The biggest beneficiary could be ICOS, which doesn't have the diversified product lines of drug giants Pfizer and Lilly.

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But it has a strong balance sheet and diversified product base: 60% of profits come from assembling integrated chips.

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"Lenovo has had a more diversified product portfolio, making low-end and high-end PCs as well as smartphones, and has a deeper pocket to support its immense marketing needs, " Chen said.

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"Companies like IBM that have well diversified product portfolios across global markets have been far better insulated than vendors with specialized offerings, " he says, pointing in particular to the company's IT services business as a bright spot.

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"We have diversified our route network, focused on providing the best product in Upper Class, Premium Economy and Economy, hedged our fuel purchasing and built up a strong cash position, " he added.

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Forum Energy and MRC Global had garnered good investor feedback during their road shows, but Forum was the bigger draw, with a more diversified business of subsea and land-based products and success at new product development.

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Since their product is so prized, gold miners tend to trade at even higher valuations than diversified mining firms.

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