The market “Will 30 ships transit the Strait of Hormuz on any day by July 31, 2026?” saw its YES price collapse by 51.6 percentage points over 24 hours, from 92.7% down to 41.0% according to Polymarket’s Breaking feed on July 15.
This dramatic repricing occurred despite whale activity that diverged from the price move. Large traders collectively bought $69K and sold $32K in YES contracts, resulting in a net $37K inflow toward YES positions. This contrasts with the sharp price decline, signaling a disconnect between whale flow and the market’s directional shift.
Unique whale participation was robust, with 95 distinct whales trading during the period. Overall 24-hour volume on Polymarket for this contract reached $52K, contributing to a lifetime market volume of $114K and involving 204 unique traders.
Notably, the Polymarket Breaking YES price of 41.0% is substantially lower than the Polydata on-chain mid price of 96.4%, highlighting a significant discrepancy between the two pricing sources.
The combined picture of a steep price drop accompanied by whale buying suggests conflicting signals about the likelihood of 30 ships transiting the Strait of Hormuz by the deadline. The market appears to be reassessing the event’s probability sharply lower, while whale flow indicates some participants maintain conviction in the YES outcome.
| Market | Will 30 ships transit the Strait of Hormuz on any day by July 31, 2026? |
|---|---|
| Market ID | 2820499 |
| 24h price change | +51.6 pp |
| YES now (PM Breaking) | 41.0% |
| YES ~24h ago (est.) | 92.7% |
| YES (Polydata overview) | 96.4% |
| Whale net flow (24h) | $37K |
| Whale buy / sell (24h) | $69K / $32K |
| Unique whales (24h) | 95 |
| Volume 24h (PM) | $52K |
| Unique traders (Polydata) | 204 |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-15. 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.