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It’s said the stock market climbs a proverbial ‘wall of worry,’ with investors fearing that prices can’t possibly go any higher — even as they do.

Indeed, many popular valuation measures now caution investors that the U.S. market is expensive and stretched. But one little-known market predictor tied to gold and platinum suggests that stocks not only will stay strong, but will keep climbing that wall of worry. Read about the gold-platinum ratio, check out why Apple stock is a buy at current levels, and see how blockchain technology could affect exchange-traded funds.

— Jonathan Burton[1]

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