Change may be a part of life, but some success stories are about getting back to basics. That’s the case for Perrigo, a maker of branded and private-label consumer health products.

Perrigo (ticker: PRGO), which has a market capitalization of $5.7 billion, wasn’t always a small-cap stock. At its peak in 2015, the company was worth more than $28 billion, as investors bet that pharmaceutical companies could keep buying competitors and raising prices forever. The reckoning was swift, and Perrigo was caught up in the selling. The…

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