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:

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Kalshi:

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Fight Night: Castaneda vs Heili
kalshi

What is the result of Castaneda vs Heili?

Volume:
$878,430

Alateng Heili

 - Kalshi

Alateng Heili - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 26, 2026

Closed: Sep 26, 5:54 PM EST

kalshi

Kalshi

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Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Alateng Heili

View
100%
75%
Yes 100¢No 0¢
100¢
N/A
$481,906
N/A
N/A
$304,604
Settled
Yes
kalshi

John Castaneda

0%
77%
Yes 0¢No 100¢
100¢
N/A
$396,524
N/A
N/A
$284,461
Settled
No
Total markets: 2

Intro

This market tracks whether Alateng Heili or John Castaneda will win their professional MMA fight scheduled for September 26, 2026. Currently, Kalshi gives Alateng Heili a 99.0% probability of winning, while John Castaneda is at 1.0%. The market resolves based on the outcome of the fight, as determined by the official result if John Castaneda wins the Castaneda vs Heili professional MMA fight originally scheduled for Sep 26, 2026. Keep a close eye on the fight itself on September 26, 2026, as the result of that event will determine the market’s resolution.

Kalshi

The market resolves based on the winner of the Castaneda vs Heili professional MMA fight originally scheduled for Sep 26, 2026. If the fight is postponed or delayed, the market remains open and closes after the rescheduled fight concludes within two weeks. A tie or no contest results in a 50/50 resolution for both fighters, while cancellation or rescheduling beyond two weeks leads to a fair price resolution. These rules apply equally to both fighters' markets and are independent of any endorsement claims by Zuffa LLC, d/b/a Ultimate Fighting Championship, UFC.

Frequently asked questions

On Kalshi, the dashboard for the Castaneda vs Heili fight tracks the current odds, price history, and 24-hour trading volume. Currently, the 24-hour volume is $824,786, and the total volume traded on this market is $878,430. The dashboard provides a visual representation of how traders are pricing the likelihood of each outcome in this contest. You can see how the probabilities have shifted over time and identify potential trading opportunities based on market activity. This information is updated in real-time, offering a dynamic view of market sentiment.

Prediction market odds often reflect the collective wisdom of a diverse group of traders, potentially differing from those set by sportsbooks. Sportsbooks establish lines based on statistical models and expert analysis, while this market incorporates a wider range of information and perspectives. It's common to see discrepancies, especially as new information emerges or public sentiment shifts. While sportsbooks may initially set odds to balance action, this market continuously adjusts based on actual trading activity. Comparing these odds can provide valuable insights into public perception and potential value bets.

This market resolves around Sep 27, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Castaneda vs Heili fight, as determined by the relevant boxing authorities. The market will settle to 100 for the winning fighter, and 0 for the losing fighter. Traders holding contracts for the winning outcome will receive a payout, while those holding contracts for the losing outcome will forfeit their investment. The exact timing of resolution may depend on the speed of official results.

Several signals or events could significantly impact this market. Any news regarding fighter injuries, changes in training regimens, or pre-fight weigh-in results could shift the odds. Public statements from fighters or their trainers, as well as expert analysis from boxing commentators, could also influence market sentiment. Unexpected betting patterns in traditional sportsbooks might also cause traders to reassess their positions. Ultimately, any information that alters perceptions of the fighters’ relative strengths and weaknesses has the potential to move this market before Sep 27, 2026.