The Polymarket YES price on the question “US x Iran diplomatic meeting by July 31, 2026?” plunged 27.0 percentage points over 24 hours, sliding from an estimated 60.5% to 33.5% as of July 12, 2026. This significant price drop contrasts sharply with whale activity, which saw a net flow of $41K into YES contracts during the same period. Whales bought $73K and sold $32K, with 115 unique whales participating, indicating that large traders were accumulating YES positions even as the market price moved lower.
The total 24-hour volume on Polymarket for this market was $59K, while lifetime volume reached $598K across 982 unique traders, showing consistent engagement but no immediate alignment between retail and whale sentiment. Notably, the Polymarket Breaking YES price at 33.5% diverges considerably from the Polydata on-chain mid-price of 57.0%, underscoring a discrepancy between on-chain valuation and Polymarket’s live market price.
The split raises questions about market confidence and signals that while broader market pricing has turned sharply against a US-Iran diplomatic meeting by the deadline, whales remain positioned for that outcome. The conflicting signals highlight uncertainty and potential volatility ahead for this contract’s trading trajectory.
| Market | US x Iran diplomatic meeting by July 31, 2026? |
|---|---|
| Market ID | 2646850 |
| 24h price change | +27.0 pp |
| YES now (PM Breaking) | 33.5% |
| YES ~24h ago (est.) | 60.5% |
| YES (Polydata overview) | 57.0% |
| Whale net flow (24h) | $41K |
| Whale buy / sell (24h) | $73K / $32K |
| Unique whales (24h) | 115 |
| Volume 24h (PM) | $59K |
| Unique traders (Polydata) | 982 |
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.