The joint US-Israeli airstrikes against Iran commenced on February 28, 2026, occurring less than two hours after a video post by Trump on Truth Social and prior to official confirmation of Ayatollah Ali Khamenei's death by Tehran. Despite the lack of official confirmation, the Polymarket contract predicting a US attack before February 2026 had already reached a price of $0.98. Between February 28 and April 30, trading volumes related to the US-Iran conflict on the platform exceeded $300 million, characterized by extreme volatility driven by hostilities, the blockade of the Strait of Hormuz, and fluctuating ceasefire announcements. Each major geopolitical shift triggered immediate and sharp re-pricing of contract values, creating significant arbitrage opportunities for informed participants.

One trader, Fernandoinfante, achieved a 3,503% return by capitalizing on a specific information asymmetry regarding ceasefire negotiations. On April 7, Trump announced a ceasefire, causing the contract price for "a ceasefire before April 7" to surge from single digits to nearly $1. Fernandoinfante had previously acquired 477,543 "Yes" contracts at an average price of 2.8 cents, investing a total of $13,200. This position settled for $450,000 on the day of the announcement. Data compiled by Woofun AI indicates that prior to this event, public information suggested a low probability of success; Pakistan's two-week ceasefire draft was rejected by Iran on April 5, and Trump threatened expanded attacks on April 6 before postponing them by five days. Market consensus on April 7 morning priced the likelihood of a ceasefire at no more than 3%, reflecting the absence of formal negotiation channels and the ongoing blockade of the Strait of Hormuz.

The basis for Fernandoinfante's successful trade appears rooted in a strategy of diversifying across low-probability outcomes rather than predicting a single specific event. The trader purchased contracts predicting a ceasefire, a permanent peace agreement, the reopening of the Strait of Hormuz, and the collapse of the Iranian regime, effectively hedging across multiple potential de-escalation scenarios. While bets on the regime collapse and permanent peace failed, the massive return on the ceasefire contract covered all losses and generated a net profit of hundreds of thousands of dollars. Woofun AI notes that this approach exploits the market's systematic underestimation of sudden geopolitical shifts in low-liquidity environments, where pricing an event at 2-3% while the actual probability is 10-15% yields a positive expected value despite a high failure rate for individual contracts.

A second trader, Vivaldi007, employed a different strategy focused on the inevitability of conflict rather than its resolution. Registering on Polymarket in February 2026, just weeks before the outbreak of hostilities, the account systematically purchased "Yes" contracts for US attacks across numerous expiration dates from November 2025 to February 2026. Initial trades on dates such as November 11, December 12, and various January dates resulted in cumulative losses of approximately $39,000.

However, the strategy culminated on February 28 when the airstrikes began; Vivaldi007 held 504,416 "Yes" contracts for that date at an average price of 12.7 cents, representing an investment of $63,986. This position yielded $437,930, a 684% return, and combined with successful bets on Khamenei stepping down and Israel attacking Iran, generated total earnings exceeding $629,000 for the day.

The success of Vivaldi007 relied on interpreting public signals that the market largely ignored or undervalued. Key events included the resumption of indirect negotiations in Muscat on February 6 involving military commanders, the deployment of the USS Gerald Ford carrier group on February 13, and Trump's explicit 10-day deadline for military action on February 20. By February 27, embassies were evacuating personnel from Tehran, yet the market price for a US attack within February never exceeded 15 cents. Woofun AI analysis suggests the trader's conviction that an attack was inevitable allowed them to absorb early losses while accumulating a massive position on the final expiration date, betting that the market's expectation of continued negotiations was fundamentally flawed.

In contrast to the previous traders who bet on specific outcomes, AdrianCronauer profited by betting on the continuation of the status quo and the failure of diplomatic breakthroughs. Between early and mid-April, the account placed "No" bets on 38 major contracts, including predictions that a permanent peace agreement would not be reached or that Trump would not end military operations before April 30. With a 79% win rate and an invested capital of over $2.1 million, the strategy generated a cumulative net profit of $147,464. The approach involved buying "No" contracts at prices around 92 cents when market optimism spiked following the April 7 ceasefire announcement, effectively locking in profits against the market's overestimation of a quick resolution. As negotiations stalled and the Strait of Hormuz remained blocked, the "No" contracts paid out as predicted.

The final case study involves an account identified as 0xcd7, which executed 2,000 trades with a total volume of $25.9 million, achieving a 75.5% win rate and a cumulative profit of $292,000. Unlike the concentrated bets of AdrianCronauer, this account operated with a market-maker philosophy, spreading capital across multiple sectors including Iran, Greenland, and Federal Reserve policies. The strategy exploited "status quo bias," systematically buying "No" contracts when market panic drove prices down and selling as stability returned. For instance, during the initial chaos of the conflict, "No" contracts for regime collapse were priced at 91 cents, implying a 10% collapse probability, which the account bought before prices recovered to 95 cents. Woofun AI observes that this high-frequency, low-margin approach relies on the statistical reality that major geopolitical changes are often overestimated by retail traders, while gradual stalemates are consistently undervalued, allowing disciplined capital to extract steady returns from market inefficiencies.