TOTAL VOLUME:

$134b

24H VOL:

$103,397,351

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,410,176,180

399,592

Markets across

30,097

events

MATCHED EVENTS:

2,622

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
PortlandFire vs. Chicago Sky
kalshi
polymarket

PortlandFire vs. Chicago Sky

Volume:
$321,515

Spread -4.5

 - Polymarket

Spread -4.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 27, 2026

Closed: Jun 26, 7:30 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Spread -4.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$75,563
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$55,426
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 173.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$15,506
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 174.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$9,740
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 172.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$5,829
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -6.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$619
N/A
N/A
N/A
Settled
Yes
polymarket

PortlandFire vs. Chicago Sky

View
0%
Yes 0¢No 100¢
—
N/A
$158,746
N/A
N/A
N/A
Settled
Yes
kalshi

Game goes to overtime

View
0%
Yes 0¢No 100¢
100¢
N/A
$86
N/A
N/A
$85
Settled
No
Total markets: 8

Description

This event group covers the WNBA game between Portland Fire and Chicago Sky scheduled for June 26, 2026 at 7:30 PM ET. Kalshi's market focuses on whether the game goes to overtime, while Polymarket's market resolves on the winner (Portland Fire, Chicago Sky) or handles postponement/cancellation scenarios.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Kalshi and Polymarket measure orthogonal outcomes from the same game. Kalshi resolves on overtime occurrence; Polymarket resolves on match winner. These are complementary, not contradictory, but traders must understand they are betting on different dimensions of the same event.Hero tip: Do not treat these as redundant markets. Kalshi's YES outcome (overtime) is compatible with either Polymarket outcome (PortlandFire or Chicago Sky winner). A single game can resolve YES on Kalshi and to either winner on Polymarket. Polymarket's explicit handling of postponement (market remains open) and cancellation (50-50 resolution) provides more contingency clarity than Kalshi, which is silent on these scenarios.

Critical divergence points:

  • Kalshi: Overtime-binary resolution. Resolves YES if the game goes to overtime, NO if it ends in regulation. Does not specify handling of postponement or cancellation. Key quote: 'If Portland and Chicago go to overtime in the Portland vs Chicago women's professional basketball game originally scheduled for Jun 26, 2026, then the market resolves to Yes.'
  • Polymarket: Winner-based ternary with explicit contingencies. Resolves to PortlandFire or Chicago Sky based on final score (including overtime). Postponed games remain open; canceled games with no make-up resolve 50-50. Key quote: '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.'
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

In the upcoming WNBA game, scheduled for June 26 at 7:30PM ET: If the PortlandFire win, the market will resolve to "PortlandFire". If the Chicago Sky win, the market will resolve to "Chicago Sky". 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. The result will be determined based on the final score including any overtime periods.

Kalshi

If Portland and Chicago go to overtime in the Portland vs Chicago women's professional basketball game originally scheduled for Jun 26, 2026, then the market resolves to Yes.

Frequently asked questions

Prediction markets like Polymarket and Kalshi are driven by peer-to-peer trading rather than bookmaker margins, often resulting in tighter spreads and faster price discovery. Sportsbooks build in a house edge and may move odds more slowly in response to sharp action. This market's odds reflect real-time trader conviction without intermediary markup, making them a useful benchmark for comparing against traditional sportsbook lines. However, prediction markets can be less liquid during off-peak hours, which may widen spreads compared to major sportsbooks during peak betting windows.

Polymarket and Kalshi operate under different regulatory frameworks and user bases, which can create temporary price gaps. Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform also attracts traders with varying risk appetites and information sets, leading to distinct order-book dynamics. Kalshi's focus on binary U.S.-regulated events and Polymarket's broader global audience mean they may weight the same information differently. Arbitrage traders typically exploit these spreads, but latency and withdrawal friction can prevent instant convergence, especially in lower-liquidity markets or near resolution.

Key catalysts include injury announcements to star players, lineup changes, recent team performance trends, and head-to-head historical matchups. Public betting patterns and sharp money flow into either side can also shift prices significantly. Weather conditions, travel schedules, and back-to-back game fatigue may influence trader sentiment. Major sportsbook line moves often precede prediction market adjustments, so monitoring traditional odds can provide early warning signals. Breaking news about roster changes or coaching decisions typically triggers rapid repricing across both platforms.