The Prediction Markets

Yale vs. Penn

Starts in 18 hKickoff
Traded
$8K
Venues
Polymarket, Kalshi
Prices updated
1 min ago
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What the markets expect

Yale 64.6%

Next is O/U 51.5 at 62%. The venues differ most on Yale (Polymarket 63.5%, Kalshi 65%), a 1.5-point gap.

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 2 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Yale
64.6%
Polymarket 63.5%polled, 1 min agoKalshi 65%polled, 2 min agoBest Yes 64¢ on Polymarket, $100 pays $156 (1.56x)
Polymarket
Contract
Yale vs. Penn
Last price
63.5%
As of
Polled 1 min ago
Buy Yes
64¢
Sell Yes
63¢
$100 on Yes pays
$156 (1.56x)
Volume
$725
Trade this on Polymarket
Kalshi
Contract
Yale
Last price
65%
As of
Polled 2 min ago
Buy Yes
65¢
Sell Yes
64¢
$100 on Yes pays
$154 (1.54x)
Volume
$3K
Trade this on Kalshi
Partial parity

Payoffs match in ordinary outcomes; see the rule differences below the table.

No arbitrage: the best bid elsewhere is 64¢, at or below the cheapest ask of 64¢.

O/U 51.5
62%
Polymarket 62%polled, 1 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
O/U 51.5
Last price
62%
As of
Polled 1 min ago
Buy Yes
98¢
Sell Yes
26¢
$100 on Yes pays
$102 (1.02x)
Trade this on Polymarket
Spread: Yale (-1.5)
57%
Polymarket 57%polled, 1 min agoBest Yes 64¢ on Polymarket, $100 pays $156 (1.56x)
Polymarket
Contract
Spread: Yale (-1.5)
Last price
57%
As of
Polled 1 min ago
Buy Yes
64¢
Sell Yes
50¢
$100 on Yes pays
$156 (1.56x)
Trade this on Polymarket
Spread: Yale (-3.5)
55%
Polymarket 55%polled, 1 min agoBest Yes 65¢ on Polymarket, $100 pays $154 (1.54x)
Polymarket
Contract
Spread: Yale (-3.5)
Last price
55%
As of
Polled 1 min ago
Buy Yes
65¢
Sell Yes
45¢
$100 on Yes pays
$154 (1.54x)
Volume
$35
Trade this on Polymarket
Spread: Penn (-1.5)
52.5%
Polymarket 52.5%polled, 1 min agoBest Yes 99¢ on Polymarket, $100 pays $101 (1.01x)
Polymarket
Contract
Spread: Penn (-1.5)
Last price
52.5%
As of
Polled 1 min ago
Buy Yes
99¢
Sell Yes
6¢
$100 on Yes pays
$101 (1.01x)
Trade this on Polymarket
2H Moneyline
50%
Polymarket 50%polled, 1 min ago
Polymarket
Contract
2H Moneyline
Last price
50%
As of
Polled 1 min ago
Buy Yes
—
Sell Yes
—
Trade this on Polymarket
O/U 49.5
50%
Polymarket 50%polled, 1 min agoBest Yes 51¢ on Polymarket, $100 pays $196 (1.96x)
Polymarket
Contract
O/U 49.5
Last price
50%
As of
Polled 1 min ago
Buy Yes
51¢
Sell Yes
49¢
$100 on Yes pays
$196 (1.96x)
Volume
$417
Trade this on Polymarket
Spread: Penn (-10.5)
50%
Polymarket 50%polled, 1 min agoBest Yes 99¢ on Polymarket, $100 pays $101 (1.01x)
Polymarket
Contract
Spread: Penn (-10.5)
Last price
50%
As of
Polled 1 min ago
Buy Yes
99¢
Sell Yes
1¢
$100 on Yes pays
$101 (1.01x)
Trade this on Polymarket
Spread: Yale (-14.5)
49.5%
Polymarket 49.5%polled, 1 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Spread: Yale (-14.5)
Last price
49.5%
As of
Polled 1 min ago
Buy Yes
98¢
Sell Yes
1¢
$100 on Yes pays
$102 (1.02x)
Trade this on Polymarket
Spread: Yale (-5.5)
49%
Polymarket 49%polled, 1 min agoBest Yes 52¢ on Polymarket, $100 pays $192 (1.92x)
Polymarket
Contract
Spread: Yale (-5.5)
Last price
49%
As of
Polled 1 min ago
Buy Yes
52¢
Sell Yes
46¢
$100 on Yes pays
$192 (1.92x)
Trade this on Polymarket
Show 12 more outcomes
Spread: Yale (-10.5)
43.5%
Polymarket 43.5%polled, 1 min agoBest Yes 86¢ on Polymarket, $100 pays $116 (1.16x)
Polymarket
Contract
Spread: Yale (-10.5)
Last price
43.5%
As of
Polled 1 min ago
Buy Yes
86¢
Sell Yes
1¢
$100 on Yes pays
$116 (1.16x)
Trade this on Polymarket
O/U 53.5
37%
Polymarket 37%polled, 1 min agoBest Yes 44¢ on Polymarket, $100 pays $227 (2.27x)
Polymarket
Contract
O/U 53.5
Last price
37%
As of
Polled 1 min ago
Buy Yes
44¢
Sell Yes
30¢
$100 on Yes pays
$227 (2.27x)
Trade this on Polymarket
Penn
36%
Kalshi 36%polled, 2 min agoBest Yes 36¢ on Kalshi, $100 pays $278 (2.78x)
Kalshi
Contract
Penn
Last price
36%
As of
Polled 2 min ago
Buy Yes
36¢
Sell Yes
35¢
$100 on Yes pays
$278 (2.78x)
Volume
$4K
Trade this on Kalshi
O/U 55.5
35.5%
Polymarket 35.5%polled, 1 min agoBest Yes 53¢ on Polymarket, $100 pays $189 (1.89x)
Polymarket
Contract
O/U 55.5
Last price
35.5%
As of
Polled 1 min ago
Buy Yes
53¢
Sell Yes
18¢
$100 on Yes pays
$189 (1.89x)
Trade this on Polymarket
O/U 59.5
31.5%
Polymarket 31.5%polled, 1 min agoBest Yes 53¢ on Polymarket, $100 pays $189 (1.89x)
Polymarket
Contract
O/U 59.5
Last price
31.5%
As of
Polled 1 min ago
Buy Yes
53¢
Sell Yes
10¢
$100 on Yes pays
$189 (1.89x)
Trade this on Polymarket
Spread: Yale (-7.5)
29%
Polymarket 29%polled, 1 min agoBest Yes 57¢ on Polymarket, $100 pays $175 (1.75x)
Polymarket
Contract
Spread: Yale (-7.5)
Last price
29%
As of
Polled 1 min ago
Buy Yes
57¢
Sell Yes
1¢
$100 on Yes pays
$175 (1.75x)
Trade this on Polymarket
O/U 57.5
28%
Polymarket 28%polled, 1 min agoBest Yes 35¢ on Polymarket, $100 pays $286 (2.86x)
Polymarket
Contract
O/U 57.5
Last price
28%
As of
Polled 1 min ago
Buy Yes
35¢
Sell Yes
21¢
$100 on Yes pays
$286 (2.86x)
Trade this on Polymarket
Spread: Penn (-3.5)
22%
Polymarket 22%polled, 1 min agoBest Yes 30¢ on Polymarket, $100 pays $333 (3.33x)
Polymarket
Contract
Spread: Penn (-3.5)
Last price
22%
As of
Polled 1 min ago
Buy Yes
30¢
Sell Yes
14¢
$100 on Yes pays
$333 (3.33x)
Trade this on Polymarket
O/U 61.5
20%
Polymarket 20%polled, 1 min agoBest Yes 27¢ on Polymarket, $100 pays $370 (3.70x)
Polymarket
Contract
O/U 61.5
Last price
20%
As of
Polled 1 min ago
Buy Yes
27¢
Sell Yes
13¢
$100 on Yes pays
$370 (3.70x)
Trade this on Polymarket
Spread: Penn (-5.5)
18.5%
Polymarket 18.5%polled, 1 min agoBest Yes 36¢ on Polymarket, $100 pays $278 (2.78x)
Polymarket
Contract
Spread: Penn (-5.5)
Last price
18.5%
As of
Polled 1 min ago
Buy Yes
36¢
Sell Yes
1¢
$100 on Yes pays
$278 (2.78x)
Trade this on Polymarket
Spread: Penn (-7.5)
12.5%
Polymarket 12.5%polled, 1 min agoBest Yes 20¢ on Polymarket, $100 pays $500 (5.00x)
Polymarket
Contract
Spread: Penn (-7.5)
Last price
12.5%
As of
Polled 1 min ago
Buy Yes
20¢
Sell Yes
5¢
$100 on Yes pays
$500 (5.00x)
Trade this on Polymarket
Spread: Penn (-14.5)
12%
Polymarket 12%polled, 1 min agoBest Yes 23¢ on Polymarket, $100 pays $435 (4.35x)
Polymarket
Contract
Spread: Penn (-14.5)
Last price
12%
As of
Polled 1 min ago
Buy Yes
23¢
Sell Yes
1¢
$100 on Yes pays
$435 (4.35x)
Trade this on Polymarket

