The probability of a US x Iran effective ceasefire by August 14 on Polymarket dropped sharply by 18.0 percentage points within 24 hours, falling from an estimated 53.0% to 35.0% according to the Polymarket Breaking feed on July 17, 2026. This represents a significant revaluation of the likelihood of the ceasefire occurring within the specified timeframe.
Notably, this price decline occurred despite whale trading activity diverging from the price movement. Whale flow did not support the selloff, indicating that large traders were not aggressively exiting YES positions even as the market odds shifted lower. The $33K volume traded over the past day suggests moderate engagement but no overwhelming consensus among participants.
Overall, the combined picture of a steep price decline alongside contrasting whale behavior highlights uncertainty and a possible reassessment of the ceasefire’s feasibility by August 14. Market participants appear split on the implications of recent developments, underscoring the fluidity of outlooks in this high-stakes prediction market.
| Market | US x Iran Effective Ceasefire by August 14? |
|---|---|
| Market ID | 2937526 |
| 24h price change | +18.0 pp |
| YES now (PM Breaking) | 35.0% |
| YES ~24h ago (est.) | 53.0% |
| YES (Polydata overview) | — |
| Whale net flow (24h) | $0 |
| Whale buy / sell (24h) | — / — |
| Unique whales (24h) | — |
| Volume 24h (PM) | $33K |
| Unique traders (Polydata) | — |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-17. 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.