The Polymarket contract “Will Russia capture Kostyantynivka by July 31?” saw its YES price climb 30.0 percentage points over the past 24 hours, rising from 32.5% to 62.5% on July 12. This surge reflects a significant shift in market sentiment toward the likelihood of Russian forces capturing the city before the deadline.
Whale activity aligned with this price move, as large traders contributed a net $24K into YES contracts during the same period. Whale buy volume totaled $45K, outpacing $21K in sell volume, across 94 unique whales. This flow confirms strong buying pressure from major participants rather than a divergence between price and whale behavior.
Notably, the Polymarket YES price of 62.5% differs from Polydata’s on-chain mid-price of 43.5%, suggesting some discrepancy between the live market price and underlying on-chain data.
The combined sharp price increase and whale inflow point to growing conviction among large traders about the event’s probability. This coordinated move highlights a notable shift in market expectations, signaling rising confidence in the outcome priced by this contract.
| Market | Will Russia capture Kostyantynivka by July 31? |
|---|---|
| Market ID | 2608935 |
| 24h price change | +30.0 pp |
| YES now (PM Breaking) | 62.5% |
| YES ~24h ago (est.) | 32.5% |
| YES (Polydata overview) | 43.5% |
| Whale net flow (24h) | $24K |
| Whale buy / sell (24h) | $45K / $21K |
| Unique whales (24h) | 94 |
| Volume 24h (PM) | $42K |
| Unique traders (Polydata) | 560 |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-12. Data: Polydata API v3. On-chain figures are public. Realized PnL is computed over resolved markets only and excludes open positions, so it is conservative versus the Polymarket UI. This is not investment advice.