WNBA odds on Kalshi vs Polymarket
WNBA game and series markets across both venues. Right now there are 105 open WNBA markets — 94 on Kalshi, 11 on Polymarket — carrying $152k of volume in the last 24 hours.
Open WNBA markets, by volume
| Market | Venue | Yes | 24h volume | Closes |
|---|---|---|---|---|
| Phoenix vs Portland — Phoenix | kalshi | 56¢ | $52k | 09-18 05:00 UTC |
| Phoenix Mercury vs. Portland Fire | polymarket | 58¢ | $18k | 09-18 02:00 UTC |
| Phoenix vs Portland — Portland | kalshi | 44¢ | $11k | 09-18 05:00 UTC |
| Connecticut vs Atlanta — Atlanta | kalshi | 92¢ | $10k | 09-18 02:30 UTC |
| Washington vs Chicago — Chicago | kalshi | 48¢ | $9k | 09-18 03:00 UTC |
| Phoenix Mercury vs. Portland Fire: O/U 172.5 | polymarket | 46¢ | $6k | 09-18 02:00 UTC |
| Washington Mystics vs. Chicago Sky | polymarket | 53¢ | $5k | 09-18 00:00 UTC |
| Washington vs Chicago — Washington | kalshi | 52¢ | $5k | 09-18 03:00 UTC |
| Los Angeles vs Dallas — Dallas | kalshi | 76¢ | $5k | 09-18 03:00 UTC |
| Spread: Atlanta Dream (-14.5) | polymarket | 55¢ | $5k | 09-17 23:30 UTC |
| Phoenix Mercury vs. Portland Fire: O/U 173.5 | polymarket | 45¢ | $4k | 09-18 02:00 UTC |
| Las Vegas vs Seattle — Las Vegas | kalshi | 82¢ | $3k | 09-18 05:00 UTC |
| Phoenix vs Portland: Total — Over 172.5 points scored | kalshi | 47¢ | $2k | 09-18 05:00 UTC |
| Spread: Phoenix Mercury (-1.5) | polymarket | 55¢ | $2k | 09-18 02:00 UTC |
| Spread: Phoenix Mercury (-2.5) | polymarket | 51¢ | $2k | 09-18 02:00 UTC |
| Los Angeles vs Dallas: Total — Over 174.5 points scored | kalshi | 56¢ | $1k | 09-18 03:00 UTC |
| Portland vs Golden State — Golden State | kalshi | 86¢ | $1k | 09-19 05:00 UTC |
| Spread: Washington Mystics (-3.5) | polymarket | 46¢ | $1k | 09-18 00:00 UTC |
| Indiana vs Toronto — Indiana | kalshi | 86¢ | $1k | 09-19 02:30 UTC |
| Las Vegas Aces vs. Seattle Storm | polymarket | 81¢ | $986 | 09-18 02:00 UTC |
The 20 most active of 105, by 24h volume across both venues, refreshed every few minutes. A market listed on only one venue has no cross-venue price to compare against — which is true of most of them.
What two venues' prices are worth
A gap between Kalshi and Polymarket on the same WNBA market is usually fees, depth, or two contracts that settle differently — not free money. The arbitrage guide shows today's gaps before and after fees, and the fee page shows why the cost peaks near 50¢.
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