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Eastern Michigan vs Western Michigan odds: Kalshi vs PolymarketUpcoming

College football, Tue, Nov 17, 6:00 PM ET. The price to buy each team on each venue, updated just now.

TeamKalshiPolymarket
Eastern Michigan19¢19¢
Western Michigan83¢85¢

Green is the cheapest venue for that team. Best ask only, before fees.

The cheapest way to cover both teams is 102¢ (Eastern Michigan on Polymarket, Western Michigan on Kalshi), so there's no gap at these prices. Gaps open and close in minutes.
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What we've seen so far

Biggest price difference: Western Michigan was 2¢ apart: Kalshi 83¢ vs Polymarket 85¢, Sun, Nov 15, 2:24 AM ET.

We didn't see a spread here that paid after fees on Kalshi and Polymarket so far.

From Kalshi and Polymarket prices read about once a minute, Fri, Nov 13, 10:02 PM to Sun, Nov 15, 6:18 AM ET.

On the venues: Kalshi · Polymarket

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Why are the prices different?

Kalshi and Polymarket are separate exchanges with different traders and fees, so Eastern Michigan and Western Michigan can trade at different prices on each for minutes at a time. If buying Eastern Michigan on one venue and Western Michigan on another costs less than $1 after fees, the difference is yours whoever wins, as long as both venues settle the game the same way. Read the step-by-step guide and the risks.

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Prices are each venue's best ask: the price to buy that team, before fees, at whatever size is for sale. A price of 45¢ means the market puts it at about 45%; each contract pays $1 if that team wins. Venues can settle a postponed or suspended game differently; check both venues' rules before trading. Not financial advice. ArbTrader isn't affiliated with Kalshi and Polymarket.