TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 11, 8:59 PM EST
Kalshi
This market tracks whether the UFC 329 light heavyweight preliminary bout between Robert Whittaker and Nikita Krylov will extend beyond 0.5 rounds, aggregating data from Kalshi and Polymarket with resolution sourced from UFC.com. The consensus probability for the over/under 0.5 rounds outcome stands at 96.0%. Watch the scheduled fight date of July 11, 2026, to see how the actual bout duration resolves against this threshold.
This market will resolve to "Robert Whittaker" if Robert Whittaker is officially declared the winner of the fight against Nikita Krylov at UFC 329: McGregor vs. Holloway 2, scheduled for July 11, 2026. It will resolve to "Nikita Krylov" if Nikita Krylov 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.
Resolution depends on the fight outcome occurring on or shortly after the originally scheduled date of July 11, 2026. If the fight is postponed or delayed, the market remains open and closes after the rescheduled bout concludes within two weeks. In the event of a tie or no contest, both fighters receive a 50/50 split resolution. Should the fight be cancelled or rescheduled beyond two weeks from the original date, the market resolves to a fair price in accordance with established rules.
Prediction markets like these operate on crowd-sourced pricing, where traders directly buy and sell shares reflecting their belief in an outcome. Unlike traditional sportsbooks, which set fixed odds and profit from the spread, prediction markets aggregate distributed opinions into a consensus probability. This can sometimes reveal sharper or earlier signals than sportsbook lines, especially as new information emerges. However, sportsbooks often benefit from professional oddsmakers and deeper liquidity, so comparing both sources provides a fuller picture of market sentiment.
Polymarket and Kalshi operate under different market structures, user bases, and liquidity conditions. 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's fee structure, trading interface, and regulatory framework can influence how quickly prices adjust to new information. Differences in user sophistication, geographic distribution, and order flow may also cause temporary pricing gaps. Traders monitoring both venues can sometimes exploit these spreads, though arbitrage typically narrows discrepancies over time as the event approaches.
Fighter news—injuries, training updates, or weight-cut issues—can significantly shift odds in either direction. Changes in betting patterns on external sportsbooks or social media sentiment may also influence trader behavior here. Weigh-in results, last-minute fighter withdrawals, or opponent changes would trigger sharp repricing. Media coverage, expert analysis, and historical performance data released closer to fight day can all move the needle. Monitor official UFC communications and fighter social accounts for developments that could alter market expectations.