The inverse relationship between the strength of the U.S. dollar and the price of commodities has held good over time.
That relationship isn’t a constant, of course. Political, economic or supply-demand fundamentals can trump dollar strength at times of stress. However, as a broad measure, it can impact prices day to day, week to week and year to year.
While stock prices are currently at all-time highs, commodity prices are as cheap today as they pretty much have been for decades — not historic lows, but relatively speaking commodities have not enjoyed the same boost from cheap money and asset-boosting policies like quantitative easing that stock prices have seen.