Polymarket has reduced the implied probability of a two-week U.S.-Iran ceasefire before August 31 to roughly 51%–52%, as traders reassess whether a full 14-day pause in qualifying U.S. military action can be sustained.

The contract has declined by about three percentage points over the past week. According to reports, more than $2.5 million has entered the market, reflecting heightened attention to the diplomatic and economic consequences of the conflict as renewed strike risks continue to affect crypto markets and other risk-sensitive assets. As with other prediction markets, the displayed probability reflects the price at which participants are currently willing to trade, making it a real-time gauge of expectations rather than an official assessment.

Polymarket’s Contract Rules Set a Narrow Ceasefire Standard

The Polymarket market does not resolve based solely on whether Washington and Tehran announce or discuss a formal diplomatic agreement. Instead, the contract resolves “Yes” only if there are 14 consecutive days without a qualifying U.S. military strike inside Iranian territory.

Under those rules, any qualifying attack would restart the 14-day count and reduce the remaining time available before the August 31 deadline. That structure helps explain why the market’s U.S.-Iran ceasefire odds remain close to an even split despite continued diplomatic contacts. It also means the contract is tracking a specific operational condition, not the broader status of negotiations or regional tensions.

President Donald Trump said on July 24 that discussions were still active, although he also said Iran was not ready for a final agreement. At the same time, military activity has continued to complicate the diplomatic process.

Reports have cited expanded U.S. operations against Iranian military infrastructure, including targets beyond coastal areas. Iran has also responded with attacks affecting shipping lanes and regional U.S. facilities. Those developments have kept the Polymarket contract highly sensitive to each reported military action.

Strike Risks Weigh on Oil, Equities, and Crypto Markets

Energy markets have shown some of the clearest reactions during previous escalations. Brent crude previously climbed above $90 per barrel as disruptions around the Strait of Hormuz raised concerns about global oil supplies.

Higher oil prices can raise inflation expectations, increase corporate costs, and complicate interest-rate policy. Equity markets have also weakened during earlier periods of U.S.-Iran confrontation as investors shifted toward more defensive positions.

Technology and semiconductor shares have faced selling pressure as capital moved into safer assets. Crypto markets followed a similar risk-off pattern during the initial wave of geopolitical uncertainty.

Bitcoin has increasingly moved in line with broader macro assets during major security shocks. Ethereum and smaller cryptocurrencies, however, have recorded larger swings because they depend more heavily on speculative capital flows.

The U.S. dollar has generally strengthened during periods of elevated geopolitical risk. A stronger dollar can tighten financial conditions and create additional pressure on both equities and crypto markets. For digital assets, the relevance of the U.S.-Iran ceasefire market is therefore tied less to direct exposure and more to its role as a signal for risk appetite, energy-price concerns, and dollar liquidity conditions.

Polymarket probabilities represent collective market expectations rather than guaranteed outcomes. With the contract hovering near 51%, traders remain divided over whether a two-week pause in qualifying U.S. military action will be achieved before the August 31 deadline.