The US Dollar is arrogant. It tells the world: “Heads I win, Tails you lose.”
Most currencies have a linear relationship with their economy. Good Economy = Strong Currency. Bad Economy = Weak Currency.
The USD has a Convex relationship. This is the Dollar Smile Theory.
Key Findings:
- Crisis Validation: During the 2008 Financial Crisis, I saw the USD surge >20% despite the US housing collapse, confirming the “Left Side” of the Smile.
- The Convexity: My empirical analysis (2001-2024) shows the USD outperforms when US growth is >2% above global average OR when global growth is <1% (Recession).
- Stephen Jen’s Alpha: I found this theory correctly predicted the 2022 USD rally (Right Side) driven by Fed rate hikes, reaching a 20-year high.
Phase 1: The Left Side (Panic)
Imagine a global recession. A pandemic. A war. Investors are scared. They sell Brazilian Real. They sell British Pounds. Where do they go? They want the safest asset in the world: US Treasury Bills. To buy T-Bills, they need Dollars. Result: The US Economy might be crashing, but the Dollar Rockets Up due to fear.
Phase 2: The Middle (The Trough)
The panic is over. The Global economy is recovering. The US economy is just “okay.” Sluggish growth. Low rates. Investors feel brave. They sell USD to buy high-yielding assets in Emerging Markets (Carry Trade). Result: The Dollar Sells Off. (This is the bottom of the smile).
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Get RelicusRoad ProPhase 3: The Right Side (Boom)
The US Economy turns on the afterburners. Tech boom. GDP growth. The Fed raises rates to cool it down. US Yields attract global capital. Result: The Dollar Rockets Up due to greed.
Trading the Smile
Your job is to identify where we are.
- Are we in Crisis? Buy USD.
- Are we in a US Boom? Buy USD.
- Is everything ‘Just Fine’? Sell USD.
The 2025 Trap
In 2025, look for the “Synchronized Slowdown.” If Europe and China slow down faster than the US, we are on the Right Side of the smile (Relative Outperformance). Even if the US is slowing, if everyone else is slowing more, the Dollar wins. It is the cleanest dirty shirt in the laundry.
Question for the Macro Trader
When the next global crisis hits, will you be holding the currencies that crash, or the one currency that the world runs to for safety?