KalshiOtherFinalized
Raul Rosas Jr wins
99¢
Quick answers
- Where is "Raul Rosas Jr wins" cheaper right now?
- Kalshi last trade 99¢. No matched twin on another venue, so there is no cross-venue price to compare.
- When does "Raul Rosas Jr wins" settle?
- Closes 2026-09-27. Pays Yes when: 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.
Odds history
167 archived bid/ask quotes for "Raul Rosas Jr wins" on Kalshi, 2026-09-21 to 2026-09-27.
How this market settles
- Pays Yes when
- 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.
- When
- Closes 2026-09-27.
Read the full rules Kalshi publishes
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.
The following market refers to the Rosas Jr vs Barcelos professional MMA fight originally scheduled for Sep 26, 2026. If this fight is postponed or delayed, the market will remain open and close after the rescheduled fight has finished (within two weeks). If the fight is declared a tie or no contest, the market will resolve to 50/50 for both fighters. If the fight is cancelled or rescheduled to over two weeks away, the market will resolve to a fair price in accordance with the rules. This market and these products have not been endorsed by Zuffa LLC, d/b/a Ultimate Fighting Championship, UFC. Any references to the “UFC,” or any other associated marks are descriptive only, and do not indicate an endorsement of this product or any affiliation between Zuffa and Kalshi.
What this bet really costs you
On $100 at 99¢ you pay $0.07 in fees on Kalshi
0.07¢ per contract · 101 contracts
On $100 at 99¢ you pay $0.05 in fees on Polymarket US
0.05¢ per contract · 101 contracts
Polymarket rate read from the catalog for sports_fees_v3 (12,420 markets in a sample of 20,000 rows drawn from 16,521,011 in the archive). Kalshi's rate is its published general schedule; the PDF has been rate-limiting fetches, so it is documented rather than verified.
Exchange-side taker fees per each venue's published formula (rate × contracts × price × (1 − price)); contracts = stake ÷ price, rounded down to whole contracts. Fees peak at 50¢ and shrink toward the extremes. Most quoted cross-venue “arbs” are negative-EV after these fees; the taker-fee breakeven on a Kalshi/Polymarket pair is roughly 3.5–4¢.
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