TOTAL VOLUME:
$154.4b
24H VOL:
$245,801,863
24H TRANSACTIONS:
2,984,028,936
OPEN INTEREST:
$1,902,097,102
417,059
Markets across
40,178
events
MATCHED EVENTS:
4,415
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 31, 5:12 PM EST
Polymarket
This market refers to the tennis match between Dylan Dietrich and Aidan Mayo in the Sioux Falls, originally scheduled for October 31, 2026 at 11:00AM ET. This market will resolve to 'Dylan Dietrich' if Dylan Dietrich advances against Aidan Mayo. This market will resolve to 'Aidan Mayo' if Aidan Mayo advances against Dylan Dietrich. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 14, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Dylan Dietrich and Aidan Mayo in the Sioux Falls, originally scheduled for October 31, 2026 at 11:00AM ET. This market will resolve to 'Dylan Dietrich' if Dylan Dietrich advances against Aidan Mayo. This market will resolve to 'Aidan Mayo' if Aidan Mayo advances against Dylan Dietrich. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 14, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Typically, prediction markets and sportsbooks arrive at similar probabilities, though discrepancies can emerge. Sportsbooks often incorporate a 'vig' or commission into their odds, ensuring a profit margin, while prediction markets aim to reflect the true collective belief of traders. If sportsbook odds significantly differ from those seen in this market, it could indicate differing expert opinions or a unique insight held by prediction market participants. However, it’s important to remember that both represent probabilities, not guarantees, and are subject to change as new information becomes available.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in the likelihood of each candidate winning. The price of a share directly corresponds to the implied probability of that outcome. As more traders buy shares of a particular candidate, the price increases, reflecting growing confidence in their chances. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market’s price is driven entirely by supply and demand, with no external factors influencing the valuation of shares. This dynamic pricing ensures the market reflects the collective wisdom of the crowd.
This market resolves around Nov 7, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on which candidate is officially declared the winner of the Sioux Falls mayoral election by the relevant election authorities. The market will then settle to 100% for the winning candidate and 0% for all others. It’s important to note that the official election results, as reported by these authorities, are the definitive source for determining the market’s outcome.
Several factors could significantly impact this market. Major endorsements from influential figures, shifts in public opinion revealed by new polls, and any significant campaign events or debates could all cause the odds to change. Unexpected news stories concerning either candidate, such as controversies or policy announcements, could also lead to substantial movement. Furthermore, changes in voter turnout expectations or fundraising numbers could influence traders’ perceptions and, consequently, the price of shares in this market. Monitoring these signals will be key to understanding potential shifts in the odds.