The US dollar is the world’s primary reserve currency, is the most widely traded currency in the world (making up over 85% of all foreign exchange transactions), and is used as the benchmark currency for pricing many commodities such as oil and gold. We can say that the US dollar is the blood of the current financial system. A few months ago, we shared how to build a really long-term (nearly 100 years long) history of the USD exchange rate. Therefore, as we already have the data, we can now perform the cross-asset analysis to study the impact of the US Dollar’s strength or weakness on the performance of other asset classes, notably US equities, US treasury bonds, and commodities.