UFC 331: Gable Steveson vs. Sean Sharaf (Heavyweight, Prelims) odds: Kalshi vs Polymarket
Sat, Sep 19, 2026, 5:00 PM ET · UFC fights · $215 traded in 24h across both venues.
Gable Steveson: Kalshi 91¢ vs Polymarket 92¢, -1.0 pp
Mid prices. A price is the market's probability: 91¢ means 91%. The gap is Kalshi minus Polymarket in percentage points.
Two separate exchanges, two accounts. Links may carry a referral code, which never changes what is shown. Disclosures.
-2.45¢ per $1, after fees
Buy Gable Steveson @ Kalshi 91¢, Sean Sharaf @ Polymarket 10¢
All outcomes
| Outcome | Kalshi bid / ask | Polymarket bid / ask | Gap |
|---|---|---|---|
| Gable Steveson | 90¢ / 91¢ | 90¢ / 93¢ | -1.0 pp |
| Sean Sharaf | 7¢ / 10¢ | 7¢ / 10¢ | 0.0 pp |
Price history, last 3 days
How this is matched
Games are matched across the two exchanges by league, team codes and date. Polymarket prices come from its live order book, Kalshi from its public API. Refreshed every 45 seconds.
What this is not
Read-only. Nothing here places or routes orders and nothing is advice. Fees, slippage and the time it takes to move money between venues are not in these numbers.