The US Dollar Index (DXY) experienced a sharp decline, falling to one-month lows around 98.60 and dropping nearly 1% on the day, following the announcement of a two-week ceasefire agreement between the United States and Iran. This development has significantly reduced immediate geopolitical risks, prompting traders to unwind long US Dollar positions and contributing to heavy selling pressure on the Greenback [1]. OCBC strategists noted that recent market movements have been almost entirely driven by Iran-related headlines, with oil and yields reacting swiftly to ceasefire news. Overnight trading was marked by volatility as initial fears over inflation and oil supply gave way to optimism on de-escalation, leading to a drop in oil prices and front-end yields, further weakening the USD [2].
The ceasefire has led to a sharp pullback in oil prices, with Brent crude falling below USD100 per barrel, and a rally in S&P 500 futures, reflecting a broader risk-on sentiment in global markets [2]. The easing of oil-driven inflation concerns has revived expectations for Federal Reserve rate cuts, adding further downside pressure on the US Dollar and US Treasury yields [1]. Technical analysis shows the DXY has broken below a key upward-sloping channel and is now testing a confluence of the 50-day, 100-day, and 200-day Simple Moving Averages around the 98.50-98.60 region. A decisive break below this support could accelerate the downtrend, while resistance remains at 99.00 and the 100.00-100.50 zone [1].
Strategists at OCBC suggest that credible signs of de-escalation would likely see the US Dollar continue a shallow depreciation trend, as lower energy risks support non-US economies, risk assets, and cyclical currencies such as AUD, NZD, and SEK. They highlight that FX moves since the Iran conflict began have been shaped by terms-of-trade shifts and broader risk sentiment. In this environment, AUD is favored due to domestic economic tailwinds, and EM carry trades in BRL, MXN, and ZAR are also expected to re-emerge if the truce holds. Conversely, oil-linked currencies like CAD and NOK, as well as safe havens CHF and JPY, may underperform [2].
Momentum indicators for the DXY have also turned negative, with the Relative Strength Index (14) slipping toward the low-40s and the MACD turning negative, suggesting fading upside pressure [1].
CONCLUSION
The US Dollar has come under significant pressure as the US-Iran ceasefire reduces geopolitical risks, leading to lower oil prices and a shift toward risk assets. Market sentiment favors a continued, albeit shallow, depreciation of the USD, with cyclical and emerging market currencies expected to benefit if de-escalation persists. Technical and fundamental signals both point to a challenging near-term outlook for the Greenback.