Penn Quakers vs Illinois Fighting Illini odds: Kalshi vs PolymarketIn progress

College basketball, Thu, Nov 5, 8:30 PM ET, in progress. The price to buy each team on each venue, updated just now.

Team	Kalshi	Polymarket
Penn Quakers	2¢	4¢
Illinois Fighting Illini	99¢	97¢

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

Buying Penn Quakers on Kalshi at 2¢ and Illinois Fighting Illini on Polymarket at 97¢ costs 99¢ for a $1 payout whoever wins, before fees. Whether that still pays after both venues' fees, at the size for sale, is what ArbTrader checks live.
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What we've seen so far

Biggest price difference: Illinois Fighting Illini was 2¢ apart: Kalshi 99¢ vs Polymarket 97¢, Thu, Nov 5, 5:54 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, Sun, Nov 1, 11:32 PM to Thu, Nov 5, 7:30 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 Penn Quakers and Illinois Fighting Illini can trade at different prices on each for minutes at a time. If buying Penn Quakers on one venue and Illinois Fighting Illini 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.