Market comparison

Yale vs. Penn

2 venues · 22 outcome rows · 1 comparable lines · event identity linked · 0 verified parity · active

Kalshi

Open venue ↗

2 outcomes · $8K reported volume

Observed 2m ago

Recorded venue end date: Oct 25, 2026

Polymarket

Open venue ↗

21 outcomes · $1K reported volume

Observed 2m ago

Recorded venue end date: Oct 23, 2026

Check settlement rules before comparing contracts. Matched outcomes may settle differently. These are stored prices; record update times do not certify live quotes. Differences exclude fees and available size.

Known rule differences between venues

Postponement: Kalshi resolves to a fair price if the game does not start within 48 hours of the scheduled time (tennis: not finished within two weeks); Polymarket stays open until the game is played and resolves 50-50 only if it is cancelled with no make-up (UFC/tennis: ~14 days).
Ties and draws in two-way sports (NFL, college football, UFC no-contest): both venues pay 50/50.
Soccer: both settle on 90 minutes plus stoppage time; extra time and penalties excluded.
Tennis: Kalshi requires a ball to be played and pays the winner; Polymarket pays the player who advances, including on retirement. A pre-match walkover is a fair price on Kalshi, 50-50 on Polymarket.
UFC: Kalshi ignores result changes after expiry; Polymarket follows the official UFC result.
Polymarket two-way moneylines are one contract priced on the first-named side; the other side is its complement (recorded as a derived relation, not a link).

A shared identity alone does not make a price difference executable.

Available outcome prices by venue for Yale vs. Penn
Outcome	Kalshi	Polymarket	Difference
Yale Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	66.0% Bid 65.0% · Ask 66.0% Yale Open Kalshi ↗	64.5% Bid 64.0% · Ask 65.0% Yale vs. Penn Open Polymarket ↗	1.5 pp
2H Moneyline Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid — · Ask 100.0% 2H Moneyline Open Polymarket ↗	—
O/U 49.5 Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 49.0% · Ask 51.0% O/U 49.5 Open Polymarket ↗	—
O/U 51.5 Not aligned No persisted outcome identity connects these venue contracts.	—	40.0% Bid 26.0% · Ask 54.0% O/U 51.5 Open Polymarket ↗	—
O/U 53.5 Not aligned No persisted outcome identity connects these venue contracts.	—	40.0% Bid 37.0% · Ask 43.0% O/U 53.5 Open Polymarket ↗	—
O/U 55.5 Not aligned No persisted outcome identity connects these venue contracts.	—	29.5% Bid 10.0% · Ask 49.0% O/U 55.5 Open Polymarket ↗	—
O/U 57.5 Not aligned No persisted outcome identity connects these venue contracts.	—	28.5% Bid 21.0% · Ask 36.0% O/U 57.5 Open Polymarket ↗	—
O/U 59.5 Not aligned No persisted outcome identity connects these venue contracts.	—	30.5% Bid 10.0% · Ask 51.0% O/U 59.5 Open Polymarket ↗	—
O/U 61.5 Not aligned No persisted outcome identity connects these venue contracts.	—	20.5% Bid 13.0% · Ask 28.0% O/U 61.5 Open Polymarket ↗	—
Penn Not aligned No persisted outcome identity connects these venue contracts.	35.0% Bid 33.0% · Ask 35.0% Penn Open Kalshi ↗	—	—
Spread: Penn (-1.5) Not aligned No persisted outcome identity connects these venue contracts.	—	55.0% Bid 12.0% · Ask 98.0% Spread: Penn (-1.5) Open Polymarket ↗	—
Spread: Penn (-3.5) Not aligned No persisted outcome identity connects these venue contracts.	—	23.5% Bid 14.0% · Ask 33.0% Spread: Penn (-3.5) Open Polymarket ↗	—
Spread: Penn (-5.5) Not aligned No persisted outcome identity connects these venue contracts.	—	31.0% Bid 1.0% · Ask 61.0% Spread: Penn (-5.5) Open Polymarket ↗	—
Spread: Penn (-7.5) Not aligned No persisted outcome identity connects these venue contracts.	—	14.0% Bid 5.0% · Ask 23.0% Spread: Penn (-7.5) Open Polymarket ↗	—
Spread: Penn (-10.5) Not aligned No persisted outcome identity connects these venue contracts.	—	49.5% Bid 1.0% · Ask 98.0% Spread: Penn (-10.5) Open Polymarket ↗	—
Spread: Penn (-14.5) Not aligned No persisted outcome identity connects these venue contracts.	—	13.5% Bid 1.0% · Ask 26.0% Spread: Penn (-14.5) Open Polymarket ↗	—
Spread: Yale (-1.5) Not aligned No persisted outcome identity connects these venue contracts.	—	56.0% Bid 50.0% · Ask 62.0% Spread: Yale (-1.5) Open Polymarket ↗	—
Spread: Yale (-3.5) Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 39.0% · Ask 61.0% Spread: Yale (-3.5) Open Polymarket ↗	—
Spread: Yale (-5.5) Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 47.0% · Ask 53.0% Spread: Yale (-5.5) Open Polymarket ↗	—
Spread: Yale (-7.5) Not aligned No persisted outcome identity connects these venue contracts.	—	28.0% Bid 1.0% · Ask 55.0% Spread: Yale (-7.5) Open Polymarket ↗	—
Spread: Yale (-10.5) Not aligned No persisted outcome identity connects these venue contracts.	—	41.0% Bid 1.0% · Ask 81.0% Spread: Yale (-10.5) Open Polymarket ↗	—
Spread: Yale (-14.5) Not aligned No persisted outcome identity connects these venue contracts.	—	32.5% Bid 1.0% · Ask 64.0% Spread: Yale (-14.5) Open Polymarket ↗	—

