All comparisons

Rolex Paris Masters: Quentin Halys vs Arthur Fery: Kalshi vs Polymarket odds

Quentin Halys: 42¢ on Kalshi, 56¢ on Polymarket. Kalshi is 14¢ cheaper for "Yes".

Rolex Paris Masters: Quentin Halys vs Arthur Fery

Kalshi vol $173KPolymarket 24h $105K
OutcomeKalshiPolymarketGap
Quentin Halys42¢56¢+14¢
Arthur Fery57¢44¢-13¢
Trade on Kalshi Trade on Polymarket

Why the same contract has two prices

Kalshi and Polymarket run separate order books with different traders, so prices drift apart. Fees differ, and liquidity differs by market. Check each exchange's resolution rules before treating a gap as free money: small wording differences can mean the contracts are not identical.

Where can you trade it?

Kalshi and Polymarket US availability depends on your state, and sports contracts are blocked in some states. Check your state.

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