What’s Actually Driving the Dollar? A Data Check
With the dollar up sharply again and the commentariat split between “US exceptionalism” and “global dollar shortage,” it’s worth stepping back and checking what the data actually supports.
Factor one: the rate gap (still the main engine)
The US–Germany two-year yield spread remains the single best explanatory variable for EUR/USD, and it has moved relentlessly in the dollar’s favor since spring. Until that gap narrows — through Fed cuts, ECB hikes, or both — the euro has a structural headwind. The gap hasn’t narrowed. Next factor.
Factor two: growth divergence (firmly pro-dollar)
US growth has averaged roughly double the eurozone’s pace over the past year, and the gap is widening, not closing. Purchasing manager surveys, retail sales, industrial production — pick your metric, the pattern holds. Growth differentials feed rate differentials with a lag, which means even a Fed pause wouldn’t immediately help the euro.
Factor three: safe-haven demand (modest but growing)
Geopolitical risk has been elevated for years, and the dollar remains the world’s default refuge. This factor matters most in stress episodes — like the September yen shock, when the dollar fell against the yen but rose against nearly everything else. It’s a tailwind more than a driver.
Factor four: positioning (the risk factor)
Here’s the counterweight. Speculative dollar longs are back near the crowded levels that preceded July’s reversal. Crowded positioning doesn’t reverse trends, but it amplifies drawdowns when surprises hit. A single soft US jobs report could produce a 200-pip air pocket in EUR/USD even within an intact uptrend.
The bottom line
The dollar’s rally is fundamentally earned, not manufactured. But earned rallies still need honest risk management, because the market prices good news instantly and bad news violently. Respect the trend, size for the squeeze, and let the data — not the narrative — change your mind.
Disclaimer: This is market commentary, not investment advice. FX trading carries substantial risk of loss.
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