Yale

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Kalshi

66.0%

Bid 65.0% · Ask 66.0%

Yale

Open Kalshi ↗

Polymarket

64.5%

Bid 64.0% · Ask 65.0%

Yale vs. Penn

Open Polymarket ↗

Price difference 1.5 pp

2H Moneyline

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

50.0%

Bid — · Ask 100.0%

2H Moneyline

Open Polymarket ↗

O/U 49.5

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

50.0%

Bid 49.0% · Ask 51.0%

O/U 49.5

Open Polymarket ↗

O/U 51.5

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

40.0%

Bid 26.0% · Ask 54.0%

O/U 51.5

Open Polymarket ↗

O/U 53.5

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

40.0%

Bid 37.0% · Ask 43.0%

O/U 53.5

Open Polymarket ↗

O/U 55.5

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

29.5%

Bid 10.0% · Ask 49.0%

O/U 55.5

Open Polymarket ↗

O/U 57.5

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

28.5%

Bid 21.0% · Ask 36.0%

O/U 57.5

Open Polymarket ↗

O/U 59.5

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

30.5%

Bid 10.0% · Ask 51.0%

O/U 59.5

Open Polymarket ↗

O/U 61.5

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

20.5%

Bid 13.0% · Ask 28.0%

O/U 61.5

Open Polymarket ↗

Penn

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

35.0%

Bid 33.0% · Ask 35.0%

Penn

Open Kalshi ↗

Polymarket

—

Spread: Penn (-1.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

55.0%

Bid 12.0% · Ask 98.0%

Spread: Penn (-1.5)

Open Polymarket ↗

Spread: Penn (-3.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

23.5%

Bid 14.0% · Ask 33.0%

Spread: Penn (-3.5)

Open Polymarket ↗

Spread: Penn (-5.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

31.0%

Bid 1.0% · Ask 61.0%

Spread: Penn (-5.5)

Open Polymarket ↗

Spread: Penn (-7.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

14.0%

Bid 5.0% · Ask 23.0%

Spread: Penn (-7.5)

Open Polymarket ↗

Spread: Penn (-10.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

49.5%

Bid 1.0% · Ask 98.0%

Spread: Penn (-10.5)

Open Polymarket ↗

Spread: Penn (-14.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

13.5%

Bid 1.0% · Ask 26.0%

Spread: Penn (-14.5)

Open Polymarket ↗

Spread: Yale (-1.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

56.0%

Bid 50.0% · Ask 62.0%

Spread: Yale (-1.5)

Open Polymarket ↗

Spread: Yale (-3.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

50.0%

Bid 39.0% · Ask 61.0%

Spread: Yale (-3.5)

Open Polymarket ↗

Spread: Yale (-5.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

50.0%

Bid 47.0% · Ask 53.0%

Spread: Yale (-5.5)

Open Polymarket ↗

Spread: Yale (-7.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

28.0%

Bid 1.0% · Ask 55.0%

Spread: Yale (-7.5)

Open Polymarket ↗

Spread: Yale (-10.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

41.0%

Bid 1.0% · Ask 81.0%

Spread: Yale (-10.5)

Open Polymarket ↗

Spread: Yale (-14.5)

Not aligned

No persisted outcome identity connects these venue contracts.

Kalshi

—

Polymarket

32.5%

Bid 1.0% · Ask 64.0%

Spread: Yale (-14.5)

Open Polymarket ↗

Prices are shown as percentages of a $1 payout. “pp” means percentage points. A dash means data is unavailable.

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