The market on whether the US will announce a halt in Iran offensive operations by August 31 saw a 15.5 percentage point decline in YES contract price over the past 24 hours, sliding from 80.0% to 64.5%. This shift reflects a significant repricing of the probability that such an announcement will occur within the timeframe.
Notably, this price movement diverged from whale activity on Polymarket. While the YES price dropped sharply, whales increased their net exposure to YES contracts, indicating a disconnect between large traders’ bets and the broader market sentiment. The 24-hour trading volume on the market was $10K, suggesting moderate engagement from all participant levels.
This divergence between whale flow and price action suggests differing interpretations of the likelihood of a US announcement halting Iran’s operations. While the general market re-evaluated the chance downward, large traders maintained or even increased their conviction in the YES outcome.
This tension highlights ongoing uncertainty about US policy moves regarding Iran in the near term.
| Market | US announces halt in Iran offensive operations by August 31? |
|---|---|
| Market ID | 2967838 |
| 24h price change | +15.5 pp |
| YES now (PM Breaking) | 64.5% |
| YES ~24h ago (est.) | 80.0% |
| YES (Polydata overview) | — |
| Whale net flow (24h) | $0 |
| Whale buy / sell (24h) | — / — |
| Unique whales (24h) | — |
| Volume 24h (PM) | $10K |
| Unique traders (Polydata) | — |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-19. 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.