wisdom of the crowd and can sometimes differ from traditional sportsbook odds. Sportsbooks often set initial lines to balance action, while this market allows traders to freely express their beliefs about the probability of each exact first-half score. If a significant discrepancy exists, arbitrage opportunities might arise, where traders can profit by betting on both platforms. However, it’s important to remember that sportsbook odds incorporate a margin for the house, whereas this market aims to represent pure probabilities.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing different exact scores. The price of each share reflects the market’s collective belief about the probability of that score occurring in the first half. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information becomes available, the prices adjust accordingly, providing a dynamic assessment of the potential outcome. The total volume traded also influences price discovery, with higher volume generally indicating greater confidence in a particular outcome.
This market resolves around Sep 19, 2026, with the outcome confirmed once the official result of the first half of the AS Roma vs. Inter Milan match is verifiable from credible public reporting. The exact score at the end of the first half, as determined by official match statistics, will be the determining factor. The platform will then verify the result and distribute payouts to those who correctly predicted the first-half score.
Several factors could influence trading activity in this market. Late-breaking news regarding player injuries or suspensions for either AS Roma or Inter Milan would likely cause significant shifts in the odds. Changes in team formations or tactical approaches announced before the match could also impact trader sentiment. Even general news about team morale or recent performance could play a role. Finally, any large trades executed on Polymarket could temporarily move the prices, especially if they represent a strong conviction from a prominent trader.