The ICE US Dollar Index tumbled to 98.945 intraday before settling at 99.019, its lowest close in months, after reports that the US and Iran reached a Memorandum of Understanding.
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Dollar slides below 99 as US-Iran ceasefire deal triggers flash crash
The ICE US Dollar Index tumbled to 98.945 intraday before settling at 99.019, its lowest close in months, after reports that the US and Iran reached a Memorandum of Understanding.
The dollar slumped to a fresh multi-month low Thursday after reports of a US-Iran ceasefire deal triggered a flash crash, pushing the ICE Dollar Index as low as 98.945 before it settled at 99.019, down 0.19 percent on the day, according to Bloomberg data. The index swung through a 0.60-point range during the session, with the sharpest move occurring in Asian afternoon trading when news of the agreement broke.
The Bloomberg Dollar Index fell 0.20 percent to 1199.87, with an intraday range of 1206.05 to 1199.41. The dollar weakened broadly, losing 0.16 percent against the yen to trade at 159.26, after swinging between 159.65 and 159.12 during the session. The euro gained ground against the greenback, while commodity-linked currencies such as the Australian and Canadian dollars also strengthened as the geopolitical risk premium embedded in the dollar was rapidly unwound.
The dollar's decline below 99 marks a significant technical breach. The index had found support near 99.50 in recent weeks as geopolitical tensions in the Middle East drove safe-haven flows into the greenback. The last time the dollar traded near current levels was in early 2026, before the escalation between Washington and Tehran pushed the greenback higher. A sustained break below 99 would open the path toward the 98.50 support zone, a level not tested since late 2025, according to technical analysts.
For commodities, a US-Iran rapprochement carries significant implications. Iran holds some of the world's largest oil and gas reserves, and a potential easing of sanctions could increase crude exports. Brent crude, which had been trading with a geopolitical risk premium estimated at $3 to $5 per barrel, could see that premium unwind as supply concerns ease. Gold rebounded following the ceasefire news, according to market reports, as a weaker dollar typically supports the precious metal despite reduced safe-haven demand.
Emerging market currencies stand to benefit most directly from the de-escalation. Currencies in the Middle East and Asia, which had come under pressure during the height of tensions, could see relief rallies. A weaker dollar also reduces the debt service burden for emerging market economies with dollar-denominated liabilities, potentially supporting a broader risk-on shift across asset classes. The MSCI Emerging Market Currency Index, which had declined during the period of heightened tensions, could recoup losses if the ceasefire holds.
The ceasefire deal, if confirmed, would mark a significant de-escalation after months of heightened tensions between Washington and Tehran. The Strait of Hormuz, through which about 21 percent of global oil trade passes, had been a focal point of concern during the conflict. Markets will now focus on the details of the agreement and the timeline for implementation, with the dollar's trajectory likely to remain tied to both geopolitical developments and the Federal Reserve's policy path. The next major catalyst for the dollar will be the upcoming US jobs report, which will shape expectations for the Fed's rate trajectory.
This article is for informational purposes only and does not constitute investment advice.
