TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 11, 5:29 PM EST
Kalshi
UFC 329 middleweight early preliminary bout between Zachary Reese and Ryan Gandra scheduled for July 11, 2026. Markets cover fight winner, method of victory (KO/TKO, submission, decision), and fight duration thresholds. Polymarket offers granular outcome markets while Kalshi provides a binary winner-determination market.
This market will resolve to "Zachary Reese" if Zachary Reese is officially declared the winner of the fight against Ryan Gandra at UFC 329: McGregor vs. Holloway 2, scheduled for July 11, 2026. It will resolve to "Ryan Gandra" if Ryan Gandra is officially declared the winner. If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond July 25, 2026, this market will resolve "50-50." The resolution source for this market will be official information from the UFC.
The market resolves based on the winner of the Gandra vs Reese professional MMA fight originally scheduled for July 11, 2026. If the fight is postponed or delayed, the market remains open and closes after the rescheduled fight concludes within two weeks. In the event of a tie or no contest, both fighter markets resolve to 50/50. If the fight is cancelled or rescheduled beyond two weeks, the market resolves to a fair price in accordance with the rules.
Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform attracts different trader demographics, liquidity pools, and fee structures, which can cause temporary price divergence. Polymarket and Kalshi also operate under distinct regulatory frameworks and market-making incentives. Arbitrage traders typically exploit these gaps, but on lower-volume events like early prelims, spreads may persist longer. Platform-specific UI design and user base composition also influence how quickly new information is priced in.
Fighter injury announcements, weight-cut complications, or late withdrawals can trigger sharp repricing. Social media momentum, training camp updates, or analyst commentary may shift trader sentiment gradually. Odds from offshore sportsbooks or sharp money flowing into one side can signal informed positioning. Weigh-in results and fighter walkout energy on fight day itself represent the final catalysts before the bell rings, though most repricing typically occurs in the 48 hours before the bout.