The U.S. dollar is back on top – for now

The dollar fell almost 10% through 2025 (ending a 15-year bull cycle) but has rallied since the Iran war and is trading just below 10-month highs; gold has remained largely flat since the conflict began on Feb 28. A spike in oil prices (Brent around $95/bbl) and the U.S.'s crude self-sufficiency have supported dollar demand as oil is dollar-priced. Analysts warn the rally is likely temporary given persistent structural headwinds—large fiscal deficits, political unpredictability under the U.S. administration, and pressure on central bank independence—so dollar strength should hold while the crisis persists but may reverse as tensions normalize.

Analysis

Energy-driven FX flows create short windows where dollar liquidity and sovereign demand re-price risk premia; this disproportionately benefits dollar funding providers (US CP/Treasury markets) and US-listed commodity producers while compressing the FX-hedged returns of foreign exporters. Expect this to show up first in shorter-maturity FX forwards and term premium compression in 2-5y Treasuries as foreign treasury desks and corporates rebuild USD buffers.

The structural counterweight remains US fiscal physics and political risk: over 6-18 months, ongoing deficits and reputational hits to policy credibility will force more aggressive yield compensation or a rollover of foreign reserve allocations away from USD. That makes any current dollar repricing fragile — a mean-reversion trade has asymmetric payoff if a normalization catalyst arrives within 3-9 months.

Operationally, the highest probability P&L drivers are (1) energy producers’ free-cash-flow re-rating if oil realizes a new multi-month premium, and (2) transient demand for USD funding that spikes short-term funding costs (LIBOR/OIS basis) for EM and European corporates. Monitor Brent term structure, FX forward positioning, and foreign holdings of US paper — each will flip the momentum well before spot rates do.

Key Decisions for Investors

• Tactical USD exposure (short-dated): Buy a 3-month EUR put / USD call structure (25-delta puts) size to risk 0.5% portfolio draw — target 3-4% realized move; stop if EUR/USD depreciates <2% adverse or Brent futures drop >10% in 10 days.
• Energy long with convexity: Overweight US upstream (PXD, FANG) for 3-9 months — allocate to names with low leverage and rapid reinvestment optionality; target 20-40% upside if Brent holds a premium, cap downside with 6-9 month protective collars to limit drawdown to ~25%.
• Carry/hedge pair: Long US dollar funding via short-dated Treasury bills financed by short peripheral EUR debt (sell 1-3m EURIBOR swaps) — collect positive carry while hedging FX; unwind if USD term premia compress by >50bps or ECB removes easing bias.
• Convex tail hedge for medium term (6–12 months): Buy a USD index 6–12 month put-spread (e.g., long 6m put / short 12m put lower strike) sized to 0.25–0.5% portfolio cost — asymmetric payoff if policy/fiscal pressures reassert and dollar weakens materially.