The market question “Will 30 ships transit the Strait of Hormuz on any day by July 31, 2026?” saw its YES contract price plunge 61.3 percentage points over the past 24 hours, falling from 93.6% to 32.4% on Polymarket’s Breaking feed as of July 15, 2026.
This sharp drop in implied probability contrasts with whale behavior, which saw net inflows of $41K into YES contracts during the same period. Whale buy volume reached $81K, while sell volume was $40K, across 96 unique whale traders. Total 24-hour trading volume on the market was $51K, part of a lifetime market volume of $132K with 213 unique traders overall.
Notably, the whale flow diverges from the price move, as highlighted by the flow divergence flag. This indicates that while the broader market sharply reduced the odds of 30 ships transiting the Strait of Hormuz by the deadline, large traders increased their exposure to the YES outcome.
Adding to the complexity, the Polymarket Breaking YES price (32.4%) differs significantly from the Polydata on-chain mid price (96.4%), suggesting discrepancies between off-chain price feeds and on-chain data.
The combination of a steep price decline and substantial whale buying points to conflicting market signals, with retail or smaller traders pushing odds lower while whales accumulate YES contracts.
| Market | Will 30 ships transit the Strait of Hormuz on any day by July 31, 2026? |
|---|---|
| Market ID | 2820499 |
| 24h price change | +61.3 pp |
| YES now (PM Breaking) | 32.4% |
| YES ~24h ago (est.) | 93.6% |
| YES (Polydata overview) | 96.4% |
| Whale net flow (24h) | $41K |
| Whale buy / sell (24h) | $81K / $40K |
| Unique whales (24h) | 96 |
| Volume 24h (PM) | $51K |
| Unique traders (Polydata) | 213 |
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.