The US Dollar Index (DXY) fell for a second session and traded near 97.50 in Asian hours on Monday. The move followed uncertainty over US trade policy and weaker economic data.
The US Supreme Court struck down most of President Donald Trump’s emergency tariff authority. Trump said he would pursue a 15% global import tariff, up from 10%, using other trade laws.
Dollar Pressures From Data And Policy
US data also weighed on the dollar. The economy grew 1.4% in Q4 2025, while core PCE inflation rose 3.0% year on year in December.
Geopolitics added to market caution. The New York Times reported Trump was weighing limited airstrikes on Iran, with a wider attack considered if earlier steps fail.
The US Dollar is the official US currency and is used in some other countries. It accounts for over 88% of global foreign exchange turnover, or about $6.6 trillion in daily transactions, based on 2022 data.
Federal Reserve policy affects the dollar mainly through interest rates. The Fed targets 2% inflation and can use quantitative easing, which tends to weaken the dollar, or quantitative tightening, which tends to support it.
Trading Implications For Currency Markets
Given the US Dollar Index’s fall to 97.50, we see the market reacting to a difficult mix of slowing growth and high inflation. The Q4 2025 GDP figure of 1.4% alongside a 3.0% core PCE reading puts the Federal Reserve in a bind, making future policy moves highly unpredictable. This uncertainty suggests that simply shorting the dollar may be too risky due to potential safe-haven bids.
The combination of trade policy confusion and geopolitical risk is a classic recipe for higher market volatility. We can look back to periods like the 2019 trade disputes, when currency volatility gauges saw spikes of over 20% in short periods. Therefore, traders should consider buying options strategies like straddles or strangles on major pairs like EUR/USD, which profit from large price swings in either direction.
For those with existing long-dollar positions, the threat of a new 15% global tariff introduces significant downside risk. It would be wise to purchase put options on the US Dollar Index or related currency futures as a direct hedge. This acts as insurance against further policy-driven dollar weakness in the coming weeks.
We are also closely watching the USD/JPY pair, as the yen often acts as a primary safe-haven currency during periods of US-centric uncertainty. The current situation could strengthen the yen more than the dollar, pushing the USD/JPY pair lower. Options that bet on a fall in this pair could provide a valuable position against escalating global tensions.
The reports concerning potential US airstrikes on Iran add another layer of risk, particularly for energy markets. We have historically seen WTI crude prices jump by over 10% in a matter of days on similar Mideast tensions. Traders should monitor volatility in oil options, as a spike in energy prices would further complicate the global inflation and growth outlook.
