The Polymarket contract “Will the US announce a blockade on Iran by July 31?” saw its YES price climb sharply by 21.0 percentage points in the last 24 hours, rising from 21.5% to 42.5% as of the 2026-07-12 snapshot. This substantial repricing reflects a notable shift in market sentiment on the likelihood of a US blockade announcement within the next three weeks.
Whale traders were clearly active and aligned with this move, injecting a net $148K into YES contracts over the same period. Their buy volume reached $284K against $136K in sells, spread across 274 unique whales. This concentrated whale demand accompanied total 24-hour Polymarket volume of $269K, indicating that large players drove much of the day’s activity.
Despite the Polymarket YES price reaching 42.5%, Polydata’s on-chain mid-price overview recorded a lower figure of 25.5%, showing some divergence between exchange prices and on-chain data snapshots. Overall lifetime market volume stands at $845K, with 872 unique traders participating, illustrating a moderately active market environment.
The alignment of whale flow with price action underscores a coordinated shift rather than isolated speculation, marking this contract as a focal point for geopolitical risk assessment in prediction markets.
| Market | Will the US announce a blockade on Iran by July 31? |
|---|---|
| Market ID | 2643405 |
| 24h price change | +21.0 pp |
| YES now (PM Breaking) | 42.5% |
| YES ~24h ago (est.) | 21.5% |
| YES (Polydata overview) | 25.5% |
| Whale net flow (24h) | $148K |
| Whale buy / sell (24h) | $284K / $136K |
| Unique whales (24h) | 274 |
| Volume 24h (PM) | $269K |
| Unique traders (Polydata) | 872 |
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.