Brown Brothers Harriman expects the US Dollar Index (DXY) to trade mainly on rate differentials if risk sentiment has already bottomed on 30 March. It says markets are looking past the IMF’s weaker global growth forecasts and focusing on a recovery narrative.
The bank forecasts DXY will stay rangebound within 96.00–100.00, a band it has held for nearly one year. It expects this range to persist over the next few months.
Rate Differentials Drive Dollar Moves
It notes the energy shock may continue, but suggests the worst period has likely passed. If that holds, DXY would be more driven by interest rate gaps than broad risk moves.
It also points to many scheduled central bank speakers. However, it does not expect fresh policy guidance because the latest policy meetings are still recent.
The article says it was produced with help from an AI tool and reviewed by an editor. It is attributed to the FXStreet Insights Team, described as journalists who select market observations and add in-house and external analysis.
Looking back at the analysis from 2025, we can see the prediction for a range-bound dollar held for a period. The Dollar Index did indeed trade between 96.00 and 100.00 for several months last year as markets focused on a global recovery. However, that environment has clearly shifted as we moved into 2026.
Derivative Positioning For A Stronger Dollar
Today, rate differentials are again the primary driver, but they now suggest sustained dollar strength rather than a range. Stubbornly high US services inflation, with the last CPI print showing core inflation at 3.7%, has pushed the market to price out most of the Federal Reserve rate cuts anticipated for this year. This contrasts sharply with the European Central Bank, which is signaling a potential rate cut as early as June due to weaker economic growth.
For derivative traders, this means strategies that worked last year, such as selling strangles on the DXY, are now much riskier. We should instead consider positioning for a potential breakout to the upside in the dollar index, which is currently hovering around 105. Buying call spreads on the USD index could be an effective way to position for a move towards the 107 level seen in late 2025.
Implied volatility on dollar currency pairs has been rising, reflecting this policy divergence. According to the CME FedWatch Tool, the probability of a Fed rate cut by July has dropped to below 40%, a dramatic repricing from over 80% at the start of the year. This makes selling out-of-the-money puts on the dollar a viable strategy to collect premium while maintaining a bullish bias.
This view is further supported by the significant interest rate gap between the US and other major economies, particularly Japan. Despite the Bank of Japan ending its negative interest rate policy last year, the yield differential remains vast. Therefore, using derivatives to maintain a long USD/JPY position continues to be a core trade for expressing this theme.
