Analytics
Resolved Costoulas on 18 Feb 2026.
The last daily price before settlement had Costoulas at 79.5%. The Costoulas side opened at 62% on 17 Feb 2026. Before it settled, across the 2 daily closes on record from 17 Feb 2026 to 18 Feb 2026, the highest close was 79.5% on 18 Feb 2026 and the lowest 62% on 17 Feb 2026. Its largest one-day move was 18 points up, to 79.5% on 18 Feb 2026. $4.65K traded over the market's life.
14 wallets still hold shares. Winners redeem theirs after settlement, so what is left is mostly the losing side.
Polymarket record as of Feb 20, 12:27 AM UTC
Daily closes of the Costoulas price, Polymarket CLOB, 2 points, 17 Feb 2026 – 18 Feb 2026, chart shows 55%–85%
| Observed | Costoulas price |
|---|---|
| 17 Feb 2026 | 62.0% |
| 18 Feb 2026 | 79.5% |
Winners have redeemed their shares, so most of what is left is the losing side.
| Trader | Outcome | Shares |
|---|---|---|
| Bold Scout BD7E | Foon | 356 |
| Emerald Pioneer D14A | Foon | 307 |
| Bright Horizon 81D6 | Foon | 239 |
| Creative-Vine | Foon | 137.74 |
Open a trader’s name to inspect the wallet’s available P&L, positions and recorded trades, with source dates and coverage. A large position alone does not establish a winning track record.
This market refers on the tennis match between Sofia Costoulas and Astrid Lew Yan Foon in the Les Sables d'Olonne, scheduled for February 18 at 4:00AM ET. This market will resolve to 'Costoulas' if Sofia Costoulas advances against Astrid Lew Yan Foon. This market will resolve to 'Foon' if Astrid Lew Yan Foon advances against Sofia Costoulas. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.
Resolution source: https://www.wtatennis.com/scores
Official listing: polymarket.com/event/wta-costoul-foon-2026-02-18
| Jade Harbor B075 | Foon | 134 |
| Fluffy-Legislator | Foon | 100 |
| Crimson Vector F03A | Foon | 84 |
| paas2 | Foon | 30.01 |
| Misty Horizon F967 | Foon | 15 |
| Annual-Defense | Foon | 12.5 |
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