Over long stretches, the stock market is an undeniable wealth creator. But when we look at it over shorter periods, the directional movement of equities becomes a bit of a guessing game.

For instance, 2021 saw the ageless Dow Jones Industrial Average (DJINDICES: ^DJI), broad-based S 500 (SNPINDEX: ^GSPC), and technology-dependent Nasdaq Composite (NASDAQINDEX: ^IXIC) surge to multiple all-time closing highs. In the following year, all three indexes were firmly entrenched in a bear market and produced their worst full-year returns since 2008.

Although there aren't any indicators, metrics, charts, or software that can concretely predict the directional movement of equities, there are certain indicators, metrics, and charts that have an undeniably strong track record of making these calls. One such chart, with more than 123 years of history to back it up, implies that a widely owned commodity might be on the verge of rocketing higher.

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Source Fool.com