The Polymarket contract “Will the US announce a blockade on Iran by August 31?” saw a notable 15.0 percentage point drop in its YES price over the past 24 hours, falling from 58.0% to 43.0%. This significant repricing indicates a sharp decline in market confidence that the US will announce a blockade within the timeframe.
Contrary to the downward price movement, whale activity diverged from the tape, with a net flow of $16K into YES contracts. Whales bought $28K worth of YES shares while selling $11K, across 70 unique whale wallets. This divergence between whale flow and price suggests large traders are positioning against the prevailing market sentiment.
Overall 24-hour volume for the market was $26K, with lifetime volume reaching $161K and 293 unique traders participating. Notably, the Polymarket Breaking feed price of 43.0% differs from Polydata’s on-chain mid price of 35.5%, highlighting some disparity in price sources.
The combined picture of a sharp price drop amid strong whale buying points to a market grappling with conflicting signals about US policy toward Iran. While the broader market is pulling back on the blockade probability, whales appear to be betting on a rebound or continuation of the blockade scenario.
| Market | Will the US announce a blockade on Iran by August 31? |
|---|---|
| Market ID | 2821347 |
| 24h price change | +15.0 pp |
| YES now (PM Breaking) | 43.0% |
| YES ~24h ago (est.) | 58.0% |
| YES (Polydata overview) | 35.5% |
| Whale net flow (24h) | $16K |
| Whale buy / sell (24h) | $28K / $11K |
| Unique whales (24h) | 70 |
| Volume 24h (PM) | $26K |
| Unique traders (Polydata) | 293 |
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.