TOTAL VOLUME:
$154.4b
24H VOL:
$230,589,906
24H TRANSACTIONS:
2,984,028,936
OPEN INTEREST:
$1,885,293,300
410,482
Markets across
40,213
events
MATCHED EVENTS:
4,340
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 26, 1:21 AM EST
Polymarket
This market refers to the tennis match between Arina Kostina and Chanel Janssen in the W15 Essen, Qualifying, originally scheduled for October 25, 2026 at 9:30AM ET. This market will resolve to 'Arina Kostina' if Arina Kostina advances against Chanel Janssen. This market will resolve to 'Chanel Janssen' if Chanel Janssen advances against Arina Kostina. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 8, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Arina Kostina and Chanel Janssen in the W15 Essen, Qualifying, originally scheduled for October 25, 2026 at 9:30AM ET. This market will resolve to 'Arina Kostina' if Arina Kostina advances against Chanel Janssen. This market will resolve to 'Chanel Janssen' if Chanel Janssen advances against Arina Kostina. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 8, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the outcome of the Kostina vs Janssen match. The price of a share directly reflects the probability of that outcome occurring. As more people buy shares in a particular outcome, its price increases, and the implied probability rises. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market is driven entirely by supply and demand, with traders adjusting their positions based on new information and their own analysis of the match.
This market resolves around Nov 1, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the W15 Essen tennis match between Arina Kostina and Chanel Janssen. The platform will verify the result against widely available sources to determine which outcome is the winner. Traders holding shares in the winning outcome will be paid out according to the final market price at the time of resolution.
Several factors could influence the price of this market before Nov 1, 2026. Any news regarding player injuries, changes in playing conditions, or updates on their recent performance could shift trader sentiment. Unexpected upsets in earlier rounds of the tournament, or even weather forecasts impacting the match schedule, could also cause significant price movements. Furthermore, large trades by influential market participants could create short-term volatility and impact the overall probability assessment of the Kostina vs Janssen match.