The YES contract on the Polymarket question “US x Iran diplomatic meeting by July 31, 2026?” fell 20.0 percentage points in the past 24 hours, sliding from an estimated 54.5% to 34.5% as of July 12. This sharp repricing contrasts with whale activity, which saw $41K of net flow into YES during the same period, supported by $71K in whale buy volume against $30K in sells from 116 unique whales.
The divergence between whale flow and price movement is notable. While the market price dropped significantly, large investors were increasing their exposure to the YES side, signaling a disconnect between the tape and whale sentiment. Total 24-hour volume on Polymarket was $58K, a figure close to the whale buy volume but dwarfed by the market’s lifetime volume of $608K and participation from 995 unique traders.
Adding complexity, the Polymarket Breaking YES price of 34.5% notably differs from the Polydata on-chain mid-price of 57.0%, highlighting discrepancies between off-chain market prices and on-chain data.
The flow-price divergence signals a nuanced market dynamic rather than a straightforward consensus shift on the likelihood of a US-Iran diplomatic meeting by the end of July 2026.
| Market | US x Iran diplomatic meeting by July 31, 2026? |
|---|---|
| Market ID | 2646850 |
| 24h price change | +20.0 pp |
| YES now (PM Breaking) | 34.5% |
| YES ~24h ago (est.) | 54.5% |
| YES (Polydata overview) | 57.0% |
| Whale net flow (24h) | $41K |
| Whale buy / sell (24h) | $71K / $30K |
| Unique whales (24h) | 116 |
| Volume 24h (PM) | $58K |
| Unique traders (Polydata) | 995 |
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.