The market for “Will Russia capture Kostyantynivka by July 31?” saw a significant 25.0 percentage point decline in its YES contract price over the past 24 hours, dropping from 62.5% to 37.5% on Polymarket. This sharp fall in implied probability contrasts with whale trading activity, which flowed $27K net into YES contracts during the same period.
Whales engaged in $51K of buy volume and $24K of sell volume across 90 unique whale traders, signaling a substantial commitment to the YES side even as the broader market price dropped. Total 24-hour volume on Polymarket for this market was $44K, while lifetime market volume stands at $237K with 623 unique traders participating.
Notably, Polymarket’s YES price at 37.5% diverges from Polydata’s on-chain mid-price of 29.0%, indicating some discrepancy between the platform price and the blockchain-derived price midpoint. The divergence between whale flow and price movement suggests that while general market sentiment shifted sharply against Russia capturing Kostyantynivka by the July 31 deadline, whales increased their exposure to that outcome.
This opposing dynamic between whale buying and declining market odds reflects a nuanced picture: retail or general market participants are marking down the probability aggressively, while large traders are accumulating YES positions. Such flow-price divergence can signal differing assessments of event likelihood or strategic positioning among whales compared to the wider market.
| Market | Will Russia capture Kostyantynivka by July 31? |
|---|---|
| Market ID | 2608935 |
| 24h price change | +25.0 pp |
| YES now (PM Breaking) | 37.5% |
| YES ~24h ago (est.) | 62.5% |
| YES (Polydata overview) | 29.0% |
| Whale net flow (24h) | $27K |
| Whale buy / sell (24h) | $51K / $24K |
| Unique whales (24h) | 90 |
| Volume 24h (PM) | $44K |
| Unique traders (Polydata) | 623 |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-13. 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.