7. Exterran Products ( EXLP) sells natural-gas compression services. Exterran swung to a second-quarter loss of $1.4 million, or 7 cents a share, from a profit of $2.7 million, or 13 cents, a year earlier. Revenue advanced 19% to $54 million. The operating margin fell from 24% to 8.2%. Exterran's stock sells for a book value multiple of 2.1, a 17% discount to its oil and gas peer average. It's costly based on forward earnings, sales and cash flow per share. Three analysts rate the stock "buy" and one ranks it "hold." A median target of $28.50 implies 32% upside.

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