TOTAL VOLUME:

$134b

24H VOL:

$87,997,338

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,395,155,069

395,664

Markets across

30,076

events

MATCHED EVENTS:

2,626

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
Fight Night: Rosas Jr vs Barcelos
kalshi

What is the result of Rosas Jr vs Barcelos?

Volume:
$7,265,199

Raul Rosas Jr

 - Kalshi

Raul Rosas Jr - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 27, 2026

Closed: Sep 26, 10:44 PM EST

kalshi

Kalshi

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

Raul Rosas Jr

View
100%
41%
Yes 100¢No 0¢
100¢
N/A
$4,380,998
N/A
N/A
$2,457,393
Settled
Yes
kalshi

Raoni Barcelos

View
0%
41%
Yes 0¢No 100¢
100¢
N/A
$2,884,200
N/A
N/A
$2,096,391
Settled
No
Total markets: 2

Intro

This market tracks whether Raoni Barcelos will win the professional MMA fight against Raul Rosas Jr scheduled for September 26, 2026. Currently, Kalshi gives Raoni Barcelos a 61.0% probability of winning, while Raul Rosas Jr is at 38.0%. The market will resolve based on the outcome of the Rosas Jr vs Barcelos fight, as determined by judges’ scorecards, referee stops, or submission, according to Kalshi. Keep a close eye on the fighters’ weight class and training updates leading up to the scheduled fight date of September 26, 2026, as these could significantly impact the outcome.

Kalshi

If Raul Rosas Jr wins the Rosas Jr vs Barcelos professional MMA fight originally scheduled for Sep 26, 2026, then the market resolves to Yes. If Raoni Barcelos wins the Rosas Jr vs Barcelos professional MMA fight originally scheduled for Sep 26, 2026, then the market resolves to Yes.

Frequently asked questions

Prediction market odds often reflect the wisdom of the crowd, potentially differing from traditional sportsbook odds. Sportsbooks set lines based on their own models and risk management, while this market aggregates the beliefs of many individual traders. If a significant number of people believe a sportsbook is mispricing the fight, they can take a position in this market, driving the odds closer to their collective assessment. It’s common to see discrepancies, especially early in the betting cycle, as prediction markets can incorporate information that sportsbooks haven’t fully accounted for.

On Kalshi, this market is priced through a continuous double auction, meaning traders buy and sell contracts representing different outcomes of the Rosas Jr vs Barcelos fight. The price of each contract reflects the probability of that outcome occurring, as perceived by the market participants. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information becomes available, the prices adjust dynamically. This creates a real-time assessment of the fight’s likely result, driven entirely by supply and demand among traders on Kalshi.

This market resolves around Sep 27, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the Rosas Jr vs Barcelos fight as declared by the relevant sanctioning body. The market will determine which outcome – a win for Rosas Jr, a win for Barcelos, or a draw – has occurred. Traders holding contracts for the winning outcome will receive a payout, while those holding contracts for losing outcomes will not.

Several factors could influence this market before the fight takes place. News regarding injuries to either fighter, changes in their training regimens, or even pre-fight press conference dynamics could all shift trader sentiment. Unexpected announcements about weight class adjustments or rule changes could also have an impact. Public opinion, as reflected in polls or analyst predictions, might also play a role, though the market isn’t directly tied to those sources. Any significant development related to the Rosas Jr vs Barcelos fight has the potential to move the market.