TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 26, 2:10 PM EST
Kalshi
The ISPS HANDA Senior Open is an annual professional golf tournament on the PGA Tour Champions held in the United Kingdom. A player's contract resolves to Yes if they win the tournament, or to No if they forfeit, withdraw, or fail to participate before teeing off.
Tournament winner contracts resolve to Yes if the specified player wins the ISPS HANDA Senior Open. If a player forfeits, withdraws, or does not participate prior to teeing off, Tournament Winner and End of Round Leader markets resolve to No, while Finishing Position, Make the Cut, Head-to-Head, and 3-Ball markets resolve to Fair Market Value.
Prediction market odds and traditional sportsbook odds often diverge because they reflect different participant pools and incentive structures. Sportsbooks set lines to balance action and manage risk, while prediction markets like this one are driven by trader belief and financial commitment. Over time, prediction markets have demonstrated accuracy in forecasting outcomes because participants stake real capital on their convictions. Comparing this market's odds to major sportsbook lines can reveal where professional bettors and retail traders disagree on the tournament favorite.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing each potential winner. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each share reflects the collective probability assigned by the market; a share trading at 0.65 implies a 65% implied chance of that outcome. As new information emerges—player form, course conditions, injury reports—traders adjust their positions, causing prices to shift. This dynamic pricing ensures the market remains responsive to real-world developments leading up to the tournament.
This market resolves around Jul 26, 2026, once the ISPS HANDA Senior Open tournament concludes and the winner is confirmed. The outcome is determined by verified results from credible public sources covering professional golf. Traders holding shares in the correct winner receive their payout, while incorrect positions expire worthless. The resolution process is automated once the official result is published, ensuring fair and transparent settlement for all participants.
Several factors can shift odds in this market before Jul 26, 2026. Player injuries, recent tournament performances, and course-condition updates typically trigger repricing as traders reassess probabilities. Major announcements regarding field changes or withdrawal of top contenders will cause sharp moves. Weather forecasts closer to the event date and real-time leaderboard updates during early rounds can also drive significant trading activity. Media coverage highlighting form or momentum swings often precedes noticeable odds adjustments as new information reaches the trading community.