The US has not imposed a formal naval blockade on Iran despite the escalating conflict, and doing so risks spiking global oil prices. NO is favored at 72%.
The question of whether the US announce a blockade on Iran by December 31 comes as Washington has just wound down its previous naval action against Tehran. Iran said it had exported more than 40 million barrels of crude since the US removed its naval blockade roughly two weeks earlier, with Tehran claiming sales at a 20% premium. Under a memorandum of understanding, Iran agreed to let ships transit the Strait of Hormuz toll-free for 60 days, though it insisted it would retain control over administration of the waterway. The de-escalation followed the broader US-Israel coalition conflict with Iran that began earlier in 2026. [CNBC, Jul 1]
Diplomatic tracks remain fragile. The Institute for the Study of War reported that an Iranian delegation met Qatari officials in Doha on July 1 to press for unfreezing $6 billion in assets and US recognition of Iranian sovereignty over Hormuz, following Qatari contacts with US Special Envoy Steve Witkoff. Yet a senior Iranian diplomat said Tehran would "definitely" collect Hormuz transit fees in defiance of Washington, while Secretary of State Marco Rubio has said any final deal must bar such payments. Analysts caution that Iran retains leverage to re-impose disruption, and its new IRGC Navy chief touted "divine retribution," keeping the risk that the US announce a blockade on Iran by December 31 alive if talks collapse. [Times of Israel, Jul 5]
Market conditions add pressure. More than 20 million barrels of Iranian crude have idled in Asian waters as major buyers stay away, with total oil-on-water estimated at 58 to 68 million barrels, per Kpler data, ahead of the 60-day window's expiry. The structural factor determining whether the US announce a blockade on Iran by December 31 is whether the Hormuz-fee standoff and stalled Doha talks escalate before that MOU lapses, forcing Washington to reinstate naval enforcement. [Insurance Journal, Jul 2]
Polymarket prices this at 28c YES with $118K in volume. Moderate liquidity — use limit orders for positions above $1K to avoid moving the price.
Smart money entered NO at 64c. 100% of NO wallets in profit.
We tracked 1 wallet with positions above $1K on this market. NO wallets entered between 64c.
| Wallet | Category | Side | Amount | P&L | |
|---|---|---|---|---|---|
| 0x162f..8d | MM | NO | $12.5K | +12% |
NO wallets entered at 64c. At current price 28c, all YES buyers are underwater while all NO holders are profitable. Profitable positions rarely sell early — NO side has structural price support.
Polymarket prices YES at 28c with $118K in total volume. Our model estimates fair value at 28c. Model and market are aligned — no pricing discrepancy detected.
| Platform | YES Price | Volume |
|---|---|---|
| Polymarket | 28c | $118K |
| Our Model | 28c | — |