No cross-venue arbitrage right now: on every matched outcome, the best bid on one venue is at or below the cheapest ask on the other. Find markets with open spreads

Same bet: both pay the winner of the game

Ties: both venues pay 50/50.

Only differs in an edge case

  • If the game is postponed: Kalshi resolves to a fair price if the game does not start within 48 hours of the scheduled time; Polymarket stays open until the game is played and resolves 50-50 only if it is cancelled with no make-up.
Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: ncaa.com
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: Kalshi using information originating from the NCAA, ESPN
Show full rule comparison
  • If the game is postponed: Kalshi resolves to a fair price if the game does not start within 48 hours of the scheduled time; Polymarket stays open until the game is played and resolves 50-50 only if it is cancelled with no make-up.
  • Ties: both venues pay 50/50.
  • Trading closes Oct 23, 2026, 11:00 PM UTC on Polymarket and Oct 25, 2026, 11:00 PM UTC on Kalshi.

Summarized from each venue’s published rules; the venue’s own rules page is the final word.

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • Yale
  • O/U 51.5
  • Spread: Yale (-1.5)

Live prices for Yale

What it costs to buy Yes, what you would get selling it, and the last trade on each exchange, updating as orders change. Hover a status for timing details.

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Combined depth · both venues

Loading both order books…

Polymarket

Open on Polymarket ↗

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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Kalshi

Open on Kalshi ↗

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

$
Buy

Loading both order books…

Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (sports rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Yale vs. Penn". Yale leads at 64.6%. Next is O/U 51.5 at 62%. $8K has traded across 22 outcomes on Kalshi and Polymarket. The market is expected to resolve by Oct 23, 2026.

In the upcoming college football game between Yale and Penn, scheduled for October 23 at 7:00PM ET: This market will resolve to "Yale" if Yale win the game. This market will resolve to "Penn" if Penn win the game. Overtime is included if played. If the game ends in a tie, this market will resolve 50-50. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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