UFC Fight Night: Arnold Allen vs. Melquizael Costa (Featherweight, Main Card)
What resolves this contract
This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026. It will resolve to "Melquizael Costa" if Melquizael Costa 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 May 30, 2026, this market will resolve "50-50." The resolution source for this market will be official information from the UFC.
How to read the price
Prediction market prices are expressed in cents on the dollar. A YES contract trading at 53¢ means the market is pricing in a 53.0% implied probability of the event resolving YES. If resolution comes back YES, the contract pays $1. If NO, it pays $0.
Volume vs. open interest
Total traded volume ($97,328) reflects every buy and sell across the life of this contract. Open interest ($49,797) is the dollar value of positions currently held by traders. Deep liquidity and wide open interest are the two signals that the quoted price is reliable.
Where to trade this market
This contract is listed on Polymarket. PicksByOdds does not accept deposits, execute trades, or offer brokerage. We publish the data; you decide what to do with it.
Markets in the same story
| Market | YES | Volume |
|---|---|---|
| Will Amanda Anisimova be the 2026 Women’s Wimbledon Winner? | 5¢ | $999,217 |
| Will the Colorado Rockies win the 2026 World Series? | 1¢ | $994,017 |
| Will the Miami Marlins win the 2026 World Series? | 1¢ | $960,695 |
Common questions about this market
How is this market resolved?
This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026. It will resolve to "Melquizael Costa" if Melquizael Costa 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 May 30, 2026, this market will resolve "50-50." The resolution source for this market will be official information from the UFC.
When does this contract expire?
This contract closes on 2026-05-17, 2 days from now. After close, the final outcome is determined per the resolution rules above, and contracts settle at $1 (winning side) or $0 (losing side).
What happens if I buy YES at 53¢?
If the event resolves YES, each YES contract pays $1 , a profit of 47¢ per dollar risked. If it resolves NO, the contract pays $0 and the full 53¢ is lost. Current market price implies a 53.0% probability of YES.
Where is this market listed?
This contract is listed on Polymarket. PicksByOdds aggregates and displays public market data; we do not broker trades or custody funds.
How reliable is the quoted price?
This market has $97,328 in total traded volume and $49,797 in open interest. Deeper liquidity generally means tighter spreads and more reliable implied probabilities. Prices refresh multiple times per day.